What is the mass in grams of a 8.0 cm 3 block of gold? Density of Au = 19.1 g/cm 3
|
|
|
- Pamela Carroll
- 6 years ago
- Views:
Transcription
1 What is the mass in grams of a 8.0 cm block of gold? Density of Au = 19.1 g/cm Write down the rule for determining the sig figs of a multiplication problem. Then check your answer for the correct # of sig figs. Put your answer in scientific notation. 1of 40 of 40 Also called the planetary model: electrons orbit the nucleus in defined paths B. Thompson s C. Bohr s D. Quantum Mechanical of 1 Also called the fuzzy cloud model: Probabilities are estimated of finding an electron B. Thompson s C. Rutherford s D. Bohr E. Quantum Mechanical 4of 1 Also called the Plum pudding model: electrons embedded in positive charge. B. Thompson s C. Rutherford s D. Quantum Mechanical Includes the idea that electrons surround the nucleus at energy levels. B. Bohr s C. Quantum Mechanical D. Both B and C 5of 1 6of 1 1
2 7of Describe the energies and positions of electrons according to the quantum mechanical model. 6. Describe how the shapes of orbitals related to different sublevels differ. 7. Identify the number of sublevels in an energy level. 8. Identify the maximum number of orbitals in a sublevel. (s, p, d, f) 9. Identify the maximum number of electrons in a sublevel. 10. Identify the maximum number of orbitals in an energy level. (n ) 11. Identify the maximum number of electrons in an energy level. (n ) 8of 40 The cloud in the quantum mechanical model shows the probability of finding an electron in a certain area The cloud shapes are called atomic orbitals Atomic orbitals The region or space where there is a high probability of finding an electron The fuzzy cloud Each orbital holds electrons Orbitals are arranged in energy levels and sublevels 9of of 40 Energy levels in the QMM Given principal quantum numbers (n) Designated in order of increasing energy n = 1,,,4.... Energy sublevels in the QMM each energy level contains a number of sublevels # of energy sublevels in each energy level = the principal quantum number 11 of 40 1 of 40
3 PRINCIPAL ENERGY NUMBER NUMBER OF SUBLEVELS n = 1 1 n = n = Each sublevel corresponds to orbitals with different shapes symbolized by letters: s, p, d, f s sublevel 1 spherical orbital holds e s p sublevel dumbbell shaped orbitals holds 6 e s n = of of Models of the Atom > Atomic Orbitals Different atomic orbitals are denoted by letters. The s orbitals are spherical, and p orbitals are dumbbell-shaped. d and f have complex shapes d sublevel has 5 orbitals holds 10 e s f sublevel has 7 orbitals holds 14 e s 15 of 6 16 of Models of the Atom > Atomic Orbitals Four of the five d orbitals have the same shape but different orientations in space. s sublevel: 1 spherical orbital, holds electrons 17 of 6 18 of 40
4 p sublevel: dumbell shaped orbitals, holds 6 electrons d sublevel: 5 orbitals, holds 10 electrons 19 of 40 0 of 40 f sublevel: 7 orbitals, holds 14 electrons Principal energy level = # of sublevels in that level n = 1: 1s n = : s, p n = : s, p, d n = 4: 4s, 4p, 4d, 4f 1 of 40 of 40 s = 1 orbital p = orbitals d = 5 orbitals f = 7 orbitals each orbital contains two electrons of 40 Principal Energy Level n Sublevels Orbitals in each sublevel n Electron capacity of sublevels Total Electron capacity n 1 s 1 s p s p d of 40 4
