History of Atomic Structure

Slides:

Advertisements

Similar presentations

History of Atomic Structure

Advertisements

 Warm-Up: Atom Probe  Classwork: Atom notes; Create a Timeline  Homework: The Atoms Family Album (Glue In)

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.

History of Atomic Theory

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.

History of Atomic Structure

Atomic Theory: A Timeline More than 2000 years ago ancient philosophers had theories on matter BC - Democritus believed that matter was made of.

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

History of Atomic Theory

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.

How long have people been interested in understanding matter and its structure? Thousands of years Hundreds of years A few years Never.

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago (400 B.C.) Where: Greece What: Aristotle believed.

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.

History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.

BY Dhruv Rana, Miguel Rivas, Cristian Tapia.  More than 2000 years ago  Were from Greece  Aristole believed in four elements: Earth, Water, Wind, Fire.

By: Jeremy Aponte, Javier Candelaria, Eric Mendoza.

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

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

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.

History of Atomic Structure. Aristotle Democritus.

Bellwork10/12/06 How long have people been interested in understanding matter and its structure? A.Thousands of years B.Hundreds of years C.A few years.

Bellwork08/20/2012 How long have people been interested in understanding matter and its structure? A.Thousands of years B.Hundreds of years C.A few years.

The Atomic Theory – p Democritus  Democritus, 440 B.C.  Thought matter was made of tiny particles  Believed these particles could not be cut.

Scientists and Their Contribution to the Model of an Atom

The structure of an atom…

Unit 3 Development of the Modern Atomic theory Democritus & Dalton Schrodinger Rutherford Thomson Bohr.

Atomic Theory “History of. . . ”.

The evolution of the atom

The History of Atomic Theory

Historical Development of an Atom

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

Theories of the Atom.

Atomic Theory and Developing an Atomic Model

Early Atomic Theories and the Origins of Quantum Theory 3.1 and 3.2

Bellwork 10/12/06 How long have people been interested in understanding matter and its structure? Thousands of years Hundreds of years A few years Never.

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

History of Atomic Structure

Evolution of the atomic model

Atoms: Development of the Atomic Theory

Introduction to Atoms Chapter 11.

Section 1 Development of the Atomic Theory

Theories of the Atom.

History of the Atom Block 2 - Downey.

Atomic Theory Review.

Introduction to Atoms Chapter 11.

Unit 3: Chemistry. Development of the Atomic Theory.

1.3 Atomic Theory.

Section 2.1 The History of Chemistry

1.3 Atomic Theory.

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

1.3 Atomic Theory.

(c) McGraw Hill Ryerson 2007

Discovering the Atom.

Early Atomic Theories and the Origins of Quantum Theory 3.1 and 3.2

Development of Atomic Structure

Write down three examples of any elements you remember.

4.1 Studying Atoms Democritus believed that all matter consisted of extremely small particles. Democritus called these particles atomos (Greek for atoms)

Atomic Structure.

Greek Philosophers Aristotle

Matter Anything that has mass and takes up space.

Get Ready! Materials Today’s Agenda 5-in-5 Atomic Theory Video

Development of Atomic Structure

Atomic Structure.

Bell work Challenge Winning Group Will Earn +10 Test Points

Who said the elements are earth, water, air, & fire?

(c) McGraw Hill Ryerson 2007

(c) McGraw Hill Ryerson 2007

Presentation transcript:

History of Atomic Structure

Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4 elements: Earth, Air, Fire, and Water. Democritus believed that matter was made of small particles he named “atoms”. Why: Aristotle and Democritus used observation and inferrence to explain the existence of everything.

Democritus Aristotle

Alchemists Who: European Scientists When: 800 – 900 years ago Where: Europe What: Their work developed into what is now modern chemistry. Why: Trying to change ordinary materials into gold.

Alchemic Symbols

Particle Theory Who: John Dalton When: 1808 Where: England What: Described atoms as tiny particles that could not be divided. Thought each element was made of its own kind of atom. Why: Building on the ideas of Democritus in ancient Greece.

Atom Spheres John Dalton

Discovery of Electrons Who: J. J. Thompson When: 1897 Where: England What: Thompson discovered that electrons were smaller particles of an atom and were negatively charged. Why: Thompson knew atoms were neutrally charged, but couldn’t find the positive particle.

Plum Pudding model J. J. Thompson

Atomic Structure I Who: Ernest Rutherford When: 1911 Where: England What: Conducted an experiment to isolate the positive particles in an atom. Decided that the atoms were mostly empty space, but had a dense central core. Why: He knew that atoms had positive and negative particles, but could not decide how they were arranged.

Nuclear model Ernest Rutherford

Atomic Structure II Who: Niels Bohr When: 1913 Where: England What: Proposed that electrons traveled in fixed paths around the nucleus. Scientists still use the Bohr model to show the number of electrons in each orbit around the nucleus. Why: Bohr was trying to show why the negative electrons were not sucked into the nucleus of the atom.

Planetary model Niels Bohr

Electron Cloud Model Schrodinger 1926 Electron sub shells Pairs of electrons travel around the nucleus in random orbits. Scientists cannot predict where they will be at any given moment. Electrons travel so fast, they appear to form a “cloud” around the nucleus.

Electron cloud