Particle Consistency of Microscopic and Macroscopic Motion

Size: px
Start display at page:

Download "Particle Consistency of Microscopic and Macroscopic Motion"

Transcription

1 Particle Consistency of Microscopic and Macroscopic Motion Yongfeng Yang Bureau of Water Resources of Shandong Province, Jinan, Shandong Province, China, Mailing address: Shandong Water Resources Department, No. 127 Lishan Road, Jinan, Shandong Province, China, Tel. and fax: Abstract The scenario of particle has been greatly written in the past, but its incompleteness is so serious that the connection of microscopic and macroscopic world is broken. The 19 th century s experiment by both Perrin and Thomson is unable to prove whether the cathode rays are negatively charged or not. Here we propose, the particles of an atom are organized in a series of hierarchical two-body systems to orbit, wave-like movement demonstrated in double-slit experiment is nothing but an aggregation of the movement of many fine particles. Along with previous work, it is hopeful to see that hierarchical two-body gravitation may unify different level structures and their motion together. 1 Introduction Some conceptions of microscopic particles had been founded in the past. For instance, electron is negatively charged and proton is positively charged, and the number of electron and proton of an atom is equal, the atom is neutral. There are four kinds of interactions: electromagnetic force, weak force, strong force, and gravity force, the electrons and protons of an atom are attracted with electromagnetic force, and the electrons in one atom are also attracted to the protons in another with electromagnetic force, strong force binds all the protons (including quarks) of an atom together, weak force is responsible for the decay of massive quarks and leptons into lighter quarks and leptons, gravity force is weak and relevant at large distance. But not all of these conceptions are complete or reliable in both theory and experiment. Question 1 A celestial object may be treated as a large aggregation of countless atoms (this point is presently certain), and in its body each atom is adjacent to other atoms. If the electrons in one atom are attracting the protons in another with electromagnetic force, all the atoms of a celestial object may attract each other to fix together, it is unnecessary to introduce gravity force to bind all the materials (aggregation of atoms) of that celestial object together. But experience tells us that it appears to be gravity force rather than other force to bind all the materials together. On the other hand, if the electromagnetic force between the electrons of one atom and the protons of another atom is existed, the electrons in motion can repeatedly approach and depart from the protons of another atom, this is a motion in variable electromagnetic field, the conversion of kinetic energy and potential energy and its consumption will lead to an instability of the two atoms. Question 2 C. F. du Fay in 1733 showed a two-fluid theory of vitreous and resinous electricity, but in 1839 Michael Faraday showed the division of static electricity, current electricity, and bioelectricity was only a consequence of 1

2 the behavior of a single kind of electricity appearing in opposite polarities. It is completely arbitrary which polarity is called positive and which is called negative. It is Benjamin Franklin who later posited that when matter contained too little of the fluid it was "negatively" charged, and when it had an excess it was "positively" charged, and further identified the term "positive" with vitreous electricity and "negative" with resinous electricity. It may conclude that the arbitrary term positive and negative charge has no any real physical meaning. So, there is no reason to conclude that the mutual interaction between negatively charged electrons and positively charged protons in an atom may get the atom become electrically neutral. On the other hand, proton is proved to be composed of smaller elementary particles, and electron is also one of many elementary particles, it is very difficult to imagine why the magnitude of electric charge hold by electron and proton is always equal when these elementary particles are organized to form an atom. No physical reason may be found to approve this property of equality. Question 3 Also the most importantly, it is uncertain that the particles of the cathode rays are negatively electrified. In 1897, Thomson made the experiment of cathode rays as shown in Figure 1. The rays from the cathode C pass through a first slit in the anode A and a second slit in another earth-connected metal plug B, subsequently, they then travel between two parallel aluminium plates (about 5 cm. long by 2 broad and at a distance of 1.5 cm. apart); they then fall on the end of the tube and produce a narrow well-defined phosphorescent patch. The rays were deflected when the two aluminium plates were connected with the terminals of a battery of small storage cells; the rays were depressed when the upper plate was connected with the negative pole of the battery, the lower with the positive, and raised when the upper plate was connected with the positive, the lower with the negative pole. Based on these observations, Thomson concluded that the corpuscles --particles are negatively charged. Figure 1: Model of Thomson s experiment of cathode rays. The particles of cathode rays are emitted from the cathode C to pass two slits A and B subsequently, and then pass through an electrostatic field D and E, by which the particles of cathode rays is deflexed. It appears to be difficult to disprove the result of the experiment, but it does not mean that the experiment is complete. The experiment of electricity through metal conductor shows that the moving electrons create current, and the electrons move from the cathode of an electric source to the anode. This further indicates that the electrons have trend to escape from the anode of an electric source under the effect of potential difference. Once the anode and cathode of an electric source is connected with a metal wire, the electrons will immediately move along the wire. In Thomson s experiment, some electrons might have moved from the battery to the plate connected at the cathode and then escaped from the plate. The ejected electrons could collide with the passing cathode rays and thereby arouse them to deflex. We here have to pay more attention to the details of Thomson s experiment. Thomson employed a battery of small storage cells whose potential difference is low, the two plates are near that is 2

