Joke of the Day. Progress of the Atom. Discovering the Atom X X. CH 4- Atoms 1. Democritus Dalton Thomson. Rutherford X X Bohr X X X.
|
|
|
- Eleanore Atkinson
- 5 years ago
- Views:
Transcription
1 Joke of the Day Discovering the Atom Progress of the Atom In this lesson we will take a look at the scientists who explored the wonders of the atom. QuickTime and a decompressor are needed to see this picture. Democritus Dalton Thomson Indivisible Electron Nucleus Orbit Electron Cloud X X Rutherford X X Bohr X X X Wave X X X X Elements of chemistry- Atoms, the building blocks of matter Video CH 4- Atoms 1
2 Timeline of Progress of the Atom What is in an Atom? Atoms are the building blocks of everything. Atoms can be divided, but not easily on Earth. Aristotle s 4 elements Nuclear Fission 118 different types of Atoms What is in an Atom? Parts of the Atom Particle Charge Mass (kg) Location Proton x In the nucleus Neutron x In the nucleus Electron x Outside the nucleus CH 4- Atoms 2
3 What is in an Atom? Contains: Proton, Electron, and Neutron Proton and neutron are 2000 times heavier than electron Mostly empty space No overall charge (Neutral) Same number of proton and electron only Protons How many protons? What is in an Atom? An element is defined by the number of protons Atomic Number NO TWO ELEMENTS WILL HAVE THE SAME NUMBER OF PROTONS. Positive (+) charge Located in the nucleus Electrons What is in an Atom? Neutrons What is in an Atom? Electron have a negative (-) charge Located outside the nucleus The electric force between protons in the nucleus and electrons outside the nucleus holds the atom together. Neutrons have no charge (0) and are neutral. Neutrons contribute to the atomic mass of the atom. 11 CH 4- Atoms 3
4 What is in an Atom? ELECTRON THE ATOM Contains the protons and neutrons Where most of the mass of the atom is concentrated Has an overall positive (+) charge PROTON THE NUCLEUS NEUTRON 13 Atomic Number and Mass Number Atomic number (Z) = the number of protons This is also the number of protons if the atom is neutral. No two elements share the same atomic number or number of protons 6 Carbon: Z = Hydrogen: Z = 1 Uranium: Z = 92 Atomic Number and Mass Number Mass number (A) = the total number of subatomic particles in the nucleus, that is the sum of the protons and the neutrons. Mass number is denoted by A Example: A fluorine atom has 9 protons and 10 neutrons, so A= 19 for fluorine. Carbon: A= 12 Chlorine: A= 35 Aluminum: A= 27 mass number can be estimated by rounding the average atomic mass. CH 4- Atoms 4
5 Finding # of Neutrons We can find the number of neutrons by subtracting the Atomic Number from the Mass Number. Mass number (A) -Atomic number (Z) Number of neutrons F has 10 neutrons. Al has neutrons = = 14 Joke for the Day Why shouldn t you trust an atom? They make up everything. Try this. Try This Identify the following two atoms Element Number of Protons Number of Neutrons Number of Electrons Atomic Mass Atomic Number A B Tantalum Radium Copyright 2010 Ryan P. Murphy CH 4- Atoms 5
6 Try This Atomic mass Average atomic mass (amu) is the weighted average of the masses of all the commonly occurring isotopes of an element. Ni= Fe= K= Copyright 2010 Ryan P. Murphy Ion Formation Atoms with a charge Different number of protons and electrons Form by changing the number of electrons ONLY It happens to atoms that do NOT have their outermost energy levels filled with electrons. EXAMPLE A neutral magnesium (Mg) atom has 12 protons and 12 electrons. If the magnesium atom loses 2 electrons, it will have a net electrical charge of 2. To find net charge of an ion, subtract the number of electrons from the number of protons. Number of protons = 12 - Number of electrons = A magnesium ion is represented as Mg +2. CH 4- Atoms 6
