The History of the World

Slides:

Advertisements

Similar presentations

History of the Atomic Theory.

Advertisements

Atomic Theorists How we got to where we are now. Law of Conservation of Mass Matter can’t be created or destroyed Who: Antoine Lavoisier When: 1785 Where:

THE HISTORY OF THE ATOM. Greek Philosophers (400 B.C.)  Aristotle- believed the everything was made of the 4 elements (air, fire, water, and land). Each.

AP Chemistry – Chapter 2 Atoms, Molecules and Ions.

History Democritus - First to use the term atom Democritus - First to use the term atom Aristotle - Defined matter as composed of hot, cold, wet and dry.

History of Chemistry and Atomic Structure Unit 3.

Chapter 4: Atoms and Elements.  Recognize that all matter is composed of atoms.  Explain the early ideas that led to the current understanding of the.

Courtesy: B.C. – Matter was composed of four fundamental substances: fire, earth, water, and air. Greeks considered whether matter.

The History of the World From a “chemist’s” view.

A Brief History of Chemistry

History of Atom Flip Book

Development of Atomic Theory Unit 2 Chapter 4, Section 1.

Bell Ringer 1.Get a piece of paper and fold it so that you have three columns 2.On one column you will write what you already know about the structure.

Law of Conservation of Mass Who: Antoine Lavoisier Matter can't be created or destroyed When: 1785 Where: France.

Dalton’s Atomic Theory. Law of Conservation of Mass The total mass of materials after a chemical reaction is the same as the total mass before the reaction.

Atomic Theory Story of the Atom. Our Story Begins…. Many years ago 400 B.C. In a land far away.

Do Now Determine the stationary object in the middle of the box without peaking in the box.

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 The Early History of Chemistry 4 Greeks 400 B.C. - Four fundamental substances – fire,

(greek for indivisible)

Bell Ringer Get a piece of paper and fold it so that you have three columns On one column you will write what you already know about the structure of atoms.

The Early History of Chemistry

THE HISTORY OF THE ATOM.

Atomic Structure Scale of the Universe.

How we got to where we are now

Matter --- Properties and Changes

The History of the World

Atomic Theory Label the 3 different particles that make up an atom

Part 1 – The concept of the Atom

Do Now Determine the stationary object in the middle of the box without peaking in the box.

The Periodic Table. The Periodic Table Chemical Bonds Covalent Bonds Bonds formed when atoms share electrons. Ionic Bonds Bonds formed by the attraction.

Origin of the idea of atom…

Unit 1 – Atomic Structure

Atomic Structure.

Chapter 4: The Structure of the Atom 4.1 The Structure of the Atom

Atomic Theory Timeline

LT1: Atomic Structure NOTES

History of Chemistry.

Early Chemical History

Atoms, Molecules, and Ions Chapter 2

Models of the Atom a Historical Perspective

Chapter 4 History of the atom

ATOMS The word atom comes from the Greek atomos, meaning “indivisible.” An atom is the smallest identifiable unit of an element. There are about 91 different.

Atomic Theory and the Modern Atom

Pre-AP Chemistry Atoms: The Building Blocks of Matter.

Chapter 3- Atomic Structure

Atomic Theory A Brief History.

The History of The Atomic Theory

Early Ideas About Matter

The Modern Nuclear Atom

Chapter 4: Atomic Structure

2.1 History of the Atom Objectives S1 and S2

Development of Atomic Structure

Models of the Atom a Historical Perspective

Models of the Atom a Historical Perspective

Atomic Theory Timeline

LT1: Atomic Structure NOTES

History Democritus - First to use the term atom

A Historical Perspective

What Are Elements? Crash Course Kurzgesagt

Atoms, Molecules, and Ions

CHAPTER 3 – The Structure of the Atom

Development of Atomic Structure

Discovery of the Atom.

History of the Atom.

Chapter 2 Atoms, Molecules, and Ions

Presentation transcript:

The History of the World From a “chemist’s” view

The Father of Atomic Theory? Democritus Atoms ~400’s BCE

Aristotle Earth Wind Fire Water

All substances were combinations of elements and elemental qualities. The elements are: fire, water, earth, and air. (Aristotle added later another "element" - Ether which was a perfect substance an what the heavenly bodies are composed of) The qualities are: hot, cold, wet, dry. The qualities define the character of "elements". Fire was seen as ideal mixture of hotness & dryness. One element could be changed into another like mixing solutions.

What is this guy’s occupation?

Something went wrong! click here to explore Alchemy

Copernicus

Galileo

George Stahl Charcoal leaves little residue upon burning because it is nearly pure phlogiston. Mice die in airtight space because air saturates with phlogiston. When heated, metals are restored because phlogiston transferred from charcoal to calx Metals get heavier when heated because phlogiston has a negative mass..

Joseph Priestly Discovered dephlogisticated air Contemporary of Franklin and Jefferson Isolated eight kinds of “airs.”

"Nothing is lost, nothing is created, everything is transformed "Nothing is lost, nothing is created, everything is transformed." Antoine-Laurent de Lavoisier Law of Conservation of Matter In what historical event did he die? FATHER OF MODERN CHEMISTRY!!

John Dalton elements consisted of tiny particles called atoms. all atoms of an element were identical and that in particular they had the same mass. atoms of each element were different from one another; in particular, they had different masses. compounds consisted of atoms of different elements combined together. Compounds have constant composition because they contain a fixed ratio of atoms chemical reactions involved the rearrangement of combinations of those atoms.

Law of Multiple Proportions When two elements form two different compounds, the ratio of the mass one element in compound A to that of the same element in compound B, will occur in small whole numbers.

Goldstein

J J Thomson Cathode Rays Cathode Rays are electrons

J.J. Thomson in his study (1899) JJ at 78

THE EXPERIMENT

Earnest Rutherford How can we describe the inside of an atom?

Robert Millikan The Oil Drop Experiment

The END NEXT How are the electrons arranged?