5 Energy level 1n has 1 orbital, holds e Energy level n has 4 orbitals, holds 8 e Energy level n has 9 orbitals, holds 18 e Energy level 4n has 16 orbitals, holds e Hint: n= principal energy level n = # orbitals in that energy level n = # of e s in that energy level 5 of 40 6 of 40 What is the lowest numbered principal energy level in which p orbitals are found? B. C. 7 of 40 D. 4 8 of 40 How many orbitals are in the p sublevel? C. 4 D. 5 How many orbitals are in the s sublevel? B. C. D. 4 9 of 1 0 of 1 5
6 How many orbitals are in the 4p sublevel? C. 4 D. 5 How many orbitals are in the p sublevel? C. 5 D. 7 1 of 1 of 1 How many orbitals are in the 4f sublevel? C. 5 D. 7 How many electrons are in the p sublevel? B. 6 C. 10 D. 14 of 1 4 of 1 How many electrons are in the d sublevel? B. 6 C. 10 D. 14 How many electrons are in the 4f sublevel? B. 6 C. 10 D of 1 6 of 1 6
7 How many orbitals are in the 4 th energy level? B. 4 C. 16 D. How many orbitals in the nd principal energy level? B. 4 C. 5 D. 9 7 of 1 8 of 1 How many electrons will the rd principal energy level hold? A. 9 B. 18 C. D. 64 WS 5.1 Read 5. 9 of 1 40 of 40 7
The Development of Atomic Models
5.1 Models of the Atom > The Development of Atomic Models Rutherford s atomic model could not explain the chemical proper4es of elements. Rutherford s atomic model could not explain why objects change
Quantum Mechanical Model of the Atom. Honors Chemistry Chapter 13
Quantum Mechanical Model of the Atom Honors Chemistry Chapter 13 Let s Review Dalton s Atomic Theory Thomson s Model Plum Pudding Rutherford s Model Bohr s Model Planetary Quantum Mechanical Model cloud
Quantum Theory and Electron Configurations
Chapter 5 Chapter 5 Quantum Theory and Electron Configurations It s all about color In terms of atomic models, so far: Dalton (1803) = Tiny, solid particle Thomson (1897) = Plum Pudding model Electrons
PROGRESSION OF THE ATOMIC MODEL
PROGRESSION OF THE ATOMIC MODEL By 1808, it was widely accepted that matter was made up of ELEMENTS, which consisted of tiny PARTICLES called ATOMS. After 2000 years - DEMOCRITUS was right all along John
The Atom Lets kick it old school...
Modern model.notebook Oct 25 9:18 PM The Atom Lets kick it old school... John Dalton All matter is composed of very small things which he called atoms. Electrons and the nucleus were unknown. Sep 2 7:50
Regents Chemistry Unit 1 Atomic Concepts. Textbook Chapters 3 & 4
Regents Chemistry Unit 1 Atomic Concepts Textbook Chapters 3 & 4 Atomic Theory- Atoms are the building blocks of matter Atomic Models Democritus ~440 BC a Greek Philosopher suggested that matter is made
Wave Mechanical Model of Atom. Electron Configuration Pictures. The energy of the level increases as the value of n increases.
Wave Mechanical Model of Atom Electron Configuration Pictures Mrs. Dormer Organic Chemistry Atoms have a series of energy levels called principal energy levels These are designated by whole numbers (symbolized
Mark Important Points in Margin. Orbitals
Date: Unit: Electronic Structure Knowledge/Understanding: what orbitals are the hierarchy of energy levels, sub-levels, and orbitals how the hierarchy corresponds with the periodic table of the elements
The Rutherford s model of the atom did not explain how an atom can emit light or the chemical properties of an atom.
