Discovery of the Atom.

Slides:

Advertisements

Similar presentations

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:

Advertisements

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

Democritus Occupation: Philosopher Dates of Discovery: 460 – 370 B.C. What was Discovered: That the world is made up of empty space and tiny particles.

Development of the Atom Model

The Development of Atomic Theory Chapter 4.1 Notes.

DEMOCRITUS ~ 460 BC 2000 years ago Democritus and Leucippus suggested all matter was made up of tiny invisible, indestructible particles. These particles.

Chapter 3 Notes (rev. 10/14/09). Democritus Democritus was a Greek philosopher who “…was one of two founders of ancient atomist theory”. “The atomists.

Atomic Theorists The ‘Who’s Who’ of the atomic world.

(greek for indivisible)

Chemistry – Oct 24, 2016 P3 Challenge- Objective –

THE HISTORY OF THE ATOM.

How we got to where we are now

Elements, Atoms, and Ions

The development of the scientific model of the atom.

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

History of the ATOM Once Upon a Time ….

Chemistry – Oct 26, 2017 P3 Challenge- Objective –

The History of Atomic Theory

Origin of the idea of atom…

Atomic Theory and Developing an Atomic Model

Do Now Turn in Webquest/Timeline, etc if you did not turn it in to the sub. Agenda for today: go over atomic history and structure.

Atomic Theory Timeline

And Now, Let’s Talk About Dead Guys

History of the discovery of Atomic Structure

Atoms: Development of the Atomic Theory

Bell Ringer We mentioned the Periodic Table of __________ yesterday.

Atoms: Development of the Atomic Theory

History of Atomic Theory

1.3 History of the Atom Objectives 3:a,c,d; 5

Agenda Development of Atomic Model History Atomic Structure Simulation.

Atoms: Development of the Atomic Theory

Origin of the idea of atom…

Chapter 3- Atomic Structure

The Idea of the Atom.

Origin of the idea of atom…

Chapter 2- Introduction to Atoms

Atomic Theory A Brief History.

Discovering the Atom.

Chem Today: Development of Atomic Model History.

2.1 History of the Atom Objectives S1 and S2

Chemistry – Nov 7, 2018 P3 Challenge- Objective –

Scientists & Their Contributions to the Atomic Model

Atomic Theory Timeline

History Democritus - First to use the term atom

Atomic Structure.

Chapter 4 Atoms.

Chapter 4 Atoms.

Chapter 3: Atomic Theory

The History of the Atom.

Atoms: Development of the Atomic Theory

Atoms: Development of the Atomic Theory

History of the Atom.

Presentation transcript:

Discovery of the Atom

Democritus Born in Abdera about 460 B.C. Proposed that all matter is composed of atoms

Antoine Lavoisier (1743-1794) Established the Law of Conservation of Mass which stated that matter could neither be created or destroyed

John Dalton (1776-1844) British chemist and physicist who developed the atomic theory of matter.

Dalton’s Atomic Theory Elements are composed of particles called atoms. Atoms of a given element are identical, but differ from those of any other element. Atoms are neither created or destroyed. A given compound always has the same relative numbers and kinds of atoms.

Niels Bohr (1885-1962) Proposed a planetary model of the atom saying that electrons exist in distinct orbits.

The Bohr Atom

J.J. Thomson (1856-1940) Used cathode ray tubes to discover the electron.

Robert A. Millikan (1868-1953) His earliest major success was the determination of the charge and mass of a single electron.

Ernest Rutherford (1871-1937) Determined that all of an atom’s positive charge as well as most of it’s mass was concentrated in a small core which he called the nucleus. .

Rutherford’s Model

Modern Atomic Theory The Quantum Atom