3 apart at a distance of 1.5 cm, the aluminium plate is about 5 cm. long by 2 broad. These conditions determine if some electrons (or other fine particles) are emitted from the plate connected with the cathode, the electron density per unit area from the plate (relative to the dense cathode rays) is too less to arouse experimenter to note that these electrons are passing between the two plates. The direction of current is generally thought to be run from the anode of an electric source to the cathode, but inversely, the movement of electrons is proved to be from the cathode to the anode. It is possible that the direction of electron movement and current is thought by Thomson to be identical, and may thus mislead his experimental result. In fact, Thomson s experiment is to reinforce the view of Jean Perrin that the cathode rays are charged with negative electricity. Perrin in 1895 had made the experiment of cathode rays as shown in Figure 2. The particles of cathode rays (marked with orange lines) are emitted from the cathode N to pass two openings β and α subsequently, and then enter the inner Faraday s cylinder. The electroscope connected with the cylinder then indicates negative electricity. However, this experiment cannot prove that the cathode rays are negatively charged. The Faraday cylinder Perrin employed is metal material, and it is well established that there are free electrons in metal material, so when the particles of cathode rays are emitted from the cathode to enter the Faraday s cylinder, they can inevitably bombard the free electrons of the Faraday's cylinder to move, the moving electrons may form current and therefore be detected by the electroscope connected with the cylinder. Because the movement of electrons is reverse to the direction of current, the electroscope in Perrin s experiment may therefore indicate negative electricity. Today this evidence virtually does not need to argue too much, photoelectric effect had shown that the photons of a beam of light can bombard a metal s surface to release electrons. This means very small particles may bombard the free electrons of a metal to move. It is necessary to remind that in both Perrin and Thomson s experiment they used magnetic field to deflex the cathode rays, this phenomenon of deflexion may be explained as a consequence of magnetic particle colliding the cathode rays. Figure 2: Model of Perrin s experiment of cathode rays. The vacuum tube is represented by A B C D, which plays the part of a Faraday's cylinder. A metal thread soldered at S connects this cylinder with an electroscope. E F G H is a second cylinder in permanent communication with the earth. The proposed electrons (marked with green dots) are being bombarded to move. 2 Proposition How do the particles of an atom move in space? The term spin is nothing but an arbitrary description of the movement of these particles. So far, nobody has in person seen an actual motion of electron around the nucleus of an atom, the veil of atom is still deeply covered. If electron is proved to be neutral, as atom is observed to be neutral, proton must be neutral, the strong force between protons must be inexistent, the electromagnetic force between the electrons and protons of an atom must be inexistent, the electromagnetic force between the electrons of an atom and the protons of another atom must be inexistent, etc. Experiment has proven that proton is divisible and composed of smaller elementary particles, and many other elementary particles had also been discovered. All 3

4 these aspects inspire one to think what is responsible for the association of these particles and their motion. In another previous paper, I have theoretically formulated that all particles due to random perturbation continue to capture each other with gravitation to form larger hierarchical two-body systems like planet, star, galaxy, cluster, and etc. [1]. Here I further specify this process in microscopic scale. Due to random perturbation from another unknown matter, the elementary particles in motion have chance to approach each other. Once the distance of the two particles is near enough, gravity fixes them together to form a two-body system. Due to the distribution of elementary particles are extensive in space, many two-body systems of particles are formed at the same time. Due to random perturbation, these two-body systems of particles and individual particles continue to approach each other and further capture to form superior two-body systems of particles. The superior two-body systems of particles and individual particles continue to approach each other and further capture to form very superior two-body systems of particles. We assume these very superior two-body systems of particles to be atoms. Subsequently, atoms and particles due to random perturbation continue to capture each other to form individual celestial objects, and then these celestial objects continue to capture each other to form planetary systems, stellar systems, etc. (Fig.3). Figure 3: Model of association of elementary particles. In atom the color dots denote elementary particles and their associations. Arrows denote the motional directions of each component, black dots denote the barycenter of related two-body systems, while black lines denote gravitation between the components of these two-body systems. As all the particles are organized together through a pattern of one to one, a series of hierarchical two-body systems are determined for the particles of an atom. Due to the pattern of one to one, light element is firstly formed from elementary particles, and then light elements and individual particles further capture each other to form heavier elements. Under the effect of gravitation, the two components of each two-body system are approaching increasingly. A successive hierarchical two-body approach leads the particles of an atom to further aggregate, a nucleus may be formed at a central region of the atom. In atom, each particle is orbiting around the barycenter of a two-body system, and at the same time the two-body system itself is orbiting around the barycenter of a superior two-body system. As the nucleus of an atom is massive, the barycenters of related two-body systems are determined to be close to the nucleus, the outer particles therefore look like orbiting around the nucleus, which is 4

5 similar to the solar system that the planets look like orbiting around the Sun. The approach of particles may lead to collide, the collision of particles may thus lead heavier element to radiate rays and become decay. 3 A particle s explanation of double-slit experiment The most famous experiment to prove the property of particle to be wave is double-slit interference experiment. But this wave is essentially an aggregation of the movement of many fine particles. As shown in Figure 4, we at first assumed that particle emission from a source is by group and the time interval of two adjacent groups is too less to be distinguished by established technique. Let all the groups of particles pass through slit a in board S 1 subsequently. Theoretically speaking, the width of slit is far larger than the size of individual particle. After the slit, the first group of particles due to a compression with the slit and themselves will immediately release into a large space and thereby spread out forward, the second, third, fourth, etc. groups of particles will subsequently release and spread out forward. The spread of particles is like a sphere-layer pattern. And then, the first group of particles reach board S 2 where there are two slits b and c. Some of the particles are again compressed to pass through the two slits. After the two slits, the two subordinate groups of particles will again release into large space and spread out forward. The following subordinate groups of particles from later groups will subsequently release and spread out forward. In motion, a subordinate group of particles from one slit will geometrically intersect with other subordinate groups of particles from another slit. For instance, subordinate group b 1 from slit b can intersect with group c 1, c 2, etc. from slit c. Now if we set a screen (F) in the front of their travel, the intersections of the subordinate groups of particles will automatically fall on the screen. An intersection of particles means there are more particles in the intersection region than other non-intersection region. So, when all the intersections fall on the screen, a series of patches of particles may be formed. If the particles we employ here are photons, the experiment of double-slit interference may finally be explained as a consequence of the aggregating movement of fine particles. Figure 4: A particle s explanation of double-slit interference experiment. K 1 (K 2 ) denotes the intersection of two subordinate groups of particles where there are more particles than other region. 5