7 EXAMPLE 1: 1. Sodium (Na) atoms have 11 protons and electrons 11 with a net charge of If the Sodium ion only has 10 electrons, what is the net charge of the ion?. ( = +1) 3. What is the chemical symbol for this ion? Na +1 EXAMPLE 2: 1. Beryllium (Be) atoms have 4 protons and electrons 4 with a net charge of If the Beryllium ion has only 2 electrons, what is the net charge of the ion?. (+4-2 = +2) 3. What is the chemical symbol for this ion? Be 2+ Learning Check Counting Learning Check State the number of protons, neutrons, and electrons in each of these ions. 39 K + 16 O Ca #p #n o #e Write the nuclear symbol form for the following atoms or ions: A. 8 p +, 8 n, 8 e - B. 17p +, 20n, 17e - C. 47p +, 60 n, 46 e - O Cl Ag + CH 4- Atoms 7
8 An isotope is an atom that has the same number of protons but a different number of neutrons (relative to other atoms of the element). Same number of electrons They vary in mass and mass number (A). A - Z = n Isotopes 6n How many Neutrons? Atomic number stays the same. Why? Same number protons 8n What are Isotopes? All atoms of an element have the same atomic number and the same number of protons. However, atoms do not necessarily have the same number of neutrons. Atoms with the same number of electrons and protons, but different numbers of neutrons, are called isotopes. Different isotopes belong to the same element because they have the same number of electrons, which means that they all behave almost the same in chemical reactions. Same element, but different mass due to different number of neutrons. Carbon-12 Isotopes Both Carbon Carbon-14 Isotopes CHANGE IN WEIGHT, BUT NOT CHARGE TWO ISOTOPES OF HYDROGEN. ON THE LEFT, ONE NEUTRON ON THE RIGHT, THERE ARE TWO NEUTRONS 6 PROTONS 6 PROTONS 8 NEUTRONS CH 4- Atoms 8
9 Isotopes Atoms of the same element (same Z) but different mass number (A). Boron-10 ( 10 B) has 5 p and 5 n Boron-11 ( 11 B) has 5 p and 6 n 10 B 11 B Isotopes of Hydrogen Hydrogen 1 Protons = 1 Electrons = 1 Neutrons = 0 Hydrogen 2 Protons = 1 Electrons = 1 Neutrons = 1 Hydrogen 3 Protons = 1 Electrons = 1 Neutrons = 2 Isotopes? Which of the following represent isotopes of the same element? Which element? 234 X 234 X 235 X 238 X Isotope Neptunium Isotope Uranium Learning Check Counting Naturally occurring carbon consists of three isotopes, 12 C, 13 C, and 14 C. State the number of protons, neutrons, and electrons in each of these carbon atoms. 12 C 13 C 14 C #p #n o #e CH 4- Atoms 9
10 Complete Nuclear Symbols Practice Problems Isotopes should be written using the complete nuclear symbol or by using a hyphen symbol. A charge should be indicated if the atom is not neutral. EXAMPLE: (hyphen symbol) Chlorine - 37 mass number Complete nuclear symbol for an element is written like this mass number atomic number Cl +2 element symbol and charge 1. List out the number of protons, electrons, and neutrons of Pb 2. List out the number of protons, electrons, and neutrons of Atoms of a certain isotope have 73 neutrons and a mass of 123. a. What is the atomic number? 25 Mn +2 b. How many electrons are there? c. What is the name of the element? d. Write the chemical symbol for this isotope. CH 4- Atoms 10
11 Learning Check Moles Molecular Weight Molecular Mass Formula Weight Formula Mass An atom has 14 protons and 20 neutrons. A. Its atomic number is 1) 14 2) 16 3) 34 B. Its mass number is 1) 14 2) 16 3) 34 C. The element is 1) Si 2) Ca 3) Se D. Another isotope of this element is 1) 34 X 2) 34 X 3) 36 X Molar mass: the mass, in grams, of one mole of a substance. Avogadro s number: X This is defined as the number of particles in 12 g of Carbon-12. Avogadro s number is not useful for larger objects x 10²³ Amedeo Avogadro The Mole! 602,213,670,000,00 0,000,000,000 particles! CH 4- Atoms 11
12 Modern Atomic Theory Electrons can be found only in certain energy levels, not between levels. Electron location (not precise) is limited to energy levels. Energy Level Describe the path the electron takes around the nucleus Farther from nucleus is more energy Gain energy they move away (absorbing photon) Lose energy they move toward (release photon) Only certain energies are allowed in each atom Bohr Model Bohr models show every electrons on each energy level of an atom. Energy Levels Like an elevator it can only be on certain floors Never in between Energy levels get closer together the higher you go Each has room for a certain number of electrons Argon-18 4 th Energy Level 3 rd Energy Level 8e - 2 nd Energy Level 8e - 1 st Energy Level 2e - Nucleus CH 4- Atoms 12