The Rutherford s model of the atom did not explain how an atom can emit light or the chemical properties of an atom. Plum Pudding Model Rutherford s Model Niels Bohr studied the hydrogen atom because it
Observation information obtained through the senses; observation in science often involves measurement
Review Sheet Unit 1: The Atom Chemistry the study of the composition of matter and the changes matter undergoes Scientific Method Scientific method a logical, systematic approach to the solution of a scientific
CHAPTER 5. Electrons in Atoms. Rutherford Model. Bohr Model. Plum Pudding Model. 5.1 Atomic Models
CHAPTER 5 Electrons in Atoms 5.1 Atomic Models The Chemical properties of atoms, ions, and molecules are related to the arrangement of the electrons within them. The first model of the atom was Dalton
Electron Configuration
Electron Configuration Plumb Pudding Atomic Model Thomson s atomic model consisted of negatively charged electrons embedded in a ball of positive charge. Diagram pg 81 of chemistry text. Rutherford s Model
The Periodic Table & Electronic Structure
Periodic Table The Periodic Table & Electronic Structure Is there an overall reason that the elements are arranged in the order that they are? Yes! We ve seen that the elements are arranged in order of
Rutherford s Gold Foil Experiment. Quantum Theory Max Planck (1910)
Neils Bohr Niels Bohr (1913) developed the planetary model of the atom based upon the following: Rutherford s Gold Foil Experiment E = mc 2 Albert Einstein (1905) Quantum Theory Max Planck (1910) He postulated
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
Atomic Theory Review
Atomic Theory Review Fill in the Blank mass number 1. The number of protons and neutrons in the nucleus of an atom is the. isotopes 2. Atoms possessing the same number of protons but a different number
7.1 Development of a Modern Atomic Theory
7.1 Development of a Modern Atomic Theory Development of the Atomic Theory Many scientists in different countries have contributed to the understanding of matter - atoms John Dalton Credited with developing
LIMITATIONS OF RUTHERFORD S ATOMIC MODEL
ELECTRONS IN ATOMS LIMITATIONS OF RUTHERFORD S ATOMIC MODEL Did not explain the chemical properties of atoms For example, it could not explain why metals or compounds of metals give off characteristic
History of Atomic Theory
Unit 2 The Atom History of Atomic Theory A. Democritus and Aristotle Democritus named the "atom" - means indivisible Dalton (with work of Lavoisier, Proust, and Gay-Lussac) 1. atomic theory - first based
The structure of the Atom. Chemistry chapter 4
The structure of the Atom Chemistry chapter 4 Rutherford-Bohr Model Niels Bohr (1922) Proposed improvements to Rutherford Atomic Model. For this reason the planetary model of the atoms is sometimes called
Unit 3. The Atom & Modern Atomic Theory
Unit 3 The Atom & Modern Atomic Theory Theories of the Atom Early Models & Thoughts: Democritus Matter is made up of tiny particles called atoms. Smallest unit that retains the identity of the element
To remain valid, models and theories must:
Note Taking Guide: Episode 301 Model: A idea used to explain facts in. Theory: An of facts and. To remain valid, models and theories must: all known enable to make correct Democritus: proposed the of an
It is impossible to measure simultaneously the position and momentum of a small particle (subatomic particle) with absolute accuracy or certainty The
Mr.V It is impossible to measure simultaneously the position and momentum of a small particle (subatomic particle) with absolute accuracy or certainty The concept of the orbital was based on the probability
Chapter 5: Electrons in Atoms
Chapter 5: Electrons in Atoms Models of the Atom Rutherford used existing ideas about the atom and proposed an atomic model in which the electrons move around the nucleus, like the planets move around
SECTION 2: QUANTUM THEORY AND THE ATOM CHAPTER 9: ELECTRONS IN ATOMS AND THE PERIODIC TABLE
SECTION 2: QUANTUM THEORY AND THE ATOM CHAPTER 9: ELECTRONS IN ATOMS AND THE PERIODIC TABLE Learning Goals Compare the Bohr and quantum mechanical models of the atom. Explain the impact of de Broglie s
The atom has a small dense nucleus which. contains protons (+1 charge). contains electrons ( 1 charge).
