Atomic Theory Agenda  What do you know about the atom? (whiteboard review)  Song – Atomic Theory Polka  Reading 4.2 & 4.3  Notes.

Slides:

Advertisements

Similar presentations

Atomic Theory Timeline

Advertisements

First to propose idea of atom Democritus. Wrote out the first four point atomic theory Dalton.

Atomic Theory. Let’s Take a Trip Through Time! Atomic Theories Timeline Name Demo- critus DaltonThomsonRutherfordBohrSchrödinger Heisenberg Time Frame.

Section 4.1—Development of Atomic Theory

Scientists that changed our view of the atom

Atomic Theory Agenda New elements Grade tests Guided reading of chp 4

Atomic Theory Agenda Review Elements

Atomic Theory Polka!. Dalton Thomson Rutherford Bohr.

Democritus: The Atom (around 400 BCE)

Democritus (460 BC-350BC) was a Greek philosopher who thought that all matter was made of tiny indivisible particles he called atomos.

Atomic Structure Timeline

HISTORY OF THE ATOMIC MODEL ATOMIC THEORY

Chapter 4: Glow in the Dark

Atomic Theory Agenda  New elements  Grade tests  Guided reading of chp 4  Song about Atomic Theory  Notes on Atomic Theory.

The Atomic Model Chem 9.

Development of our understanding of the atom. Early Models Democritus was first to suggest atom in 4 th century B.C. Believed matter was made of tiny.

What are important discoveries related to the structure of an atom?

Chemistry Sheds Light on Our Lives Unit 4 Atoms and Light

Chapter 3 The History of the Atom. I. The Scientists and their Discoveries A.Democritus 1. Date = 400 B.C 2. Discovery = Theorized the smallest unit of.

PART ONE ATOMIC THEORY. Over the course of thousands of years our idea of what matter is made of and what the atom looks like has changed dramatically.

+ HAPPY HUMP DAY!!! Homework DUE now! Get ready for your element quiz!!! TEST TOMORROW chem nerds… STUDY!!!

Chapter Sections: 10.1, 10.5, 10.6, 4.3, 4.5 and a little extra History and Models of the Atom Click on me:

The Parts of an Atom.

Chapters 4, 5.1, + 25 HISTORY OF THE ATOMIC MODEL.

NOTES – Introduction to Atomic Theory ( )

Section 1- Discovering the parts of the atom

History of Atomic Theory

Chemistry AI Chapter 4 A. Atom (Section 4.1) 1. Democritus (460B.C.-370B.C.) The smallest part of an element that retains its identity during a chemical.

HISTORY OF THE ATOM. Aristotle 400 BC 400 BC - Claimed that there was no smallest part of matter - Claimed that there was no smallest part of matter -

Atomic Theory Past and Present.

+ Unit 3 The History of the ATOM and Atomic Structures Democritus & Dalton Thomson Rutherford Bohr Schrodinger.

Atomic Theory Timeline Song Words by Christy Johannesson To the tune of the “Alphabet Song”

Atomic Model History.

8 TH Grade Development of Atomic Theory. 1. Democritus (430 BC) proposes the idea that matter is formed of small pieces that could not be cut into smaller.

 Review  Movie  Notes  Homework. KK  Cu  Br  Xe.

The Development of the Atomic Theory. Dalton’s Atomic Theory founder of the atomic theory atoms in Greek means indivisible, indestructible 1.All matter.

Subatomic Particles Agenda   Review   GAME   Song   Notes   Guided practice   Homework.

EARLY ATOMIC THEORY CHAPTER 3. THE ATOM: FROM PHILOSOPHY TO SCIENTIFIC THEORY 400 BC – Democritus came up with the idea of the ________ Nature’s basic.

Evolution of the Atomic Theory. Greek Philosophy (400 BC) Democritus “All matter is made of atoms” Philosophy is knowledge gained only by observation.

Solid, homogeneous, indestructible and indivisible (400 BC)

Atomic Theory The Who’s Who of Atoms. Democritus ~460 BCE. Defined atom as the “smallest bit of matter. 100 years later, Aristotle dismissed his idea.

History Of Atoms By: Dana Zahra 7D.

History of the atom: History of the atom: Changing atomic models.

Agenda Elements/AT/Atoms, Ions, & Isotopes Homework Check Song Notes Go over Test Homework.

The Atom Chapters 4-5 Atomic Theories Democritus ~ 400 BC believed that atoms were indivisible and indestructible Dalton ~ 1800’s Developed through experiments.

Models of Atoms atom.

Atomic Theory Date. Democritus Date B.C. Democritus was a philosopher; did no research He thought that everything was made up of tiny round things.

Unit 3 History of the Atom.