13 Electron structure Consider an atom of Potassium Nucleus The inner shell has electrons The next shell has electrons The next shell has electrons The next shell has the remaining electron Electron structure = 2,8,8,1 Regions where you have a chance of finding the electron There are different types of orbitals s, p, d, f Orbitals Each has its own shape or shapes Each shape has room for two electrons Each can be found in the energy levels S orbital P orbital 3 dumbbell-shaped regions Each p orbital can hold a maximum of 2 electrons, so all three together can hold a total of 6 electrons. CH 4- Atoms 13
14 d orbital Five different shapes More complex Each can hold 2 electrons Total of 10 electrons f orbital seven different shapes Much more complex Each can hold 2 electrons Total of 14 electrons CH 4- Atoms 14
Development of Atomic Theory Elements of chemistry- Atoms, the building blocks of matter Video
Development of Atomic Theory Elements of chemistry- Atoms, the building blocks of matter Video 2 CH 4- Atoms 1 Discovering the Atom In this lesson we will take a look at the scientists who explored the
How to Use This Presentation
How to Use This Presentation To View the presentation as a slideshow with effects select View on the menu bar and click on Slide Show. To advance through the presentation, click the right-arrow key or
UNIT 4 ATOMIC THEORY
UNIT 4 ATOMIC THEORY 1. Atomic theory: Dalton s model Thomson s model Rutherford s model Bohr s model Electron cloud model 2. Particles inside the atom Atomic number Mass number 3. Ions Cations Anions
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
protons electrons neutrons nucleus Center of the atom; contains protons and neutrons. The Atom Molecules are made up of two or more atoms.
_ Period: The Atom Ch. 18:1 Everything is made of atoms. Atoms are the smallest part of matter. Atoms are made up of 3 subatomic particles (particles smaller than the atom): electrons, protons, and neutrons.
Collegiate Institute for Math and Science Day 57: December 9, 2016 Room 427
Unit 2: Atomic Concepts Outline Name: Period: Date: 1. The modern model of the atom has evolved over a long period of time through the work of many scientists. Dalton s Model: Elements are made of atoms
The concept of an atom is DEMOCRITUS & JOHN DALTON
ATOMIC STRUCTURE HISTORY OF THE ATOM The concept of an atom is originated i from Greek philosophers h DEMOCRITUS & JOHN DALTON HISTORY OF THE ATOM Democritus Democritus studied the nature of matter and
Atomic Number. Mass Number. Counting Subatomic Particles
Counting Subatomic Particles Now that scientists have discovered that atoms can be subdivided into subatomic particles, there was a new problem. How do we count subatomic particles? We use terms like atomic
CHAPTER 3 THE ATOM. 1. Matter is composed extremely small particles called atoms
CHAPTER 3 THE ATOM Read pgs. 107-110 I. History Democritus Greek philosopher, 400 B.C., said all matter is made up of small, indivisible particles he called atoms (Greek for indivisible ). He wasn t believed
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
CHAPTER -4 STRUCTURE OF ATOM CONCEPT DETAILS
CHAPTER -4 STRUCTURE OF ATOM CONCEPT DETAILS KEY CONCEPTS : [ *rating as per the significance of concept] 1. Dalton s Atomic theory ** 2. J J Thomson Experiments *** 3. Rutherford s Scattering Experiments
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
Lesson 12: Atoms and Subatomic Particles
NOTES Name: Date: Class: Lesson 12: Atoms and Subatomic Particles Element: fundamental substance that ; all matter consists of ~100 elements Atom: that can exist; smallest unit of an element that can enter
1. The mass number of the atom is the total number of &. 2. What are the three particles in an atom and what is each of their charges?