Section 11.1 Rutherford s Atom Nuclear Model of the Atom Chapter 11 Modern Atomic Theory The atom has a small dense nucleus which is positively charged. contains protons (+1 charge). contains neutrons
CHAPTER 5 Electrons in Atoms
CHAPTER 5 Electrons in Atoms 5.1 Light & Quantized Energy Was the Nuclear Atomic model incomplete? To most scientists, the answer was yes. The arrangement of electrons was not determined > Remember...the
Name: Date: Blk: Dalton Thomson Rutherford Bohr THOMSON
Name: Date: Blk: NOTES: ATOMIC STRUCTURE I. History of the Atom Dalton Thomson Rutherford Bohr 1803 1897 1909 1913 1. DALTON - everything is made of atoms - different elements combine to form compounds
UNDERLYING STRUCTURE OF MATTER
1 UNDERLYING STRUCTURE OF MATTER Chapter 4 Atomic Structure DEFINING THE ATOM Earlier theories of matter: A. Even though his hypothesis lacked evidence at the time, the Greek philosopher Democritus (460
Arrangement of Electrons in Atoms
CHAPTER 4 REVIEW Arrangement of Electrons in Atoms SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. In what way does the photoelectric effect support the particle theory
Atomic Structure ATOMIC STRUCTURE. All matter is composed of atoms.
All matter is composed of atoms. ATOMIC STRUCTURE Understanding the structure of atoms is critical to understanding the properties of matter HISTORY OF THE ATOM DALTONS ATOMIC THEORY 1808 John Dalton suggested
Chem I - Wed, 9/16/15
Chem I - Wed, 9/16/15 Do Now Complete the back of worksheet 4.5 Homework Pennium Lab if not Finished E- Config POGIL Agenda Return Papers Wks 4.5 Pennium Lab Electron Config Chapter 5 Quantum Theory and
Chapter 7.5: The Quantum Mechanical Model of the Atom
Chapter 7.5: The Quantum Mechanical Model of the Atom It is often stated that of all the theories proposed in this century, the silliest is quantum theory. Some say the only thing that quantum theory has
TEST REVIEW GCAA Chemistry Atoms. A. Excited B. Energy C. Orbital D. Plum Pudding Model
TEST REVIEW GCAA Chemistry Atoms From the Hangman Game-----Match the answers correctly! A. Excited B. Energy C. Orbital D. Plum Pudding Model E. Bohr F. Electron G. Frequency H. Neutron I. Thomson J. alpha
Chapter 4 Section 2 Notes
Chapter 4 Section 2 Notes Vocabulary Heisenberg Uncertainty Principle- states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle. Quantum
Quantum Model & Configurations
Quantum Model & Configurations Bohr s Energy Levels: Bohr was able to tell us the electrons are found in layers around the nucleus based on the following: Each element gives off a unique emission spectrum
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
The Bohr Model Bohr proposed that an electron is found only in specific circular paths, or orbits, around the nucleus.
5.1 The Development of Atomic Models Rutherford s atomic model could not explain the chemical properties of elements. Rutherford s atomic model could not explain why objects change color when heated. The
CHEMISTRY Matter and Change
CHEMISTRY Matter and Change Chapter 5: Electrons in Atoms 5 Section 5.1 Section Section 5.3 Table Of Contents Light and Quantized Energy Electron Configuration Compare the wave and particle natures of
The History of the Atom. How did we learn about the atom?
The History of the Atom How did we learn about the atom? The Atomic Theory of Matter All matter is made up of fundamental particles. What does fundamental mean? The Greek Philosophers, 400 B.C. Democritus
Warm Up 2: Energy Levels
Warm Up 2: Energy Levels 2-21-17 LT I can explain how the periodic table is organized around electron energy levels and sub levels. Q1. What is an electron cloud? Q2. What does "n" mean in reference to
Chemistry Day 17. Friday, October 5 th Monday, October 8 th, 2018
Chemistry Day 17 Friday, October 5 th Monday, October 8 th, 2018 Do-Now: Unit 1 Test Day Do-Now 1. Write down today s FLT 2. Write down one question you have about the test (topic-wise or format-wise).