6 4 Discussion Thomson employed an electrostatic field to deflex the cathode rays, but we should mind a fact that the electrostatic field is determined by an electric source, and that the two polarities (anode and cathode) of the electric source are being connected with two plates to create the electrostatic field. As electrons always move from the cathode of an electric source to the anode, this means that some kind of matter is passing between the two plates to create the electrostatic field. It may infer that this kind of matter is either electrons or other fine particles that are bombarded by electrons to eject from the plate. If someone attempts to prove the cathode rays to be negatively charged, he should use a plate coated with the so-called positive charge to approach the cathode rays to see whether the rays can be deflexed. Ernest Rutherford in 1910 used Helium nuclei to bombard a piece of gold foil to show that the majority of an atom s body is empty, except for a small but dense nucleus at the center. This further means that there is huge void between any two adjacent atoms. In a galaxy, there is also large void between any two adjacent stellar systems (stars), but the mass of each stellar system is mainly focused at a small central region. Stellar system is composed of many small components like star, planet, and satellite, and atom is also composed of many small components like electron, proton, and neutron. This semblable property requires us to think that they are likely to derive from the same physical reason. If proposition above is reliable, the atomic solar system s model is still available. Like the solar system, the shape of atom should be flat. Some people are trying to unify theory of relativity and quantum mechanics to form a final paradigm, but it is difficult to see a hope if they rely on these established but still incomplete stories. Evidently, clusters of galaxies is an aggregation of galaxies, galaxy is an aggregation of stellar systems, stellar system is an aggregation of a star and planetary systems, planetary system is an aggregation of a planet and satellites, star, planet, and satellite are respectively an aggregation of atoms, and atom is an aggregation of elementary particles, the components of each level are in motion at the same time. Any attempt that neglects this hierarchy of matter and motion to unify microscopic and macroscopic world is impossible to be successful. If elementary particles are the bricks, a hierarchical two-body capture is the best way to build these bricks to form large structures, and then all the structures are inevitably organized in a series of hierarchical two-body systems to orbit. As force is the reason of motion and motion is the result of force, this naturally requires a hierarchical two-body gravitation to fit to these structures and their movements. Not all visible matter have the characteristic of electromagnetism, but all invisible matter may be thought to be with mass, this means that all visible matter may be ruled by a commonly physical mechanism, therefore it is feasible to treat electromagnetism as a special property of some kind of matter. And then, all visible matter and their motion may be written into a final frame of gravitation. Reference: [1] Yang, Y. F., Motions of Observable Structures Ruled by Hierarchical Two-Body Gravitation in the Universe. Proceedings of the 18th annual conference of the NPA, College Park, Maryland University, USA, Vol.8: (2011). 6

Particle Consistency of Microscopic and Macroscopic Motion

Particle Consistency of Microscopic and Macroscopic Motion Particle Consistency of Microscopic and Macroscopic Motion Yongfeng Yang Bureau of Water Resources of Shandong Province, Jinan, Shandong Province, China, Mailing address: Shandong Water Resources Department,

More information

Particle Consistency of Microscopic and Macroscopic Motion

Particle Consistency of Microscopic and Macroscopic Motion Particle Consistency of Microscopic and Macroscopic Motion Yongfeng Yang Bureau of Water Resources of Shandong Province, Jinan, Shandong Province, China, Mailing address: Shandong Water Resources Department,

More information

Supernova from the smashing collision of a binary star

Supernova from the smashing collision of a binary star Supernova from the smashing collision of a binary star Yongfeng Yang Bureau of Water Resources of Shandong Province, Jinan, Shandong Province, China, Mailing address: Shandong Water Resources Department,

More information

Physics 30 Modern Physics Unit: Atomic Basics

Physics 30 Modern Physics Unit: Atomic Basics Physics 30 Modern Physics Unit: Atomic Basics Models of the Atom The Greeks believed that if you kept dividing matter into smaller and smaller pieces, you would eventually come to a bit of matter that

More information

The Structure of the Atom

The Structure of the Atom Main Ideas Atoms contain positive and negative particles. Atoms have small, dense, positively-charged nuclei. A nucleus contains protons and neutrons. The radii of atoms are expressed in picometers. FIGURE

More information

Accelerated Chemistry Study Guide Atomic Structure, Chapter 3

Accelerated Chemistry Study Guide Atomic Structure, Chapter 3 Accelerated Chemistry Study Guide Atomic Structure, Chapter 3 Terms and definitions atom ion law of constant composition isotope atomic theory of matter mass number cathode ray tube atomic mass electron

More information

1 The Development of Atomic Theory

1 The Development of Atomic Theory CHAPTER 4 1 The Development of Atomic Theory SECTION Atoms KEY IDEAS As you read this section, keep these questions in mind: What scientists helped to develop atomic theory? What part of atoms did Thomson

More information

1. What is the minimum energy required to excite a mercury atom initially in the ground state? ev ev ev

1. What is the minimum energy required to excite a mercury atom initially in the ground state? ev ev ev Page 1 of 10 modern bank Name 25-MAY-05 1. What is the minimum energy required to excite a mercury atom initially in the ground state? 1. 4.64 ev 3. 10.20 ev 2. 5.74 ev 4. 10.38 ev 2. The diagram represents

More information

Atoms are not the smallest thing. Growing evidence for the divisibility of the indivisible

Atoms are not the smallest thing. Growing evidence for the divisibility of the indivisible Atoms are not the smallest thing Growing evidence for the divisibility of the indivisible Learning Objectives Describe the three particles in the atom Define atomic number and mass number Describe isotopes

More information

Physics HW Set 3 Spring 2015

Physics HW Set 3 Spring 2015 1) If the Sun were replaced by a one solar mass black hole 1) A) life here would be unchanged. B) we would still orbit it in a period of one year. C) all terrestrial planets would fall in immediately.

More information

1. Based on Dalton s evidence, circle the drawing that demonstrates Dalton s model.

1. Based on Dalton s evidence, circle the drawing that demonstrates Dalton s model. Various models of the ATOM Dalton Model John Dalton developed the first atomic model in 1808. Before him people, mostly philosophers, had speculated about the smallest unit of matter and two theories prevailed.

More information

PSI AP Physics How was it determined that cathode rays possessed a negative charge?