WEDNESDAY, OCT. 15 1. The mass number of the atom is the total number of &. 2. What are the three particles in an atom and what is each of their charges? 3. The symbol for elements is commonly written
All atoms of an element must have the same number of protons but not neutrons.
Counting Atoms Key Terms atomic number nuclide mole isotope unified atomic mass unit Avogadro s number mass number average atomic mass molar mass Consider neon, Ne, the gas used in many illuminated signs.
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
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
VIII. Progression of the atomic model Democritus/Dalton --> Thomson --> Rutherford --> Bohr --> Quantum Mechanical
HISTORY OF ATOMIC THEORY NOTES I. Ancient Greeks A. Aristotle ~ believed there were 4 elements: B. Democritus ~ believed in the "particle theory": ~ named the small particles "atoms" which means II. Dalton
Notes:&&Unit&4:&Atomics& & & & & & & & & & & & & & & & &
Name: RegentsChemistry:Mr.Palermo Notes:Unit4:Atomics! www.mrpalermo.com Name: $ Key$Ideas$ Themodernmodeloftheatomhasevolvedoveralongperiodoftimethroughtheworkofmany scientists.(3.1a) Eachatomhasanucleus,withanoverallpositivecharge,surroundedbyoneormorenegatively
Properties of Atoms and The Periodic Table. Ch 16, pg
Properties of Atoms and The Periodic Table Ch 16, pg. 488-506 Today s Learning Objectives Describe the 5 models of the atom. Be able to arrange the 5 models of the atom in order. Explain why the models
Chapter 2: Atoms and the Periodic Table
1. Which element is a nonmetal? A) K B) Co C) Br D) Al Ans: C Difficulty: Easy 2. Which element is a metal? A) Li B) Si C) Cl D) Ar E) More than one of the elements above are metals. 3. Which element is
SCIENCE 8 WORKBOOK Section 2 Atomic Theory Ms. Jamieson 2018 This workbook belongs to:
SCIENCE 8 WORKBOOK Section 2 Atomic Theory Ms. Jamieson 2018 This workbook belongs to: Eric Hamber Secondary 5025 Willow Street Vancouver, BC Table of Contents A. Models in Science Making Sense of Models....
Smoking at an early age may make it more difficult to quit smoking later. Which of the above statements is an opinion and which is a theory?
Preview Lesson Starter Objectives Foundations of Atomic Theory Law of Conservation of Mass Law of Multiple Proportions Dalton s Atomic Theory Modern Atomic Theory Section 1 The Atom: From Philosophical
Unit 3 Atomic Structure
Name: Unit 3 Atomic Structure Scientist Year Contribution and/ or Experimental Work Democritus Aristotle Alchemists Boyle Franklin Dalton Avogadro Mendeleev Moseley 1 Scientist Year Contribution and/ or
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
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
Unit 4: The Atom, Atomic Number, Mass Number, And Isotopes
#5 PPT APE MAN AND ISOTOPES! Unit 4: The Atom, Atomic Number, Mass Number, And Isotopes LecturePLUS Timberlake 1 Atomic Theory Atoms are building blocks of elements Similar atoms in each element Different
Structure of the Atom. Atomic Components
Chapter 19 Atoms 0 Matter is anything that takes up space and has mass. All matter is made of atoms. 0 Atoms are the basic building blocks of matter. They make up everything around us; Your desk, the board,
Honors Chemistry Unit 2: The Atom & Its Nucleus
Honors Chemistry Unit 2: The Atom & Its Nucleus (2017-2018) Bunsen, I must tell you how excellent your study of chemical spectroscopy is, as is your pioneer work in photochemistry but what really impresses
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
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
The Atom & Periodic Table. Unit 2 Topics 4-6
The Atom & Periodic Table Unit 2 Topics 4-6 Electrons in Atoms Topic 4 Describe Bohr s model of the atom. Sketch it! Bohr - A review electrons exist in orbits around the nucleus. Bohr - IB Information
Elements and Atoms NEVER TRUST AN ATOM THEY MAKE UP EVERYTHING