Agenda Review Elements Review Atomic Theory Song Atomic pictures Notes.

Atomic Theory and Structure of the Atom. first to suggest the existence of atoms believed atoms were small indivisible particles Atom: smallest particle.

Atomic model timeline.

Small individual particles that make up matter. This includes gases.

Atomic Theory. Atomic History Ancient Greeks John Dalton JJ Thomson Ernest Rutherford James Chadwick Neils Bohr Erwin Schrödinger.

Greeks Before 400 BC Observers (not scientists) did not use scientific experiments Matter could be endlessly divided Matter is made of fire, water, air,

History of the Atomic Theory An atom is the smallest particle of an element that retains its identity in a chemical reaction. Our current theory of the.

Evolution of the Atomic Theory. Greek Philosophy (400 BC) Democritus “All matter is made of atoms” Philosophy is knowledge gained only by observation.

DEVELOPMENT OF THE ATOMIC THEORY Atom- smallest particle into which an element can be divided and still be the same substance Called the building blocks.

The Changing Model of the Atom. Aristotle 400 BCE claimed that there was no smallest part of matter different substances were made up of different proportions.

Atomic Theorists The ‘Who’s Who’ of the atomic world.

Structure of the Atom: The Developing Story SNC1D/E.

Atomic Theory Bellwork. Early Atomic Theory Democritus’ Atomic Theory – All matter consists of invisible particles called atoms. – Atoms are indestructible.

The Atom Chapters 4-5.

Work in partners and grab a textbook or your phone and make a timeline of the main scientists who contributed to the atomic structure. Include Democritus,

Atomic Structure (History & Background

Atomic Theory Polka!.

Models of the Atom.

X Chapter 4 Test Review The Atomic Theory.

Chapter 4 Atoms.

Aim: What is the structure of the Atom?

Presentation transcript:

Atomic Theory Agenda  What do you know about the atom? (whiteboard review)  Song – Atomic Theory Polka  Reading 4.2 & 4.3  Notes

What do you know about the atom?  Who was Democritus?  What did he contribute to the model of the atom?  Who came up with the atomic theory?  What were his four points?

Mn manganese

scandium Sc

Fe iron

titanium Ti

Co cobalt

vanadium V

Ni nickel

chromium Cr

Cu copper

zinc Zn

Song Time

Atomic Theory Polka  Dalton, Thomson, Rutherford and Bohr. Schrödinger and Heisenberg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

 Dalton did experiments and said, “I think it’s clear, atoms are tiny indestructible spheres.”

 Thomson worked with cathode rays and said, “I disagree. A plum-pudding model makes much more sense to me.”

 A new chapter in atomic theory started to unfold when Rutherford played around with atoms made of gold. When a few of his alpha particles came bounding back, he hypothesized a nucleus had knocked them off the track.

 Dalton, Thomson, Rutherford and Bohr. Schrödinger and Heisenberg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

 Bohr saw spectral lines for hydrogen and said, “It seems to me.. Electrons move in orbits with specific energies.”

 Heisenberg said, “Forget it, there’s no way to know the orbit or a path, where the electron’s gonna go.”

 Schrödinger used lots and lots of fancy mathematics, and made a model of the atom based on quantum mechanics. It has orbitals and those are based on probability. The atom is a fuzzy blob of pure uncertainty.

 Dalton, Thomson, Rutherford and Bohr. Schroedinger and Heisenburg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

Read 4.2 – 4.3 in a 6 inch voice  Fill out the study guide as you read in complete sentences.  Use your own words! It will help you to remember more.

Atomic Theory Part II Date:

JJ Thomson  Found electron  Used cathode ray tube  “Plum Pudding” or “Chocolate Chip Cookies” model

Robert Millikan  Determined the electrical charge of electron  “Oil Drop Experiment”  Still plum pudding model

Eugen Goldstein  Found the proton  Reverse cathode ray tube  Still plum pudding model

Ernest Rutherford  Found nucleus  Gold foil experiment  Atom is mostly empty space – first nuclear model

James Chadwick  Found neutron  Shot alpha particles at Be nucleus  Nucleus is made of two particles Positive protons Neutral neutrons

Niels Bohr  Planetary model  Proposed electrons have a set amount of energy putting them in different energy levels, or orbits around the nucleus.  Electrons can change energy levels; higher energy levels are further from the nucleus.

Heisenberg’s uncertainty principle  Heisenberg’s uncertainty principle: cannot know exactly both the velocity and position of electron at the same time.  Like trying to catch a helium balloon in the dark.

Schrödinger  Electron cloud gives a 90% probability of finding the electron within the darkly shaded area.  Electrons move like moths around a light – unpredictable.

Homework  Last element quiz FRIDAY!