PSI AP Physics How was it determined that cathode rays possessed a negative charge? PSI AP Physics 2 Name Chapter Questions 1. How was it determined that cathode rays possessed a negative charge? 2. J. J. Thomson found that cathode rays were really particles, which were subsequently named

More information

4.2 Structure of the Nuclear Atom > Chapter 4 Atomic Structure. 4.2 Structure of the Nuclear Atom. 4.1 Defining the Atom

4.2 Structure of the Nuclear Atom > Chapter 4 Atomic Structure. 4.2 Structure of the Nuclear Atom. 4.1 Defining the Atom Chapter 4 Atomic Structure 4.1 Defining the Atom 4.2 Structure of the Nuclear Atom 4.3 Distinguishing Among Atoms 1 CHEMISTRY & YOU How did scientists determine the structures that are inside an atom?

More information

Professor K. Atomic structure

Professor K. Atomic structure Professor K Atomic structure Review Reaction- the formation and breaking of chemical bonds Bond- a transfer or sharing of electrons Electrons Abbreviated e - What are they? How were they discovered? Early

More information

Abstract: Here, I use the basic principles of the McMahon field theory to explain the strong force and the weak force, as described for atoms.

Abstract: Here, I use the basic principles of the McMahon field theory to explain the strong force and the weak force, as described for atoms. Copyright Version: 2 nd March, 2015, updated 10 th April, 2015 Page: 1 of 8 The Strong and weak forces- explained via McMahon field theory Abstract: Here, I use the basic principles of the McMahon field

More information

Dalton Thompson Rutherford Bohr Modern Model ("Wave. Models of the Atom

Dalton Thompson Rutherford Bohr Modern Model (Wave. Models of the Atom Dalton Thompson Rutherford Bohr Modern Model ("Wave Models of the Atom Mechanical" Model) Aim: To discuss the scientists and their contributions to the current atomic model. Focus: Rutherford's Gold Foil

More information

Atomic Structure. History of Atomic Theory

Atomic Structure. History of Atomic Theory Atomic Structure History of Atomic Theory Democritus (460-370 BC) Was the to come up with the idea of atom Believed that all matter was composed of Which is derived from the Greek word Atomos meaning He

More information

Greek Philosophers (cont.)

Greek Philosophers (cont.) Greek Philosophers (cont.) Many ancient scholars believed matter was composed of such things as earth, water, air, and fire. Many believed matter could be endlessly divided into smaller and smaller pieces.

More information

HISTORY OF THE ATOM ATOMA

HISTORY OF THE ATOM ATOMA S.MORRIS 2006 HISTORY OF THE ATOM 460 BC Democritus develops the idea of atoms he pounded up materials in his pestle and mortar until he had reduced them to smaller and smaller particles which he called

More information

Atomic Theory Timeline

Atomic Theory Timeline Atomic Theory Timeline Democritus 450 B.C. Democritus was a Greek philosopher who came to the conclusion that everything was made up of tiny particles. He used the term atomos. Unfortunately, since Democritus

More information

Chapter 4 Lesson 2 Notes

Chapter 4 Lesson 2 Notes Chapter 4 Lesson 2 Notes How were electrons discovered? Scientists have put together a detailed model of atoms and their parts. Here is the journey of atom parts. How were electrons discovered? (cont.)

More information

Quantum Physics and Atomic Models Chapter Questions. 1. How was it determined that cathode rays possessed a negative charge?

Quantum Physics and Atomic Models Chapter Questions. 1. How was it determined that cathode rays possessed a negative charge? Quantum Physics and Atomic Models Chapter Questions 1. How was it determined that cathode rays possessed a negative charge? 2. J. J. Thomson found that cathode rays were really particles, which were subsequently

More information

VISUAL PHYSICS ONLINE EARLY MODELS OF THE ATOM

VISUAL PHYSICS ONLINE EARLY MODELS OF THE ATOM VISUAL PHYSICS ONLINE EARLY MODELS OF THE ATOM The atom was believed to be smallest building block of matter and an indivisible unit, until the late 19 th century. There was no direct evidence that atoms

More information

Atomic Theory. Developing the Nuclear Model of the Atom. Saturday, January 20, 18

Atomic Theory. Developing the Nuclear Model of the Atom. Saturday, January 20, 18 Atomic Theory Developing the Nuclear Model of the Atom Democritus Theory: Atom, the indivisible particle c. 300 BC Democritus Problem: No scientific evidence c. 300 BC Dalton Theory: The solid sphere model

More information

Modern Physics, Waves, Electricity

Modern Physics, Waves, Electricity Name: Date: 1. Metal sphere has a charge of +12 elementary charges and identical sphere has a charge of +16 elementary charges. fter the two spheres are brought into contact, the charge on sphere is 4.

More information

Updating the Atomic Theory

Updating the Atomic Theory Updating the Atomic Theory On the basis of Dalton s Atomic Theory: An atom is the basic unit of an element that can enter into chemical combination. Three major differences between modern atomic theory

More information

Democritus thought atoms were indivisible & indestructible Lacked experimental support 4 th century B.C.

Democritus thought atoms were indivisible & indestructible Lacked experimental support 4 th century B.C. Chapter 5 Democritus thought atoms were indivisible & indestructible Lacked experimental support 4 th century B.C. Democritus thought atoms were indivisible & indestructible Lacked experimental support

More information

Section 3.1 Substances Are Made of Atoms

Section 3.1 Substances Are Made of Atoms Section 3.1 Substances Are Made of Atoms Objectives: 1. State the three laws that support the existence of atoms. 2. List the five principles of John Dalton s atomic theory. Vocabulary: law of definite

More information

13.1 Fundamental Particles and Forces

13.1 Fundamental Particles and Forces 13.1 Fundamental Particles and Forces Scientists once believed atoms were the smallest particles of matter. With the advancement of technology, it became clear that atoms themselves are made of simpler

More information

Lecture 32 April

Lecture 32 April Lecture 32 April 08. 2016. Hydrogen Discharge Tube and Emission of Discrete Wavelengths Description of the discrete Hydrogen Emission Spectrum by the Balmer (1884) Rydberg Ritz formula (1908) Cathode Ray

More information

Honors Ch3 and Ch4. Atomic History and the Atom

Honors Ch3 and Ch4. Atomic History and the Atom Honors Ch3 and Ch4 Atomic History and the Atom Ch. 3.1 The Atom is Defined 400 B.C. the Greek philosopher Democritus said that the world was made of two things: Empty space and tiny particles called atoms

More information

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms Chemistry Ms. Ye Name Date Block The Evolution of the Atomic Model Since atoms are too small to see even with a very powerful microscope, scientists rely upon indirect evidence and models to help them

More information

Atomic Structure-Notes

Atomic Structure-Notes Subatomic Particles Electron, proton and neutron Atomic Structure-Notes Discovery of Electron (Michael Faraday s Cathode Ray Discharge Tube Experiment) Experimental Setup: Glass tube is partially evacuated

More information

Cumulative Review 1 Use the following information to answer the next two questions.

