The Atom. Aristotle – the four basic elements -Earth -Air -Water -Fire.

Slides:

Advertisements

Similar presentations

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

Advertisements

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 Atom Flip Book

History of the Atom. Democritus (400 BC) Proposed that matter was composed of tiny, invisible particles. Gr. atomos.

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

THE HISTORY OF THE ATOMIC MODEL. DEMOCRITUS 460 B.C. TO 370 B.C. All matter consists of extremely small particles that cannot be divided. Called them.

Atoms- Basic Units of Matter. The atom Parts of an atom: – Protons: positively charged particles; located in the nucleus – Neutrons: particles with no.

Atomic Structure.

Integrated Chemistry and Physics

Democritus/Leuccippos 400 BC

Chapter 4 review.

How we got to where we are now

4.1 Studying Atoms Atomic Theory

Early Models of the Atom

Atoms: The building blocks of matter

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

History of the ATOM Once Upon a Time ….

The evolution of the atom

The History of Atomic Theory

Origin of the idea of atom…

Unit 1 – Atomic Structure

Atomic Theory and Developing an Atomic Model

How did the atomic model come about?

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

Atomic Theory Timeline

The Development of the Theory on the Atom

Origin of the idea of atom…

Chapter Four The Structure of the Atom (p )

1.3 Atomic Theory.

Discovery of the Atom.

Origin of the idea of atom…

Subatomic Particles. Subatomic Particles Definitions.

Section 2.1 The History of Chemistry

BELLWORK 9/11/17 What is the atom?

Atomic Structure Ch. 4.

The Structure of the Atom

Atomic Theory A Brief History.

1.3 Atomic Theory Early ideas about matter

Unit 2 - Lecture 1: Structure of the Atom

The Modern Nuclear Atom

Discovering the Atom.

Chapter 4: Atomic Structure

Research Hypothesis Theory An educated guess based on an observation

Early History of the Atom

1.3 Atomic Theory.

Models of the Atom a Historical Perspective

Atomic Theory Timeline

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

ATOMIC STRUCTURE.

Atomic Structure.

Greek Philosophers Aristotle

History of the Atom.

Atomic Structure An atom is the smallest particle of an element that retains its identity in a chemical reaction. Although early philosophers and scientists.

Building blocks of matter

You think you know, but do you???

Atomic Theories.

Development of Atomic Structure

Democritus and Leucippus

History of the Atom.

Atomic Structure.

Chapter 3: Atomic Theory

The Structure of the Atom

Honors Coordinated Science II Wheatley-Heckman

Presentation transcript:

The Atom

Aristotle – the four basic elements -Earth -Air -Water -Fire

Democritus -Follower of Leucippus -An Atomist -Coined the word atomos meaning uncuttable or the smallest particle of matter

2000 years later John Dalton – School Teacher Five main points of Dalton's atomic theory -The atoms of a given element are different from those of any other element; the atoms of different elements can be distinguished from one another by their respective relative atomic weights. -All atoms of a given element are identical. -Atoms of one element can combine with atoms of other elements to form chemical compounds; a given compound always has the same relative numbers of types of atoms. -Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together. -Elements are made of tiny particles called atoms.

Daltons Model of the Atom

Cathode Ray Tube

Plum Pudding Model of the Atom JJ Thompson

Gold Foil Experiment – Ernest Rutherford

Rutherford’s Model of the Atom

ParticleSymbol Relative ChargeMass (kg) Mass NumberLocation electrone-e x Around Nucleus protonp+p x Nucleus neutronn0n x Nucleus

Atomic Number: The number of protons in the nucleus of an atom Mass Number: The total number of protons and neutrons on a nucleus Atomic Number Symbol Atomic Mass

Isotope: Atoms of the same element that have different masses