Atomic Theory Day 2: Scientists of the ATOM Name Date Period
|
|
- Nora Turner
- 6 years ago
- Views:
Transcription
1 Atomic Theory Day 2: Scientists of the ATOM Name Date Period Essential Idea: How do scientists determine the properties of something they cannot see? Activity: 1) From the information given, (development of the atomic through the last 2500 years) create a poster that outlines the following for each scientist: Year/ time Belief/ philosophy Experiment that they conducted to validate their beliefs (if any) Discovery/ contribution Resulting : name and drawing 2) PUT UP YOUR POSTER then as you walk around the room complete the chart below which you will use to answer the questions as a group. Scientist Year Belief/ philosophy Democritus Experiment Discovery/ contribution Model Dalton Thomson
2 Rutherford Bohr Modern 3) After you return to your seat and discuss with your group, label each below to reflect the scientist and name of. Scientist: Model: HW: Reflection: On a separate sheet of paper, write a (minimum) three paragraph news story about the discovery of one of the s above. Place yourself into the time when the was discovered, and imagine your audience does not understand the discovery or its importance. - Include one image / drawing / graphic
3 Video: The 2400-year search for the atom Activity: 1) From the information given in the article, (development of the atomic through the last 2500 years) create a poster that outlines the following for each scientist: Year/ time Belief/ philosophy Experiment that they conducted to validate their beliefs (if any) Discovery/ contribution Resulting : name and drawing 2) PUT UP YOUR POSTER then as you walk around the room complete the chart below which you will use to answer the questions as a group. Critique 2 posters, think of the aesthetics (would you want to read this poster? Is it inviting?); organization (is each section clearly labelled, does the information flow?) information (can you get all the info you need to complete the chart? Is there any additional info that was surprising (fun fact)?) Scientist a. Yea r b. Belief/ philosophy 1.Democritu s BC All the matter in the universe is composed of tiny. These are indivisible 2.Dalton 1808 Element cannot be broken down by ordinary chemical means. Theory: 1. Atoms of a given element are identical in properties 2. Atoms cannot be subdivided, created/ destroyed. 3. Atoms of dif elements c. Experiment NONE Based on advances in analytical instruments (e.g. balance) d. Discovery/ contributio n Coined term atomos - indivisible conservation of mass. definite proportions multiple proportions e. Model N/A Cannonbal l
4 combine in whole # ratios to form compounds. 4. In chemical reactions, atoms are combined, separated or rearranged 3.Thomson 1897 Dalton s Laws and 4.Rutherford 1911 Thomson s alpha should pass easily through w/ minor deflection from the positive charges spread out in the gold atoms 5.Bohr 1913 Rutherford s Model Cathode ray ray can be deflected by applying a positively charged electric field Gold foil experiment narrow beam of alpha used to it a thin sheet of gold foil. Line Spectral analysis (chocolate chip where chips would be his electrons and the cookie is the positive matter to cancel out the negative electrons) Small dense positively charged nucleus with mostly EMPTY SPACE are found in orbitals Plumpudding Nuclear Planetary 6.Modern/ electron cloud Today move in waves and as individual Pauli, Planck, Heisenberg, Schroedinge r etc. Orbitalsmost likely location to find electrons Wavemechanica l 3) After you return to your seat and discuss with your group, label each below to reflect the scientist and name of.
5 _Dalton Thomson Rutherford Bohr modern_ cannonball plum pudding_ nuclear_ planetary wave-mechanical
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 information7.1 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
More informationThe Development of Atomic Theory
The Development of Atomic Theory Ideas & Theories in Science Change Our theory about the atom has changed over time as new studies are done. Even though no one has ever seen an atom up close we are still
More information9/23/2012. Democritus 400 B.C. Greek philosopher Proposed that all materials are made from atoms. Coined Greek word atmos, meaning indivisible.