Cumulative Review 1 Use the following information to answer the next two questions. Cumulative Review 1 Use the following information to answer the next two questions. 1. At what distance from the mirror is the image located? a. 0.10 m b. 0.20 m c. 0.30 m d. 0.40 m 2. At what distance

More information

Particles and Waves Final Revision Exam Questions Part 1

Particles and Waves Final Revision Exam Questions Part 1 Particles and Waves Final Revision Exam Questions Part 1 Cover image: cutaway diagram of CERN, CERN Version 2013 P&W: Exam Questions Part 1 Version 2013 Contents Section 1: The Standard Model 1 Section

More information

Atom s Structure. Chemistry is the study of the structure, characteristics and behavior of matter. The basic

Atom s Structure. Chemistry is the study of the structure, characteristics and behavior of matter. The basic AlMarzooqi 1 Hamad AlMarzooqi Professor Kafle ESL 015 26 February 2013 Atom s Structure Chemistry is the study of the structure, characteristics and behavior of matter. The basic unit of matter is an atom,

More information

Make sure this is handed in!

Make sure this is handed in! Make sure this is handed in! Based on the 3 groups in early atomic history, pick one of the groups and explain how they progressed the current knowledge of atoms and elements at their time. OR Explain

More information

Topic III Quest Study Guide

Topic III Quest Study Guide Topic III Quest Study Guide A. Early Concepts: Democritus: Democritus: Greek Philosopher 400 B.C. Matter is composed of atoms, which move through empty space Atoms are solid, homogeneous indestructible

More information

Hot Sync. Materials Needed Today

Hot Sync. Materials Needed Today Chapter 4 Lesson 2 Materials Needed Today Please take these materials out of your backpack. Pencil Blank sheet of paper for notes. Hot Sync Friday 1/10/14 Answer the following questions in complete sentences

More information

CHEMISTRY. Matter and Change. Table Of Contents. Section 4.1 Early Ideas About Matter. Unstable Nuclei and Radioactive Decay

CHEMISTRY. Matter and Change. Table Of Contents. Section 4.1 Early Ideas About Matter. Unstable Nuclei and Radioactive Decay CHEMISTRY 4 Table Of Contents Matter and Change Section 4.1 Early Ideas About Matter Chapter 4: The Structure of the Atom Section 4.2 Section 4.3 Section 4.4 Defining the Atom How Atoms Differ Unstable

More information

Chapter Six: X-Rays. 6.1 Discovery of X-rays

Chapter Six: X-Rays. 6.1 Discovery of X-rays Chapter Six: X-Rays 6.1 Discovery of X-rays In late 1895, a German physicist, W. C. Roentgen was working with a cathode ray tube in his laboratory. He was working with tubes similar to our fluorescent

More information

Atomic theory. Atoms: The Building Blocks of Matter

Atomic theory. Atoms: The Building Blocks of Matter Atomic theory Atoms: The Building Blocks of Matter First, there was Democritus Democritus was a Greek philosopher atomos He came up with the idea of the atom around 400BCE He had no evidence, he just thought

More information

Lecture 6: The Physics of Light, Part 1. Astronomy 111 Wednesday September 13, 2017

Lecture 6: The Physics of Light, Part 1. Astronomy 111 Wednesday September 13, 2017 Lecture 6: The Physics of Light, Part 1 Astronomy 111 Wednesday September 13, 2017 Reminders Star party tonight! Homework #3 due Monday Exam #1 Monday, September 25 The nature of light Look, but don t

More information

CfE Higher Physics. Particles and Waves

CfE Higher Physics. Particles and Waves Wallace Hall Academy CfE Higher Physics Particles and Waves Exam Questions Part 1 Cover image: cutaway diagram of CERN, CERN P&W: Exam Questions Part 1 Version 2013 Contents Section 1: The Standard Model

More information

UNIT 4 NOTES: ATOMIC THEORY & STRUCTURE

UNIT 4 NOTES: ATOMIC THEORY & STRUCTURE S T U D E N T N O T E S P r e - A P C h e m i s t r y U N I T 4 Page 1 NAME PERIOD UNIT 4 NOTES: ATOMIC THEORY & STRUCTURE STUDENT OBJECTIVES: Your fascinating teachers would like you amazing learners

More information

Assessment Schedule 2011 Physics: Demonstrate understanding of atoms and radioactivity (90256)

Assessment Schedule 2011 Physics: Demonstrate understanding of atoms and radioactivity (90256) NCEA Level 2 Physics (90256) 2011 page 1 of 5 Assessment Schedule 2011 Physics: Demonstrate understanding of atoms and radioactivity (90256) Evidence Statement Q Evidence Achievement Merit Excellence ONE

More information

What is the current atomic model?

