An ancient Greek philosopher.

He was an influential pre-Socratic philosopher (pupil of Leucippus).

Formulated an atomic theory for the cosmos.

Believes there is a particle that is the simplest building block of matter, named "atomos" from the Greek word for "undivided."

All atomos must have size, shape and weight as well.http://edtech2.boisestate.edu/kilnerr/575/vftatom.html

Father of modern chemistry-meticulous experimenter

The end of Phlogiston

Married Marie-Anne, who was not quite 14 at the time.

Madame Lavoisier learned English to translate the work of

British chemists.

Guillotined!

Joseph L. Proust (1754, France)

When Napoleon invaded Spain, they burned Proust's laboratory and forced him back to France.

Best known for Law of Definite Proportions.http://www.vzhang.com/vzfiles/joseph_proust.htm

English chemist, meteorologist, and physicist "Atomic Theory." Its tenets are as follows:

1. Elements are made of tiny particles called atoms.2. All atoms of a given element are identical.3. Atoms of a given element are different from those of any other element. Atoms of different elements can be distinguished from one another by their respective weights.

4. Atoms of one element can combine

with atoms of another element in simple, whole number ratios to form compounds.5. Atoms cannot be created,

destroyed or subdivided.

English chemist and physicist

Contributed to the fields of electromagnestism and electrochemistry.

As a chemist, Faraday discoveredbenzene, invented an early form of the Bunsen Burner and the system of oxidation numbers.

German physicist, mathematician, astonomer, & philospher

Theory of General Relativity

Father of modern physics

American physicist

Measurement of the charge on the electron- oil drop experiment

Worked on the photoelectric effect

First to earn a Ph.D. in physics from Colombia

New-Zealand born English chemist and physicist

Father of nuclear physics Discovered the concept of radioactive

half-life Gold-foil experiment, discovery of

nucleus

Danish physicist

Worked out a picture of atomic structure

Worked on the Manhattan Project

English physicist

Discovered the neutron

Primary British scientist who collaborated in the Manhattan project