Mr. Sudbury Atoms are too small to see with your eyes. Atoms are too small to see with the most powerful microscopes. Scientist use models to explain atoms. A scientific model is an representation containing
More informationWork hard. Be nice. Name: Period: Date: UNIT 2: Atomic Concepts Lesson 3: Some go through and some don t
Name: Period: Date: UNIT 2: Atomic Concepts Lesson 3: Some go through and some don t Do Now: By the end of today, you will have an answer to: How did the gold foil experiment lead to the modern model of
More informationParticle 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
More informationMemorial to a Scientist
Memorial to a Scientist 1. My Question of Inquiry: Use this sheet to outline how you will collect and present the information to the class. My Group s Scientist: 1 Part I: Memorial to a Scientist: John
More informationAtomic Theory Timeline Project
Atomic Theory Timeline Project MAKE AN ATOMIC THEORY TIMELINE! Directions: 1) Read the information about the scientists and theories that have developed over time about matter and the atom in the Atomic
More informationGet 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 informationThe 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
More informationAtomic 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 informationChapter #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
More informationAtomic 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 informationNOTES ON CHAPTER 4: ELEMENTS AND THE PERIODIC TABLE. 4.1 Introduction to Atoms
NOTES ON CHAPTER 4: ELEMENTS AND THE PERIODIC TABLE 4.1 Introduction to Atoms The first people to think about the nature of matter were the ancient Greeks. Around 430 B.C, Democritus, a Greek philosopher,
More informationSNC1D1 History of the Atom
SNC1D1 History of the Atom What is the atom? Atoms are the building block for all matter: Atoms make up elements! Elements combine to make compounds!2 ATOMIC MODEL TIMELINE 400 B.C PRESENT DAY ATOMIC MODEL
More informationThe structure of Atom III
The structure of Atom III Atomic Structure If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generations of creatures, what statement
More information8.5 Atomic Structure
Views of the Atom Democritus (Greek philosopher from 460 BC to 370 BC) Believed that atoms were indivisible and indestructible. His approach was simply philosophy and was not based upon the scientific
More information9.11 Atomic Theory. My Future Matters. Objectives: - SWBAT describe and explain the four historical models of the atom and how they evolved over time.
9.11 Atomic Theory Objectives: - SWBAT describe and explain the four historical models of the atom and how they evolved over time. Read & Analyze: Directions: Read the following text. While you are reading
More informationDemocritus 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 informationOrigins of the Atom. Atoms: The Building Blocks of Matter. Let s Get Ready to Rumble. Aristotle s Theory of the Atom CHAPTER 3
Origins of the Atom CHAPTER 3 Atoms: The Building Blocks of Matter Let s Get Ready to Rumble The idea of the atom was met with great skepticism, especially among great thinkers. The most vocal critic of
More informationThe following is a quote by Democritus (c. 460 c. 370 bce). Paraphrase this quote in your own words in your science journal.
Section 1 Development of the Atomic Theory Bellringer The following is a quote by Democritus (c. 460 c. 370 bce). Paraphrase this quote in your own words in your science journal. Color exists by convention,
More informationChap 4 Bell -Ringers
Chap 4 Bell -Ringers The Structure of the Atom The Atom has a Structure What we ve seen so far Chapter 1 The Science of Chemistry - Chemistry is about discovering and understanding natural laws using the
More informationHistory 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 informationThe Development of Atomic Theory. SCH12U February Mr. Dvorsky
The Development of Atomic Theory SCH12U February 3 2011 Mr. Dvorsky Nearly 2500 years ago Greek philosophers (i.e. Democritus) expressed a belief matter is composed of tiny indivisible particles called
More informationChapter 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 informationDevelopment 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
More informationBellwork: 2/6/2013. atom is the. atom below. in an atom is found in the. mostly. 2. The smallest part of an. 1. Label the parts of the
Bellwork: 2/6/2013 1. Label the parts of the atom below. B 2. The smallest part of an atom is the. 3. The majority of the mass in an atom is found in the. A C 4. An atom is made up of mostly. Bellwork:
More information1 Development of the Atomic Theory
CHAPTER 4 1 Development of the Atomic Theory SECTION Introduction to Atoms BEFORE YOU READ After you read this section, you should be able to answer these questions: What is the atomic theory? How has
More informationHistory 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
More informationChemistry. Robert Taggart
Chemistry Robert Taggart Table of Contents To the Student..................................................v Unit 1: Matter and Measurement Lesson 1: Chemistry and the Scientific Method...................3
More information1. 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 informationCH4 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 information1 Development of the Atomic Theory
CHAPTER 11 1 Development of the Atomic Theory SECTION Introduction to Atoms BEFORE YOU READ After you read this section, you should be able to answer these questions: What is the atomic theory? How has
More informationSection 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.