What is the current atomic model? 4.1 Atoms Basic Units of Matter What is the current atomic model? Matter is anything that has mass and takes up space, such as gases, solids, and liquids. Matter is not sound, heat, or light these are

More information

ASTR 200 : Lecture 21. Stellar mass Black Holes

ASTR 200 : Lecture 21. Stellar mass Black Holes 1 ASTR 200 : Lecture 21 Stellar mass Black Holes High-mass core collapse Just as there is an upper limit to the mass of a white dwarf (the Chandrasekhar limit), there is an upper limit to the mass of a

More information

1 The Cathode Rays experiment is associated. with: Millikan A B. Thomson. Townsend. Plank Compton

1 The Cathode Rays experiment is associated. with: Millikan A B. Thomson. Townsend. Plank Compton 1 The Cathode Rays experiment is associated with: A B C D E Millikan Thomson Townsend Plank Compton 1 2 The electron charge was measured the first time in: A B C D E Cathode ray experiment Photoelectric

More information

ESSENTIAL QUANTUM PHYSICS PETER LANDSHOFF. University of Cambridge ALLEN METHERELL. University of Central Florida GARETH REES. University of Cambridge

ESSENTIAL QUANTUM PHYSICS PETER LANDSHOFF. University of Cambridge ALLEN METHERELL. University of Central Florida GARETH REES. University of Cambridge ESSENTIAL QUANTUM PHYSICS PETER LANDSHOFF University of Cambridge ALLEN METHERELL University of Central Florida GARETH REES University of Cambridge CAMBRIDGE UNIVERSITY PRESS Constants of quantum physics

More information

Chapter 11 Study Questions Name: Class:

Chapter 11 Study Questions Name: Class: Chapter 11 Study Questions Name: Class: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. The discovery of which particle proved that the atom

More information

PHYS 340 ( From Atoms to the Universe ): SECTION A

PHYS 340 ( From Atoms to the Universe ): SECTION A PHYS 340 ( From Atoms to the Universe ): (Tuesday, April 26th, 2011) 12.00-2.30 pm, Room Hennings 301 FINAL EXAM This exam will last 2 hrs and 30 mins. The only material allowed into the exam will be pens,

More information

Alchemy Unit Investigation III. Lesson 7: Life on the Edge

Alchemy Unit Investigation III. Lesson 7: Life on the Edge Alchemy Unit Investigation III Lesson 7: Life on the Edge The Big Question How does the atomic structure of atoms account for the trends in periodicity of the elements? You will be able to: Explain how

More information

The Nature of Matter Textbook Inside the Atom. 1) Explain how scientists discovered particles of an atom.

The Nature of Matter Textbook Inside the Atom. 1) Explain how scientists discovered particles of an atom. Models of the Atom The Nature of Matter Textbook Inside the Atom 1) Explain how scientists discovered particles of an atom. 2) Explain how today's model of the atom was developed. 3) Describe the structure

More information

Visit for more fantastic resources. OCR. A Level. A Level Physics. Particle physics (Answers) Name: Total Marks: /30

Visit   for more fantastic resources. OCR. A Level. A Level Physics. Particle physics (Answers) Name: Total Marks: /30 Visit http://www.mathsmadeeasy.co.uk/ for more fantastic resources. OCR A Level A Level Physics Particle physics (Answers) Name: Total Marks: /30 Maths Made Easy Complete Tuition Ltd 2017 1. In 1911 the

More information

Get out your diagram from your research paper. Get out a sheet of paper to take some notes on.

Get out your diagram from your research paper. Get out a sheet of paper to take some notes on. Bellwork: Get out your diagram from your research paper. Get out a sheet of paper to take some notes on. Fill in the Following Table in your notes (assume an atom unless otherwise stated: Symbol Protons

More information

16.5 Coulomb s Law Types of Forces in Nature. 6.1 Newton s Law of Gravitation Coulomb s Law

16.5 Coulomb s Law Types of Forces in Nature. 6.1 Newton s Law of Gravitation Coulomb s Law 5-10 Types of Forces in Nature Modern physics now recognizes four fundamental forces: 1. Gravity 2. Electromagnetism 3. Weak nuclear force (responsible for some types of radioactive decay) 4. Strong nuclear

More information

Visit for more fantastic resources. AQA. A Level. A Level Physics. Particle physics (Answers) Name: Total Marks: /30

Visit   for more fantastic resources. AQA. A Level. A Level Physics. Particle physics (Answers) Name: Total Marks: /30 Visit http://www.mathsmadeeasy.co.uk/ for more fantastic resources. AQA A Level A Level Physics Particle physics (Answers) Name: Total Marks: /30 Maths Made Easy Complete Tuition Ltd 2017 1. Rutherford

More information

1, 2, 3, 4, 6, 14, 17 PS1.B

1, 2, 3, 4, 6, 14, 17 PS1.B Correlations to Next Generation Science Standards Physical Science Disciplinary Core Ideas PS-1 Matter and Its Interactions PS1.A Structure and Properties of Matter Each atom has a charged substructure

More information

The atom cont. +Investigating EM radiation

The atom cont. +Investigating EM radiation The atom cont. +Investigating EM radiation Announcements: First midterm is 7:30pm on Sept 26, 2013 Will post a past midterm exam from 2011 today. We are covering Chapter 3 today. (Started on Wednesday)

More information

Early Atomic Theories and the Origins of Quantum Theory. Chapter 3.1

Early Atomic Theories and the Origins of Quantum Theory. Chapter 3.1 Early Atomic Theories and the Origins of Quantum Theory Chapter 3.1 What is Matter Made of? People have wondered about the answer to this question for thousands of years Philosophers Matter is composed

More information

FXA Candidates should be able to :

FXA Candidates should be able to : 1 Candidates should be able to : INTRODUCTION Describe qualitatively the alpha-particle scattering experiment and the evidence this provides for the existence, charge and small size of the nucleus. Describe

More information

Gravitational Fields Review

Gravitational Fields Review Gravitational Fields Review 2.1 Exploration of Space Be able to: o describe planetary motion using Kepler s Laws o solve problems using Kepler s Laws o describe Newton s Law of Universal Gravitation o

More information

Chapter 32 Lecture Notes

Chapter 32 Lecture Notes Chapter 32 Lecture Notes Physics 2424 - Strauss Formulas: mc 2 hc/2πd 1. INTRODUCTION What are the most fundamental particles and what are the most fundamental forces that make up the universe? For a brick