Warm Up 2: Energy Levels
Warm Up 2: Energy Levels 10-25-17 LT I can explain how the periodic table is organized around electron energy levels and sub levels. Q1. What is an electron cloud? Q2. What does "n" mean in reference to
Quantum Mechanical Model
Quantum Mechanical Model De Broglie De Broglie build upon Planck s observations of packets of light (photons) emit a distinctive quantum of energy. He proposed that the particles being emitted have particle
Section Review. Development of the Atomic Theory USING VOCABULARY UNDERSTANDING CONCEPTS. Skills Worksheet
Skills Worksheet Section Review Development of the Atomic Theory USING VOCABULARY 1. In your own words, write a definition for the term atom. Correct each statement by replacing the underlined term. 2.
INTRODUCTORY CHEMISTRY Concepts & Connections
INTRODUCTORY CHEMISTRY Concepts & Connections Sixth Edition by Charles H. Corwin Chapter 5 Models of the Atom by Christopher Hamaker Chapter 5 1 Dalton Model of the Atom John Dalton proposed that all matter
Electrons in Atoms. Section 5.1 Light and Quantized Energy
Name Date Class 5 Electrons in Atoms Section 5.1 Light and Quantized Energy In your textbook, read about the wave nature of light. Use each of the terms below just once to complete the passage. amplitude
Unit 2: Atomic Structure Practice Packet
Unit 2: Atomic Structure Practice Packet Dalton s Model: hard sphere model 1. I can describe John Dalton s contribution to our Thomson s Experiment: cathode ray experiment 2. I can describe JJ Thomson
Chemistry 11 Early models of the atom 1. Structure of the Atom
Chemistry 11 Early models of the atom 1 Structure of the Atom Democritus Developed the idea of atom Thought things were made of atoms that have different Shapes Aristotle Matter is made of different amounts
Q1 and Q2 Review large CHEMISTRY
Q1 and Q2 Review large CHEMISTRY Multiple Choice Identify the choice that best completes the statement or answers the question. 1. E = hv relates the following a. Energy to Planck s constant & wavelength
UNIT 2 - ATOMIC THEORY
UNIT 2 - ATOMIC THEORY VOCABULARY: Allotrope Electron Configuration Nuclear Charge Anion Element Nucleons Atom Excited state Nucleus Atomic Mass Ground state Orbital Atomic Mass unit (a.m.u.) Ion Proton
UNIT 2 - ATOMIC THEORY
*KEY* *KEY* UNIT 2 - ATOMIC THEORY *KEY* *KEY* VOCABULARY: Allotrope Anion Atom Atomic Mass Atomic Mass unit (a.m.u.) Atomic number Bohr model Cation Compound Electron Electron Configuration Element Excited
Particle and Nuclear Physics. Outline. Structure of the Atom. History of Atomic Structure. 1 Structure of the Atom
Outline of 1 of Atomic Spectra of Helium Classical Atom of Existence of spectral lines required new model of atom, so that only certain amounts of energy could be emitted or absorbed. By about 1890, most
Completing the Model of the Atom CHAPTER
Reviewing Vocabulary For each item in Column A, write the letter of the matching item in Column B Column A Column B 1 electron configuration a s, p, d, or f within an energy level 2 Heisenberg uncertainty
Atomic Structure. All matter is composed of atoms. Understanding the structure of atoms is critical to understanding the properties of matter.
Atomic Structure Atomic Structure All matter is composed of atoms. Understanding the structure of atoms is critical to understanding the properties of matter. HISTORY OF THE ATOM suggested that all matter
ACC- Parts of an Atom Quiz 151.All elements are made of a. molecules. b. elements. c. compounds. d. atoms.