More informationAtomic Theory. The History of Atomic Theory
Atomic Theory The History of Atomic Theory This model of the atom may look familiar to you. This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in different energy levels.
More informationdemocritus (~440 bc) who was he? theorized: A Greek philosopher
democritus (~440 bc) who was he? A Greek philosopher theorized: Everything in the world is made up small particles that we cannot see The shape of these particles determine the properties of a substance
More informationWhat is matter? Matter is anything that has mass and takes up space. Matter is made up of atoms.
Matter What is matter? Matter is anything that has mass and takes up space. Matter is made up of atoms. Is it matter? Can you measure the object? Does it take up space? Does the object have a mass? Come
More informationDo Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester?
Chemistry Ms. Ye Name Date Block Do Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester? Atoms Video: 1. Proper Portioned Giant Atom Model of Science: Structure
More informationAtomic Theory. Past and Present: pieces of a puzzle
Atomic Theory Past and Present: pieces of a puzzle The First Atomic Hypothesis Democritus (460 370 BC): Greek philosopher Speculated that matter is composed of atoms which move through empty space Atoms
More informationVocabulary and Section Summary A
Skills Worksheet Vocabulary and Section Summary A Development of the Atomic Theory VOCABULARY In your own words, write a definition of the following terms in the space provided. 1. atom 2. electron 3.
More informationAtomic Models. A model uses familiar ideas to explain unfamiliar facts observed in nature. A model can be changed as new information is collected.
This model of the atom may look familiar to you. This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in different energy levels. Atomic Models A model uses familiar ideas
More informationCHAPTER 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
More informationWarm Up 9/17/12. How long have people been interested in understanding matter and its structure? A. Thousands of years. B.
Warm Up 9/17/12 How long have people been interested in understanding matter and its structure? A. Thousands of years B. Hundreds of years C. A few years D. Never What is an atom? The smallest particle
More informationAtomic 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
More informationThe Beginning of the Atom
The Beginning of the Atom Democritus s Atomic Philosophy 460BC 370BC ~ Believed atoms were indivisible and indestructible Dalton took it and ran with it 2000 yrs later! Jan 31 3:33 PM Dalton and the Atomic
More informationPassing an electric current makes a beam appear to move from the negative to the positive end.
Chapter 4 Atoms and their structure History of the atom Not the history of atom, but the idea of the atom. Original idea Ancient Greece (400 B.C.) Democritus and Leucippus Greek philosophers. Smallest
More informationH CHEM - WED, 9/7/16. Do Now Be ready for notes. Sigfig review problem. Agenda Atomic Theory. Homework. Error Analysis
H CHEM - WED, 9/7/16 Do Now Be ready for notes. Sigfig review problem Agenda Atomic Theory Error Analysis Homework Possibly atomic theory paragraph THE ATOM DEFINITION TO START Atom smallest particle
More informationMake 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 informationDirected Reading B. Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY. is a(n). DALTON S ATOMIC THEORY BASED ON EXPERIMENTS
Skills Worksheet Directed Reading B Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY 1. The word atom comes from the Greek word atomos, which means a. dividable. b. invisible. c.