More information

ATOMIC STRUCTURE. Name: Period: Date: 1) = a generalization of scientific observations that what happens (does explain)

ATOMIC STRUCTURE. Name: Period: Date: 1) = a generalization of scientific observations that what happens (does explain) ATOMIC STRUCTURE Name: Period: Date: I. LAW vs. THEORY: 1) = a generalization of scientific observations that what happens (does explain) 2) (model) = a set of assumptions used to explain observations

More information

HONORS CHEMISTRY. Chapter 4 Atomic Structure

HONORS CHEMISTRY. Chapter 4 Atomic Structure HONORS CHEMISTRY Chapter 4 Atomic Structure History of the Atomic Theory DEMOCRITUS (400 BC) 1st atomic theory World is made of empty space & tiny particles called atoms. Atomos - Greek for indivisible

More information

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms AP Chemistry Ms. Ye Name Date Block The Evolution of the Atomic Model Since atoms are too small to see even with a very powerful microscope, scientists rely upon indirect evidence and models to help them

More information

Atoms and Spectra October 8th, 2013

Atoms and Spectra October 8th, 2013 Atoms and Spectra October 8th, 2013 Announcements Second writing assignment due two weeks from today (again, on a news item of your choice). Be sure to make plans to visit one of the open observing nights

More information

4.1 Structure of the Atom

4.1 Structure of the Atom 4.1 Structure of the Atom How do atoms differ from each other? What are atoms composed of? What are the subatomic particles? 2-1 Structure of the Atom Atoms actually are divisible. They are composed of

More information

Name Class Date. Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY

Name Class Date. Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY Skills Worksheet Directed Reading A Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY Write the letter of the correct answer in the space provided. 1. Around 440 BCE, who thought

More information

BEGINNING OF ATOMIC THEORY

BEGINNING OF ATOMIC THEORY Skills Worksheet Directed Reading B Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY 1. What does the word atom mean? a. dividable b. invisible c. hard particles d. not able to

More information

Physics 116. Nov 21, Session 31 De Broglie, duality, and uncertainty. R. J. Wilkes

Physics 116. Nov 21, Session 31 De Broglie, duality, and uncertainty. R. J. Wilkes Physics 116 Session 31 De Broglie, duality, and uncertainty Nov 21, 2011 R. J. Wilkes Email: ph116@u.washington.edu Announcements HW 6 due today Clicker scores have been updated on Webassign gradebook

More information

Models of the Atom The Nature of Matter Textbook Inside the Atom

Models of the Atom The Nature of Matter Textbook Inside the Atom Models of the Atom The Nature of Matter Textbook Inside the Atom 1) Explain how scientists discovered particles of an atom. 2) Explain how today's model of the atom was developed. 3) Describe the structure

More information

What is matter? Matter is anything that has mass and takes up space. What is matter made of??

What is matter? Matter is anything that has mass and takes up space. What is matter made of?? What is matter? Matter is anything that has mass and takes up space What is matter made of?? Atoms. All matter is made of atoms. Atoms are the building blocks of Matter Remember???? The Cell theory - 3

More information

Rhonda Alexander IC Science Robert E. Lee

Rhonda Alexander IC Science Robert E. Lee Rhonda Alexander IC Science Robert E. Lee Atom The smallest particle of an element that retains all of the chemical properties of the element. The Theory & Evidence for John Dalton s Atomic Theory: Around

More information

BOHR CHADWICK S ATOMIC NUMBER

BOHR CHADWICK S ATOMIC NUMBER CH 11 T3 ATOMIC THEORY PART 2 1 You have mastered this topic when you can: 1) name and describe the atomic models developed by RUTHERFORD and BOHR. 2) describe CHADWICK S contribution to the structure

More information

Unified School District of De Pere Physics Benchmarks

Unified School District of De Pere Physics Benchmarks Content Standards: A. Students will understand that among the science disciplines, there are unifying themes: systems, order, organization, and interactions; evidence, models, and explanations; constancy,

More information

Nuclear Physics and Nuclear Reactions

Nuclear Physics and Nuclear Reactions Slide 1 / 33 Nuclear Physics and Nuclear Reactions The Nucleus Slide 2 / 33 Proton: The charge on a proton is +1.6x10-19 C. The mass of a proton is 1.6726x10-27 kg. Neutron: The neutron is neutral. The

More information

The birth of atomic physics and quantum mechanics. Honors Physics Don Rhine

The birth of atomic physics and quantum mechanics. Honors Physics Don Rhine The birth of atomic physics and quantum mechanics Honors Physics Don Rhine Constants & Atomic Data Look inside back cover of book! Speed of Light (vacuum): c = 3.00 x 10 8 m/s Elementary Charge: e - =

More information

CHEMISTRY 11 UNIT REVIEW: ATOMIC THEORY & PERIODIC TRENDS

CHEMISTRY 11 UNIT REVIEW: ATOMIC THEORY & PERIODIC TRENDS CHEMISTRY 11 UNIT REVIEW: ATOMIC THEORY & PERIODIC TRENDS Atoms Atoms have protons and neutrons located in the nucleus of the atom. Electrons orbit around the nucleus in well-defined paths. Protons have

More information

MODERN PHYSICS. A. s c B. dss C. u

MODERN PHYSICS. A. s c B. dss C. u MODERN PHYSIS Name: Date: 1. Which color of light has the greatest energy per photon? 4. The composition of a meson with a charge of 1 elementary charge could be. red. green. blue D. violet. s c. dss.