Elements and Atoms NEVER TRUST AN ATOM THEY MAKE UP EVERYTHING Atoms Matter! All matter is made up of tiny, fundamental particles called atoms Atoms are the smallest particles of an element that retain
Regents Chemistry PRACTICE PACKET. Unit 2: Atomic Theory
*STUDENT* *STUDENT* Regents Chemistry PRACTICE PACKET Unit 2: Atomic Theory 2 Copyright 2015 Tim Dolgos Name History of Atomic Theory Period Fill in the missing information in the chart below: Name of
Unit 3. Atoms and molecules
Unit 3. Atoms and molecules Index. s and compounds...2.. Dalton's Atomic theory...2 2.-The atom...2 3.-Atomic number and mass number...2 4.-Isotopes, atomic mass unit and atomic mass...3 5.- configuration...3
A1: Atomic Structure Worksheet (Goals 1 3, Chapter 4)
Unit 3 Assignment Packet Name: Period: A1: Atomic Structure Worksheet (Goals 1 3, Chapter 4) 1. Democritus, who lived in Greece during the 4 th century B.C., suggested that is made up of tiny particles
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
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
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
Chapter 2 Atoms and Elements. 2.4 The Atom
Chapter 2 Atoms and Elements 2.4 The Atom Atoms Dalton s Atomic Theory Are tiny particles of matter. Of an element are similar and different from other elements. Of two or more different elements combine
Teacher: Mr. gerraputa. Name: Base your answer to the question on the information below. Given the electron dot diagram:
Teacher: Mr. gerraputa Print Close Name: 1. Given the electron dot diagram: The valence electrons represented by the electron dot diagram could be those of atoms in Group 1. 13 3. 3 2. 15 4. 16 2. Which
UNIT 2 - ATOMIC THEORY
UNIT 2 - ATOMIC THEORY VOCABULARY: Allotrope Anion Atom Atomic Mass Atomic Mass unit (a.m.u.) Atomic number Bohr model Cation Compound Electron Electron Configuration Element Excited state Ground state
Vocabulary Review. Atom Cathode Ray Electrons Protons Neutrons Nucleus
2/19/16 Do Now On your half sheet of paper, identify the scientist that either discovered a part of the atom or developed a theory related to atomic structure. Vocabulary Review Atom Cathode Ray Electrons
Democritus s ideas don t explain chemical behavior & lacked experimental support.
A1: Atomic Structure Worksheet Key (Goals 1 3, Chapter 4) 1. Democritus, who lived in Greece during the 4 th century B.C., suggested that matter is made up of tiny particles that cannot be divided. He
Title: Chem Review 2 TOPIC: DISCOVERY OF ATOM
Title: Chem Review 2 TOPIC: DISCOVERY OF ATOM EQ: How were the 3 subatomic particles discovered? Title and Highlight Topic: EQ: Date Reflect Question: Reflect on the material by asking a question (its
Chapter 3. Atom. Table of Contents. 1. Atom and History of Atom 2. Subatomic Particles 3. Isotopes 4. Ions 5. Atomic Terminology
Atom Table of Contents 1. Atom and History of Atom 2. Subatomic Particles 3. Isotopes 4. Ions 5. Atomic Terminology The History of The Atom Warm up Make a list of inferences about any properties of objects
CHAPTER 4. Atomic Structure. 4.1 Atoms. Dalton s Atomic Theory
CHAPTER 4 Atomic Structure 4.1 Atoms Democritus first suggested the idea of atoms Indivisible & Indestructible 460 B.C. 370 B.C. Dalton s Atomic Theory 1. All elements are composed of submicroscopic indivisible
Note that the protons and neutrons are each almost 2,000 times more massive than an electron; What is the approximate diameter of an atom?
Atomic Structure and the Periodic Table Evolution of Atomic Theory The ancient Greek scientist Democritus is often credited with developing the idea of the atom Democritus proposed that matter was, on
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
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
Atomic Structure. How do you discover and study something you can t see?