More informationUnit 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
More informationEarly Ideas About Matter
Early Ideas About Matter Democritus (460 370 BC) believed that matter is made of small, solid objects called atomos, from which the English word atom is derived. Early Ideas About Matter (cont.) Aristotle
More informationBinder. Notes: DO NOW
CONTENT OBJECTIVE: SWBAT EXPLAIN HOW THE MODEL OF THE ATOM HAS EVOLVED. Binder HW for checking: 2.1 HW SKILL OBJECTIVES: SWBAT STOP AND THINK ALOUD TO MAKE SURE OF THEIR UNDERSTANDING SWBAT HIGHLIGHT FOR
More informationWhat 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
More informationEarly Models of the Atom
Early Models of the Atom 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,
More informationDo Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester?
Chemistry Ms. Ye Name Date Block Do Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester? Atoms Video: 1. Proper Portioned Giant Atom Model of Science: Structure
More informationDEMOCRITUS - A philosopher in the year 400 B.C. - He didn t do experiments and he wondered if atoms kept on being divided, that there would only be
DEMOCRITUS A philosopher in the year 400 B.C. He didn t do experiments and he wondered if atoms kept on being divided, that there would only be one undividable particle left. He discovered that this was
More informationWhere are we? Check-In
Where are we? Check-In ü Building Blocks of Matter ü Moles, molecules, grams, gases, ü The Bohr Model solutions, and percent composition Coulomb s Law ü Empirical and Molecular formulas Photoelectron Spectroscopy
More informationChapter 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 informationAtomic Theory. Democritus to the Planetary Model
Atomic Theory Democritus to the Planetary Model Democritus Greek philosopher (460-370 BCE) Believed in the philosophy of materialism With Leucippus, they though that matter can not be divided infinitely.
More informationPROGRESSION 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
More informationAtomic 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
More informationAncient 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
More informationBEGINNING 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 informationName Date Class ATOMIC STRUCTURE
4 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 atoms. Early Models of
More informationI. 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
More informationGeneral Chemistry Standard : Identify the significance of the various outcomes of Thomson s and Rutherford s experiments
Not the history of the atom, but the idea of the atom The atom was not discovered until recently Original Idea Ancient Greece (400 BC) Proposed by lesser-known scientists They looked at a beach made of
More informationEarly Atomic Models. Atoms: the smallest particle of an element that retains the properties of that element.
Chapter 5 Early Atomic Models Atoms: the smallest particle of an element that retains the properties of that element. (Greek: atomos = indivisible) Democritus (Greek teacher in the 4 th century BC) First
More informationName 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 informationChapter 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 informationUnderstanding the Atom 1.3
Understanding the Atom 1.3 Introduction to Atoms 1.What are some ways that scientists have described the atom? 2.What are the parts of the atom, and how are they arranged? 3.How are atoms of all elements
More informationCHEMISTRY 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 informationAtom 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 informationNuclear 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 informationEarly Atomic Theory. Alchemy. The atom
Early Atomic Theory Chapter 3 Democritus 460 BC- ~ 370 BC Nothing exists except atoms and empty space; everything else is opinion. Matter is composed of small indivisible particles, atomos meaning Indivisible
More informationName Class Date. The statements below are false. For each statement, replace the underlined term to make a true statement.
Skills Worksheet Chapter Review USING KEY TERMS The statements below are false. For each statement, replace the underlined term to make a true statement. 1. Electrons have a positive charge. 2. All atoms
More informationWhere 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
More informationDemocritus & 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 informationScientist wanted to understand how the atom looked. It was known that matter was neutral. It was known that matter had mass
Atom Models Scientist wanted to understand how the atom looked It was known that matter was neutral It was known that matter had mass They used these ideas to come up with their models, however science
More informationAtomic Theory. Introducing the Atomic Theory:
Atomic Theory Chemistry is the science of matter. Matter is made up of things called atoms, elements, and molecules. But have you ever wondered if atoms and molecules are real? Would you be surprised to
More informationFill in the Following Table in your notes (assume an atom unless otherwise stated: Symbol Protons Electrons Neutrons Atomic # Mass # 24 Na
Bellwork: Fill in the Following Table in your notes (assume an atom unless otherwise stated: Symbol Protons Electrons Neutrons Atomic # Mass # 24 Na + 11 29 63 Bellwork: Fill in the Following Table in
More informationAtomic Structure. ppst.com
Atomic Structure ppst.com Defining the Atom The Greek philosopher (460 B.C. 370 B.C.) was among the first to suggest the existence of atoms (from the Greek word ) He believed that atoms were and His ideas
More informationAtomic Structure. A model uses familiar ideas to explain unfamiliar facts observed in nature.