ACC- Parts of an Am Quiz 151.All elements are made of a. molecules. b. elements. c. compounds. d. ams. 152.The sub-amic particles found in an am include a. prons. b. neutrons. c. electrons.. 153.A substance
Democritus and Leucippus Matter is made up of indivisible particles Dalton - one type of atom for each element. Greek Idea
Electrons in Atoms Democritus and Leucippus Matter is made up of indivisible particles Dalton - one type of atom for each element Greek Idea Thomson s Model Discovered electrons Atoms were made of positive
9/13/2011. The Greek Philosophers. Atomic Structure & The Periodic Table. Dalton s Atomic Theory. J. J. Thomson. Thomson s Experiment
Atomic Structure & The Periodic Table The Greek Philosophers Democritus believed that all matter is made up of tiny particles that could not be divided Aristotle -- thought that matter was made of only
1920 s Charge Cloud Model (developed by Louis debroglie, Erwin Schrodinger, Werner Heisenberg and others)
1920 s Charge Cloud Model (developed by Louis debroglie, Erwin Schrodinger, Werner Heisenberg and others) A new model was developed through complex mathematical equations which predicted the The Schrodinger
Electrons in Atoms. Section 5.1 Light and Quantized Energy Section 5.2 Quantum Theory and the Atom Section 5.3 Electron Configuration
Electrons in Atoms Section 5.1 Light and Quantized Energy Section 5.2 Quantum Theory and the Atom Section 5.3 Electron Configuration Click a hyperlink or folder tab to view the corresponding slides. Exit
INTRODUCTORY CHEMISTRY Concepts and Critical Thinking Seventh Edition by Charles H. Corwin
Lecture INTRODUCTORY CHEMISTRY Concepts and Critical Thinking Seventh Edition by Charles H. Corwin Models of the Atom by Christopher G. Hamaker Illinois State University Dalton Model of the Atom John Dalton
Atomic Structure Chapter 4
Atomic Structure Chapter 4 Outline A History of the Atomic Model Electron Structure of the Atom Useful Element Notations Early Thoughts on the Structure of Matter Before the invention of high powered microscopes,
PHY293 Lecture #15. November 27, Quantum Mechanics and the Atom
PHY293 Lecture #15 November 27, 2017 1. Quantum Mechanics and the Atom The Thompson/Plum Pudding Model Thompson discovered the electron in 1894 (Nobel Prize in 1906) Heating materials (metals) causes corpuscles
The term valent means outermost, therefore only the electrons on the outermost shell are called valent.
The atom is the smallest basic unit of an element which possesses the properties of the element. Structure of the Atom The term valent means outermost, therefore only the electrons on the outermost shell
Write the letter that best answers the question or completes the statement on the line provided.
Chapter 4 Atomic Structure Chapter Test A Multiple Choice Write the letter that best answers the question or completes the statement on the line provided. 1. Democritus thought that matter was made of
4/14/2013 ATOMIC STRUCTURE THE ATOMIC MODEL
ATOMIC STRUCTURE R E G E N T S C H E M I S T R Y M R S. T I L A R O HISTORY OF THE ATOM O L D A N D M O D E R N A T O M THE ATOMIC MODEL Model of the atom is based on indirect experimental data. Model
Name Date Due Test Day! Unit 1: Atomic Theory. Pretest Practice K +
! 2017-2018 Name Date Due Test Day! Unit 1: Atomic Theory Pretest Practice 1.) Complete the following table: Work space (if needed)! 2.) What do the superscripts and subscript represent in the symbol below?
Chapter #1 - Atomic Structure
Chapter #1 - Atomic Structure Atomic Theories Democritus (460-340 BC) Democritus believed that all matter consisted of extremely small particles that could not be divided. He called them atoms from the
Chapter 3 and 4 review. 1. List the types of electromagnetic radiation in order from smallest to highest wavelength:
Chapter 3 and 4 review Name 1. List the types of electromagnetic radiation in order from smallest to highest wavelength: 2. When placed in the above order, is the frequency increasing or decreasing? 3.