Atomic Structure How do you discover and study something you can t see? WHAT IS A THEORY? A hypothesis is a proposed explanation made as a starting point for further investigation (It s bright outside
Where it came from and what we know now
Where it came from and what we know now History of the Atom The first mention of the atom came from Democritus in ancient Greece He suggested that the universe was made up of small, indivisible units called
Test Review # 4. Chemistry: Form TR4-9A
Chemistry: Form TR4-9A REVIEW Name Date Period Test Review # 4 Location of electrons. Electrons are in regions of the atom known as orbitals, which are found in subdivisions of the principal energy levels
Atomic Structure. For thousands of years, people had many ideas about matter Ancient Greeks believed that everything was made up of the four elements
An atom is the smallest particle of an element that retains its identity in a chemical reaction. Although early philosophers and scientists could not observe individual atoms, they were still able to propose
Chapter 3. Table of Contents. Section 1 The Atom: From Philosophical Idea to Scientific Theory. Section 2 The Structure of the Atom
Atoms: The Building Blocks of Matter Table of Contents Section 1 The Atom: From Philosophical Idea to Scientific Theory Section 2 The Structure of the Atom Section 1 The Atom: From Philosophical Idea to
Elements, Atoms, and Ions
Elements, Atoms, and Ions Chemistry I: Chapter 2b Chemistry I Honors: Chapter 3 ICP: Chapter 17 SAVE PAPER AND INK!!! When you print out the notes on PowerPoint, print "Handouts" instead of "Slides" in
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
Name: Date: Pd: Unit 2: Atomic Structure: Isotopes Guided Notes. Positively charged (+1). Found in the nucleus.
_ Atoms: The Building Blocks of everything? Unit 2: Atomic Structure: Isotopes Guided Notes An atom consists of a An atom is the smallest unit of an element that is possible. All the matter around us is
CHAPTER 3. Atoms: The Building Blocks of Matter
CHAPTER 3 Atoms: The Building Blocks of Matter Origins of the Atom Democritus: Greek philosopher (460 BC - 370 BC) Coined the term atom from the Greek word atomos Democritus believes that atoms were indivisible
Chapter 3. Chapter 3. Objectives. Table of Contents. Chapter 3. Chapter 3. Foundations of Atomic Theory, continued. Foundations of Atomic Theory
Atoms: The Building Blocks of Matter Table of Contents Philosophical Idea to Scientific Theory Objectives Explain the law of conservation of mass, the law of definite proportions, and the law of multiple
Name: Date: ChemT1. 1) Using the diagram above, answer the following question: What can be inferred from the diagram about the structure of the atom?
Name: Date: ChemT1 1) Using the diagram above, answer the following question: What can be inferred from the diagram about the structure of the atom? A. the atom is very small B. the electrons are moving
Atomic Structure Practice Questions
Atomic Structure Practice Questions 1. Experiments performed to reveal the structure of atoms led scientists to conclude that an atom s (1) positive charge is evenly distributed throughout its volume (2)
All are made of atoms. The, your and even are made of atoms. Atoms are. One atom is only one of a meter wide!
Name: Atoms & The Periodic Table WHAT IS AN ATOM? What is an atom? All are made of atoms. The, your and even are made of atoms. Atoms are. One atom is only one of a meter wide! DEMOCRITIS The idea of an
CHAPTER 4: THE ATOM PHYSICAL SCIENCE
CHAPTER 4: THE ATOM PHYSICAL SCIENCE By C. Goodman, Doral Academy Preparatory High School, 2011-2013 Based on a PowerPoint presentation by Mrs. S. Temple, Doral Academy Preparatory High School Essential
Unit 1 Part 1 Atomic Structure and The Periodic Table Introduction to Atomic Structure UNIT 1 ATOMIC STRUCTURE AND THE PERIODIC TABLE
UNIT 1 ATOMIC STRUCTURE AND THE PERIODIC TABLE PART 1 INTRODUCTION TO ATOMIC STRUCTURE Contents 1. Protons, Neutrons and Electrons 2. Early Models of the Atom 3. Isotopes and Atomic Mass 4. Atoms and Ions
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
! Chemical!Bond!! Lewis!Diagram!(HI!#13)! o Ionic!and!covalent!bond!(M!+!NM!or!NM!+!NM)!(Complete!transfer!of!e S!or!sharing!of!e S )!
!! Unit*2.*Atomic*Theory*! Molar!mass!calculation!using!the!abundance!of!isotopes!of!an!element!!!! Electron!configuration!(both!full!notation!and!core!notation)!(HI!#12)! o Neutral!atom,!anion,!cation!(ensure!you!know!the!rules!associated!with!ions)!
