Atomic theory.

Slides:

Advertisements

Similar presentations

Atomic Theory Timeline

Advertisements

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

AP Chemistry – Chapter 2 Atoms, Molecules and Ions.

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?

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

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

DALTON’S ATOMIC THEORY 1803 Read each of the following postulates and determine whether each is True or False.

Early Atomic Models Democritus –World is made of two things: empty space and indivisible particles, called atoms –There are different atoms for every material.

The Historical View of Atomic Structure Continued.

History of Atom Flip Book

The Structure of the Atom Chapter 3 Chemistry: Matter and Change.

Atom : The smallest particle of an element that keeps all the properties of that element. Lesson: Old Dead Guys.

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.

Atomic Structure Chapter 4. Dalton’s Atomic Theory 4.1 John Dalton – 18 th century All matter is composed of atoms All atoms of a given element are identical.

The Development of a Modern Theory of the Atom Aristotle Democritus.

The Atom. Dalton’s Atomic Theory 1.Elements are made of tiny particles called atoms. 2.All atoms of a given element are identical. 3.The atoms of a given.

1 The Structure of the Atom. 2 Early Theories of Matter.

1 Chapter 4 Atoms and Elements 4.3 The Atom Basic Chemistry Copyright © 2011 Pearson Education, Inc.

Discussion: Three Atomic Models of the Atom. Some people believe that theories never change. That isn’t true. Theories change until we get it right. The.

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.

The History of the Atom Democritus to Rutherford.

Introduction to Atomic Structure. Dalton’s Atomic Model (early 1800’s) Matter made of atoms Matter made of atoms All atoms of given element are identical.

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.

Smallest particle of an element that retains the properties of the element.

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

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

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

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

Atomic Structure- Ch 4. Daltons Atomic Theory 1. All elements are composed of tiny indivisible particles called atoms. 2. Atoms of the same element are.

4.3 The Atom An atom is the smallest particle of an element that retains the characteristics of that element. Aluminum foil contains atoms of aluminum.

Aim: Models of the Atom.

3.1 What is the history of the atom?

Chapter 4 review.

How we got to where we are now

Elements, Atoms, and Ions

1803 John Dalton Father of the Modern Atomic Theory

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

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

Ch. 4 Atomic Structure 4.1 Defining the Atom.

1803 Key words John Dalton Father of the Modern Atomic Theory.

Origin of the idea of atom…

Atomic Theory and Developing an Atomic Model

Atoms! What is matter made of?.

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

Atomic Theory and the Modern Atom

Origin of the idea of atom…

Chapter 3- Atomic Structure

Origin of the idea of atom…

Subatomic Particles. Subatomic Particles Definitions.

Atomic Structure Ch. 4.

Atomic Theory A Brief History.

Research Hypothesis Theory An educated guess based on an observation

Early History of the Atom

2.1 History of the Atom Objectives S1 and S2

4.1 & 4.2 Early Theories & Subatomic Particles

Chapter 4 Atoms and Elements

The atom Chapter 4.

Chapter #3 Atoms: The Building Blocks of Matter Chapter 3A ATOMS:

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

CH 3 Atoms: The Building Blocks of Matter 3

ATOMIC STRUCTURE.

Atomic Structure.

Section 4.1 and 4.2 Atomic Theory.

Atomic Structure.

Honors Coordinated Science II Wheatley-Heckman

Presentation transcript:

Atomic theory

John Dalton-Atomic Theory All matter consists of atoms, tiny indivisible particles of an element that cannot be created or destroyed. Atoms of one element cannot be converted into atoms of another element. In chemical reactions, the atoms of the original substances recombine to form different substances Atoms of an element are identical in mass and other properties and are different from atoms of any other elements. Compounds result from the chemical combination of a specific ratio of atoms of different elements.

J.J. Thomson – Cathode Rays Discovered 1st subatomic particle-electron

Milikan’s Oil Drop Experiment

Plum Pudding Model - Thomson Atom made of jelly-like substance that is positively charged. Electrons spread throughout jelly-like material.

Gold Foil Experiment - Rutherford

Periodic Table

Periodic Table