Terms to Know. 10.Angular quantum number 11.Magnetic quantum number 12.Spin quantum number
Terms to Know 1. Photon 2. Atomic emission spectrum 3. Ground state 4. Atomic orbital 5. Aufbau principle 6. Pauli exclusion principle 7. Hunds rule 8. Electron configuration 9. Principle quantum number
Name Date Class MODELS OF THE ATOM
Name Date Class 5.1 MODELS OF THE ATOM Section Review Objectives Identify inadequacies in the Rutherford atomic model Identify the new assumption in the Bohr model of the atom Describe the energies and
Energy and the Quantum Theory
Energy and the Quantum Theory Light electrons are understood by comparing them to light 1. radiant energy 2. travels through space 3. makes you feel warm Light has properties of waves and particles Amplitude:
Ancient Greek Models of Atoms
Atomic Theory Ancient Greek Models of Atoms The philosopher Democritus believed that all matter consisted of extremely small particles that could not be divided. He called these particles atoms from the
UNIT 2 PART 1: ELECTRONS
UNIT 2 PART 1: ELECTRONS Electrons in an Atom Bohr s Model: Electrons resided in an allowed orbit. Quantum Mechanics Model: Probability of finding an electron in an area around the nucleus. This area around
Warm-up For sulfur: 1. How many valence electrons does it have? 2. What ion does this typically form? 3. Write the electron configuration for the ion.
Warm-up For sulfur: 1. How many valence electrons does it have? 2. What ion does this typically form? 3. Write the electron configuration for the ion. Nucleus Contains 99.9% of the mass of an atom Found
Name Date Class MODELS OF THE ATOM
5.1 MODELS OF THE ATOM Section Review Objectives Identify inadequacies in the Rutherford atomic model Identify the new assumption in the Bohr model of the atom Describe the energies and positions of electrons
Electron Configuration
Electron Configuration Electrons as Waves Review Louis de Broglie (1924) Applied wave-particle theory to electrons ELECTRONS EXHIBIT WAVE PROPERTIES Louis de Broglie ~1924 QUANTIZED WAVELENGTHS 200 Fundamental
The Structure of the Atom
The Structure of the Atom 1 The Atom as Matter Dalton s atomic theory had problems It considered atoms to be hard, indivisible particles Did not explain why atoms reacted Also did not explain why atoms
Chem I Unit 3 Bingo Questions. 1. This atomic orbital has a lower energy than the 3d orbital.
Chem I Unit 3 Bingo Questions 1. This atomic orbital has a lower energy than the 3d orbital. 2. Whose model of the atom stated that the positive and negative charges were evenly distributed throughout
Atomic Structure. Chemistry Mr. McKenzie
Atomic Structure Chemistry Mr. McKenzie How was the understanding of the atom developed? John Dalton (1766-1844) - developed a model to explain observations made at the time 1. Elements are made of tiny
The Atom & Unanswered Questions:
The Atom & Unanswered Questions: 1) Recall-Rutherford s model, that atom s mass is concentrated in the nucleus & electrons move around it. a) Doesn t explain how the electrons were arranged around the
Statistical Mechanics
Statistical Mechanics Uncertainty Principle Demonstration Any experiment designed to observe the electron results in detection of a single electron particle and no interference pattern. Determinacy vs.