Atom Practice Test (#1) 1) What is the total number of valence electrons in an atom with the electron configuration 2-8-5? a) 2 b) 5 c) 8 d) 15
Atom Practice Test (#1) Name Multiple Choice 1 pt. each 1) What is the total number of valence electrons in an atom with the electron configuration 2-8-5? a) 2 b) 5 c) 8 d) 15 2) A Ca 2+ ion differs from
Atoms and their structure
Atoms and their structure History of atomic theory Not the history of atom, but the idea of the atom Original idea Ancient Greece (400 B.C..) Democritus and Leucippus Greek philosophers Another Greek Aristotle
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,
Chapter 2. Atomic Structure
Atomic Structure Chapter 2 What particles compose the substances around us? When you use the term particle to explain the different properties of a solid, liquid or gas, you are referring to the simplest,
Unit 3: Atoms and Periodic Table Retake Review Packet
Name Date Block Unit 3: Atoms and Periodic Table Retake Review Packet Completing each section of the retake review packet will fulfill one of the requirements for retaking the unit 3 test. Section 1: Vocabulary
I. History and Development of the Atom
Unit 3: The Atom I. History and Development of the Atom A. Democritus (around 400 B.C.) Based on his observations of the natural world around him, Democritus was the first to suggest that all matter was
Atomic Structure Chapter 4 Mr. Hines
Atomic Structure Chapter 4 Mr. Hines Part A Standard model of the atom Learning Targets and I can statements 1 List, label, and describe the parts of an atom. 2 Identify the atomic number and the atomic
) The nucleus of an atom, when compared to the entire atom, is (Circle two).
Unit 3: The Atom Review Packet Directions: Answer the following questions WITHOUT using your notes first. This will be a great way to study for your test. Then, get out your notes and go back and fill
Activity # 2. Name. Date due. Assignment on Atomic Structure
Activity # 2 10 Name Date Date due Assignment on Atomic Structure NOTE: This assignment is based on material on the Power Point called Atomic Structure, as well as pages 167-173 in the Science Probe textbook.
Atomic Structure Chapter 4 Mr. Hines
Atomic Structure Chapter 4 Mr. Hines Part A Standard model of the atom Learning Targets and I can statements 1 List, label, and describe the parts of an atom. 2 Identify the atomic number and the atomic
Chapter 3. Atomic Number. Atomic Number. Section 3. Atoms of different elements have different numbers of protons.
Section 3 Atomic Number Atoms of different elements have different numbers of protons. Atoms of the same element all have the same number of protons. The atomic number (Z) of an element is the number of
Chapter 5 Atoms: The Building Blocks f of Matter
Chapter 5 Atoms: The Building Blocks of Matter Atomic Models How Humans Developed Modern Atomic Theory Democritus- Ancient Greek Matter cannot be divided into smaller and smaller pieces forever, eventually
Biotech 2: Atoms and Molecules OS Text Reading pp Electron cloud Atoms & Nucleus 2e Subatomic Particles Helium Electron cloud
9/4/017 Biotech : Atoms and Molecules OS Text Reading pp. 34-4 Atoms & Subatomic Particles Nucleus Helium e cloud cloud e Protons Neutrons Mass number = 4 s Nucleus Carbon atomic number = # of protons
Unit 2 continued-chemical Foundations Atoms, Ions, &Elements
Unit 2 continuedchemical Foundations Atoms, Ions, &Elements The Elements Most abundant elements in/on Earth: Oxygen 49.2% Silicon25.7% Most abundant in the human body: Oxygen65.0% Carbon18.0 % Hydrogen10.0%
1. Explain the law of conservation of mass in your own words. Matter is neither created nor destroyed in a chemical reaction.
Chapter 3 Exam Review KEY I. Atomic Theory 1. Explain the law of conservation of mass in your own words. Matter is neither created nor destroyed in a chemical reaction. 2. What were Rutherford s two main
The Reference Atomic Weight
How to Calculate Molecular Weights of Compounds The Molecular Weight (also referred to as the Formula Weight) of a chemical compound is calculated by adding the atomic masses (weights) of the atoms (elements)
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
Question 1: What are canal rays? Answer: Canal rays are positively charged radiations. These rays consist of positively charged particles known as
Question 1: What are canal rays? Canal rays are positively charged radiations. These rays consist of positively charged particles known as protons. They were discovered by Goldstein in 1886. Question 2:
An atom is the smallest physical particle of an element that still retains the properties of that element.
