I. Atomic History A.Democritus (460-370 BC) 1.Ancient Greek philosopher 2.Proposed matter was made of tiny indivisible particles 3.He called them atoms.

Slides:

Advertisements

Similar presentations

CHAPTER 18 ATOMS AND ELEMENTS

Advertisements

Democritus Dalton 3. JJ Thomson 4. Rutherford 5. Bohr 6. Chadwick

A History of the Atom A long time to study a little thing.

Atomic Structure. What is an Atom? The smallest part of an element.

Atomic Theory and the Atom

Development of the Atomic Theory

9/10/12 Atom and the History of the Atom

EARLY MODELS OF THE ATOM

History of Atomic Structure

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

Atom Models From Democritus to Bohr’s.

Unit: Atomic Structure

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.

Chapter 4: Discovery of Atomic Structure. Prentice Hall © 2003Chapter 2 The Discovery of Atomic Structure An ancient Greek named Democritus was the first.

History Behind the Atomic Theory

Chapter 4.1 – The Development of Atomic Theory 1.Democritus – - Greek philosopher, 4 th century BCE - suggested universe was made of indivisible units.

Atomic Structure History and Theories. The Greeks 4 th century B.C. Democritus “Atomists” school of thought Matter is composed of tiny indivisible particles.

TITLE The Development of Atomic Theory. Early Ideas Democritus—Greece 400 B.C. His idea:  There was a limit to how far you could divide matter. You would.

Chapter 4: Atomic Structure

NOTES – Introduction to Atomic Theory ( )

Chapter 2 Notes Atomic Structure. Atoms Democritus – Ancient Greek Science dude, 1 st proposed the idea of atoms, tiny indivisible particles Atomos –

Discovery of the Atom. Democritus  Democritus was an ancient Greek who had a philosophical idea of an atom.  His approach was not based on the scientific.

Atomic Structure. Way Early Theories Democritus ( BC) –First person to propose that matter is not infinitely divisible –Atomos –Matter is empty.

Development of Atomic Structure How long have people been interested in understanding matter and its structure? A.Thousands of years B.Hundreds of years.

What is an atom??? An atom is the smallest particle of an element that retains its identity in a chemical reaction.

Atomic Model History.

Atomic Structure. 1. Democritus: Around 300 BC, a Greek philosopher, Democritus stated that everything is made up of tiny, invisible particles He said.

1.3 Atomic Theory 1. John Dalton’s atomic theory - Matter is made up of small particles called atoms - Atoms cannot be created, destroyed or divided.

The Modern Nuclear Atom How did our concept of the atom come about, and how did it develop?

GSCI 163 Lecture 2. Atomic theory What are things made of? Imagine dividing an object into smaller and smaller units. Is there a limit to how much we.

Do Now: Solve the following using the correct number of significant figures. 1)7.76 m m = 2)5.750 cg cg = 3)5555 kg kg = 4)1.23 m x 3.2.

Do Now: 1.On the blank side of an index card, draw a picture of an atom. 2.On the other side of the index card, write down things that you know about atoms.

History of Atomic Theory

O We use models to help us understand things that are too: BIG small Fast s l o w or complicated to see in “real life”

History of Atoms By: Layan Suleiman 7A.

A Brief History of the Atomic Theory. 460 B.C. : Democritus Greek Philosopher Proposed that matter cannot be broken down indefinitely At some point you.

The History of the Atom.

Atomic Theory Democritus to Rutherford. Democritus - Ancient Greece w Philosophical question: Could matter be divided into smaller and smaller pieces.

Brief History of Atomic Theory. 1 st atomic models In 400 BC, the model looked like a solid indivisible ball In 400 BC, the model looked like a solid.

Chemistry What is chemistry? –Chemistry is the study of matter, what it is made of, and how it changes. What is matter? –Matter is anything that… Has.

ATOMS!. Early models of the atom The existence of the atom was first proposed by Democritus of Abdera who lived in Greece during the 4th century B.C.

Historical Development of an Atom. Democritus B.C Democritus was a Greek philosopher ( B.C.) who is the father of modern atomic thought.

ATOMIC THEORY. WHAT IS AN ATOM? What makes the elements on the Periodic Table different from each other? What is the name for the center of an atom? What.

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.

Atomic Structure Section 4-1. Democritus Greek philosopher 4 th Century BC First to come up with “atom”. Matter is composed of tiny particles called atoms.

Atomic Structure. Early Theories of Matter Democritus ( BCE) Democritus ( BCE) Greek philosopher Greek philosopher First to propose the.

 Democritus (~400 BC) Greek philosopher who proposed that matter was made of tiny individual particles called “atomos” Believed atoms were indivisible.

Atomic History and Theories

The structure of an atom…

History of the ATOM Once Upon a Time ….

Atomic History and Theories

The evolution of the atom

The History of Atomic Theory

You will have 3 minutes so work as fast as you can

SCH3U Unit 1: Matter, Chemical Trends and Chemical Bonding

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

Chapter 4 Atomic Structure 4.2 Structure of the Nuclear Atom

Atomic Theory A Brief History.

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

Do First Actions: Turn in yesterday’s electron, proton, and neutron practice if you did not get it stamped Questions: If a neutral atom has an atomic mass.

Research Hypothesis Theory An educated guess based on an observation

Early History of the Atom

(AKA The Dead Dudes of Atomic Theory)

Development of Atomic Structure

SCH3U Unit 1: Matter, Chemical Trends and Chemical Bonding

Chapter 4 Atoms.

The History of the Atom.

Presentation transcript:

I. Atomic History A.Democritus ( BC) 1.Ancient Greek philosopher 2.Proposed matter was made of tiny indivisible particles 3.He called them atoms

B. John Dalton ( ): 1. Teacher and amateur scientist 2. Proposed Dalton’s Atomic Theory a. Everything is made of atoms which are indestructible b. Atoms of the same element are identical c. Compounds are made of 2 or more atoms d. Chemical reactions are rearrangements of atoms

C. J.J. Thomson ( ) 1. Discovered electron in Proposed a model of the atom 3. It looked like a bunch of negatively charged raisins sitting in some pudding

D. Ernest Rutherford ( ) conducted experiment with gold foil and alpha particles 2. Lead to discovery of atomic nucleus and protons 3. Proposed more familiar model of atom

E. James Chadwick ( ) 1. Discovered neutron in Later worked as head of English team on the Manhattan Project