More information

Atomic Theory. Contribution to Modern Atomic Theory

Atomic Theory. Contribution to Modern Atomic Theory Alief High School Chemistry STAAR Review Reporting Category 2: Atomic Structure and Nuclear Chemistry C.6.A Understand the experimental design and conclusions used in the development of modern atomic theory,

More information

Test Review FQ3eso_U5_4_Electric field_test_review

Test Review FQ3eso_U5_4_Electric field_test_review Test Review FQ3eso_U5_4_Electric field_test_review Identify the letter of the choice that best completes the statement or answers the question. 1.- In which diagram do the field lines best represent the

More information

Discovery of the Atomic Nucleus. Conceptual Physics 11 th Edition. Discovery of the Electron. Discovery of the Atomic Nucleus

Discovery of the Atomic Nucleus. Conceptual Physics 11 th Edition. Discovery of the Electron. Discovery of the Atomic Nucleus Conceptual Physics 11 th Edition Chapter 32: THE ATOM AND THE QUANTUM Discovery of the Atomic Nucleus These alpha particles must have hit something relatively massive but what? Rutherford reasoned that

More information

Introduction to the Standard Model of elementary particle physics

Introduction to the Standard Model of elementary particle physics Introduction to the Standard Model of elementary particle physics Anders Ryd (Anders.Ryd@cornell.edu) May 31, 2011 Abstract This short compendium will try to explain our current understanding of the microscopic

More information

Updating the Atomic Theory

Updating the Atomic Theory Updating the Atomic Theory Three major differences between modern atomic theory and Dalton s atomic theory 1. Atoms are NOT indivisible. They are made up of smaller particles: electrons, protons and neutrons.

More information

Chapter 3 https://youtu.be/thndxfdkzzs?list=pl8dpuualjx tphzzyuwy6fyeax9mqq8ogr

Chapter 3 https://youtu.be/thndxfdkzzs?list=pl8dpuualjx tphzzyuwy6fyeax9mqq8ogr Chapter 3 https://youtu.be/thndxfdkzzs?list=pl8dpuualjx tphzzyuwy6fyeax9mqq8ogr The smallest particle of an element that retains the chemical properties of that element. Regions: Nucleus: very small region

More information

CH4 HOMEWORK : ATOMIC STRUCTURE

CH4 HOMEWORK : ATOMIC STRUCTURE Name Date Class 4 CH4 HOMEWORK : ATOMIC STRUCTURE SECTION 4.1 DEFINING THE ATOM (pages 101 103) This section describes early atomic theories of matter and provides ways to understand the tiny size of individual

More information

Chapter 4. Atomic Structure

Chapter 4. Atomic Structure Chapter 4 Atomic Structure Warm Up We have not yet discussed this material, but what do you know already?? What is an atom? What are electron, neutrons, and protons? Draw a picture of an atom from what

More information

The Particle World. This talk: What is our Universe made of? Where does it come from? Why does it behave the way it does?

The Particle World. This talk: What is our Universe made of? Where does it come from? Why does it behave the way it does? The Particle World What is our Universe made of? Where does it come from? Why does it behave the way it does? Particle physics tries to answer these questions. This talk: particles as we understand them

More information

Unravelling the Mysteries of Matter with the CERN Large Hadron Collider An Introduction/Overview of Particle Physics

Unravelling the Mysteries of Matter with the CERN Large Hadron Collider An Introduction/Overview of Particle Physics Unravelling the Mysteries of Matter with the CERN Large Hadron Collider An Introduction/Overview of Particle Physics Introductory Lecture August 3rd 2014 International Centre for Theoretical Physics and

More information

History of the OBJECTIVES. ESSENTIAL QUESTION What evidence is there for the existence of atoms and their sub-atomic particles?

History of the OBJECTIVES. ESSENTIAL QUESTION What evidence is there for the existence of atoms and their sub-atomic particles? History of the 09/15/2016 OBJECTIVES Understand the law of definite proportions. Define a scientific law and identify how observations become a law. Explain that a scientific theory is not established

More information

The Four Fundamental Forces. The Four Fundamental Forces. Gravitational Force. The Electrical Force. The Photon (γ) Unification. Mass.

The Four Fundamental Forces. The Four Fundamental Forces. Gravitational Force. The Electrical Force. The Photon (γ) Unification. Mass. The Four Fundamental Forces What are the four fundamental forces? The Four Fundamental Forces What are the four fundamental forces? Weaker Stronger Gravitational, Electromagnetic, Strong and Weak Nuclear

More information

Atom Model and Relativity

Atom Model and Relativity Atom Model and Relativity Kimmo Rouvari September 8, 203 Abstract What is the theoretical explanation for fine structure? What is the mechanism behind relativity? These questions have bothered numerous

More information

Nuclear Chemistry. Atomic Structure Notes Start on Slide 20 from the second class lecture

Nuclear Chemistry. Atomic Structure Notes Start on Slide 20 from the second class lecture Nuclear Chemistry Atomic Structure Notes Start on Slide 20 from the second class lecture The Birth of an Idea Democritus, 400 B.C. coined the term atom If you divide matter into smaller and smaller pieces,

More information

JJ Thomson Group 2 1. What are cathode rays? Cathode rays are a stream of electrons following through vacuum tube. Electrons

JJ Thomson Group 2 1. What are cathode rays? Cathode rays are a stream of electrons following through vacuum tube. Electrons Dalton Group 1 1. What did Democritus say about the atom? Democritus asked whether it is possible to divide a sample of matter forever into smaller and smaller pieces. After much thought, he concluded

More information

CHAPTER 3 The Experimental Basis of Quantum Theory

CHAPTER 3 The Experimental Basis of Quantum Theory CHAPTER 3 The Experimental Basis of Quantum Theory 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Discovery of the X Ray and the Electron Determination of Electron Charge Line Spectra Quantization As far as I can

More information

The Formation of the Solar System

The Formation of the Solar System Earth and the Solar System The Formation of the Solar System Write a number beside each picture to rank each from the oldest (1) to the youngest (4). The universe includes everything that exists: all matter,

More information

Chapter 4. Models of the Atom

Chapter 4. Models of the Atom Chapter 4 Models of the Atom Dalton Model of the Atom John Dalton proposed that all matter is made up of tiny particles. These particles are molecules or atoms. Molecules can be broken down into atoms

More information

3.1 Early History of Atomic Theories

3.1 Early History of Atomic Theories Figure 1 In Dalton s atomic model, an atom is a solid sphere, similar to a billiard ball. This simple model is still used today to represent the arrangement of atoms in molecules. DID YOU KNOW? William

More information