Unit 3.1 An atom is the smallest physical particle of an element that still retains the properties of that element. At sea level, one cubic centimeter of air (size of a sugar cube, or marble) will have
CP/Honors Chemistry Unit 3: Atomic Theory Sections 4.1, 4.2, 4.3
CP/Honors Chemistry Unit 3: Atomic Theory Sections 4.1, 4.2, 4.3 Subatomic Particles Warm-Up Quiz 1. What are the three subatomic particles? 2. Where are the particles located in the atom? 3. What are
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
2.1. SYMBOLS AND FORMULAS A unique symbol is used to represent each element. Formulas are used to represent compounds.
2.1. SYMBOLS AND FORMULAS A unique symbol is used to represent each element. Formulas are used to represent compounds. Symbols of Elements Atoms and Molecules ELEMENTAL SYMBOLS A symbol is assigned to
CHAPTER 4: Matter is Made up of Atoms
CHAPTER 4: Matter is Made up of Atoms ATOMS & THEIR STRUCTURE Aristotle thought matter was made of air, earth, fire and water. Democritus (250 B.C.)- Said the world is made of empty space & tiny particles
4. The mass of a proton is approximately equal to the mass of A an alpha particle C a positron. B a beta particle D a neutron
1. Which particles have approximately the same mass? A an electron and an alpha particle B an electron and a proton C a neutron and an alpha particle D a neutron and a proton 2. Which phrase describes
Name Period Date Engage-Atoms 1. What does Bill cut in half?
Name Period Date Engage-Atoms https://www.youtube.com/watch?v=fmuskig2exi 1. What does Bill cut in half? 2. By cutting this item in half he tries to prove that there are pieces that are uncut- table called
Full file at
16 Chapter 2: Atoms and the Periodic Table Solutions to In-Chapter Problems 2.1 Each element is identified by a one- or two-letter symbol. Use the periodic table to find the symbol for each element. a.
Chemistry Chapter 3. Atoms: The Building Blocks of Matter
Chemistry Chapter 3 Atoms: The Building Blocks of Matter I. From Philosophical Idea to Scientific Theory History of the Atom The Ancient Greeks were the first to come up with the idea of the atom. Democritus
HIGH SCHOOL SCIENCE. Physical Science 9: Atomic Structure
HIGH SCHOOL SCIENCE Physical Science 9: Atomic Structure WILLMAR PUBLIC SCHOOL 2013-2014 EDITION CHAPTER 9 Atomic Structure In this chapter you will: 1. Compare and contrast quarks, leptons, and bosons.
2. The mass of an electron is NOT REALLY ZERO, but it s so small, about 1/1750 of a proton or neutron, that we
Atomic Theory Notes OB: Students will examine basic structure of the atom, learn what the numbers on the Periodic table mean, and look at electron orbitals. All atoms are made up of three sub-atomic (smaller
Chapter 2 Atoms and Elements
Chapter 2 Atoms and Elements Law of Conservation of Mass in a chemical reaction, matter is neither created nor destroyed total mass of the materials you have before the reaction must equal the total mass
Chapter 2 Atoms and Elements
1 Chapter 2 Atoms and Elements Sec 2.3 Modern Atomic Theory and the Laws That Led to it Law of conservation of mass states that in a chemical reaction, matter is neither created nor destroyed. Law of definite
Atoms Section 2 Section 2: The Structure of Atoms
Section 2: The Structure of Atoms Preview Key Ideas Bellringer What Is in an Atom? Atomic Number and Mass Number Isotopes Atomic Masses Math Skills Key Ideas What is the difference between protons, neutrons,
ATOMIC STRUCTURE. Atoms are really small. Gold and Palladium Atoms
ATOMIC STRUCTURE Atoms are really small. Gold and Palladium Atoms Theory vs Model Models are diagrams or apparatuses used to simplify the description of a complicated idea John Dalton English scientist