Atomic Structure 1 2 This model of the atom may look familiar to you. This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in different energy levels. A model uses familiar
More informationHISTORY 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 informationWarm Up 1: CH 4 RG Pass it up!
WU: A number is not a measurement without a Thermal expansion of metals = draw a particle drawing of a solid under these 3 conditions 30 o C, room temp, 1000 o C What is air made of? What does the law
More informationCHAPTER 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
More informationAn Introduction to Atomic Theory. VCE Chemistry Unit 1: The Big Ideas of Chemistry Area of Study 1 The Periodic Table
An Introduction to Atomic Theory VCE Chemistry Unit 1: The Big Ideas of Chemistry Area of Study 1 The Periodic Table From Democritus to Dalton Two thousand years ago, Democritus proposed that matter consisted
More informationAP Atomic Structure Models
AP Atomic Structure Models What is a Model? On a scrap piece of paper, write down your definition of a model with at least two examples. A model is a representation of an object, idea, action, or concept.
More informationDemocritus 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
More informationName 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
More informationAtomic Structure Early Theories Democritus: 4 B.C.: atom Dalton: atoms cannot Thomson: Cathode Ray Tubes Rutherford:
Atomic Structure n a well-substantiated explanation of some aspect of the natural world; n an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set
More informationThe History of Atomic Theory Chapter 3--Chemistry
The History of Atomic Theory Chapter 3--Chemistry In this lesson, we ll learn about the men whose quests for knowledge about the fundamental nature of the universe helped define our views. The atomic model
More informationSCH3U1 This presentation and more can be found at
SCH3U1 Today s Learning goals: Review history of the atomic model Practice using standard atomic notation Introduce radioisotopes This presentation and more can be found at http://lorenowicz.weebly.com
More informationChapter 4: Atomic Structure Section 4.1 Defining the Atom
Chapter 4: Atomic Structure Section 4.1 Defining the Atom Early Models of the Atom atom the smallest particle of an element that retains its identity in a chemical reaction Democritus s Atomic Philosophy
More informationEARLY VIEWS: The Ancient Greeks
Feb 7 11:59 AM EARLY VIEWS: The Ancient Greeks Empedocles (c. 450 B.C.) proposed Four Element theory he thought that matter was composed of four elements: AIR, EARTH, FIRE and WATER elements mixed together
More information4.2 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 informationJJ 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 informationMajor upsetting discoveries: Today s Objectives/Agenda. Notice: New Unit: with Ms. V. after school Before Friday 9/22.
Bellwork Monday 9 18 17 Tuesday 9 19 17 *This should be the last box on bellwork: 1. What are some major points in history where common knowledge was upset by a new discovery? 2. Draw what you think an
More informationDemocritus 460 BC 370 BC. First scholar to suggest that atoms existed. Believed that atoms were indivisible and indestructible.
Democritus 460 BC 370 BC First scholar to suggest that atoms existed. Believed that atoms were indivisible and indestructible. Democritus 460 BC 370 BC Problems with theory: 1. Did not explain chemical
More informationName Chemistry-PAP Per. Notes: Atomic Structure
Name Chemistry-PAP Per. I. Historical Development of the Atomic Model Ancient Greek Model Notes: Atomic Structure Democritus (460-370 BC) was an ancient Greek philosopher credited with the first particle
More informationInvestigating Atoms and Atomic Theory
Investigating Atoms and Atomic Theory Students should be able to: Describe the particle theory of matter. PS.2a Use the Bohr model to differentiate among the three basic particles in the atom (proton,
More information