H!!!! = E! Lecture 7 - Atomic Structure. Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 7. Lecture 7 - Introduction
Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 7 Lecture 7 - Atomic Structure Reading in Silberberg - Chapter 7, Section 4 The Qunatum-Mechanical Model of the Atom The Quantum
UNIT 2 - ATOMIC THEORY
UNIT 2 - ATOMIC THEORY VOCABULARY: Allotrope Electron Configuration Nuclear Charge Anion Element Nucleons Atom Excited state Nucleus Atomic Mass Ground state Orbital Atomic Mass unit (a.m.u.) Ion Proton
Name Class Date ELECTRONS AND THE STRUCTURE OF ATOMS
Electrons in Atoms ELECTRONS AND THE STRUCTURE OF ATOMS 5.1 Revising the Atomic Model Essential Understanding of an atom. An electron s energy depends on its location around the nucleus Reading Strategy
a. According to Dalton, what is inside the atom? Nothing, the atom it the smallest
Unit 3: Review SCIENTIFIC THEORIES Dalton theorized that atoms were the smallest particle and could not be divided. Atoms can bond with one another in whole number ratios to form compounds but cannot be
Chemistry. Friday, October 13 th Monday, October 16 th, 2017
Chemistry Friday, October 13 th Monday, October 16 th, 2017 Do-Now: Atomic Orbital WS 1. Write down today s FLT 2. What was wrong with Rutherford s atomic model? 3. Sketch a diagram of Bohr s model. Label
What is a theory? An organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
Atomic Structure What is a theory? An organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena Early Theories Democritus: 4 B.C.: atom He
Chem 1075 Chapter 5 Models of the Atom Lecture Outline
Chem 1075 Chapter 5 Models of the Atom Lecture Outline Slide 2 Dalton Model of the Atom John Dalton proposed that is made up of The particles are or can be broken down into by chemical processes. cannot
7.2 The Bohr Theory of the Atom
7.2 The Bohr Theory of the Atom John Dalton Michael Faraday showed that atoms could gain electric charges J.J. Thompson The atomic theory was once again revised, to include his ideas: Ernest Rutherford
Elements and Compounds. Composition of Matter
Elements and Compounds Composition of Matter Elements Element Identification Source of Light Elements Solar Spectra Detecting Elements Molecular Spectrum of CO Chemical and Physical Properties Elements
Chapter 4 Arrangement of Electrons in Atoms. 4.1 The Development of a New Atomic Model
Chapter 4 Arrangement of Electrons in Atoms 4.1 The Development of a New Atomic Model Properties of Light Electromagnetic Radiation: EM radiation are forms of energy which move through space as waves There
Review Models of the Atom
Review Models of the Atom Copyright 2007 Pearson Benjamin Cummings. All rights reserved. Dalton proposes the indivisible unit of an element is the atom. Thomson discovers electrons, believed to reside
--THE QUANTUM MECHANICAL MODEL
--THE QUANTUM MECHANICAL MODEL Bohr s Energy Levels Electrons reside in certain energy levels Each level represents a certain amount of energy Low Energy levels: closer to nucleus High Energy levels: farther
Chapter 9. Blimps, Balloons, and Models for the Atom. Electrons in Atoms and the Periodic Table. Hindenburg. Properties of Elements Hydrogen Atoms
Chapter 9 Electrons in Atoms and the Periodic Table Blimps, Balloons, and Models for the Atom Hindenburg Blimps, Balloons, and Models for the Atom Properties of Elements Hydrogen Atoms Helium Atoms 1 Blimps,
Atomic Structure. Defining the Atom. Defining the Atom. Sizing up the Atom. Structure of the Atom 9/18/2012
Atomic Structure Defining the Atom Atom smallest particle of an that retains the chemical of that element 1 2 Defining the Atom The Greek philosopher Democritus (460 B.C. 370 B.C.) was among the to suggest
Particle Theory of Matter. By the late 1700s, scientists had adopted the Particle Theory of Matter. This theory states that:
Particle Theory of Matter By the late 1700s, scientists had adopted the Particle Theory of Matter. This theory states that: all matter is made up of very tiny particles each pure substance has its own
Chapter 31 Atomic Physics
100 92 86 100 92 84 100 92 84 98 92 83 97 92 82 96 91 80 96 91 76 95 91 74 95 90 68 95 89 67 95 89 66 94 87 93 86 No. of Students in Range Exam 3 Score Distribution 25 22 20 15 10 10 5 3 2 0 0 0 0 0 0
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,
Chapter 3. Atomic structure and the periodic table
Chapter 3 Atomic structure and the periodic table What s covered in this chapter? Structure of an atom Atomic number and mass number Isotopes and (average) atomic masses Periodic table How are electrons