Tony+Belobrajdich

IM A **G6**

John Dalton (1766-1844)



he was meteorologist and then changed to chemistry. He proposed the "//Atomic Theory"// in 1803 which stated that all matter was composed of small indivisible particles termed atoms, atoms of a given element possess unique characteristics and weight, and three types of atoms exist elements, simple molecules, and complex molecules. This work identified chemical elements as a specific type of atom, throwing out Newton's theory of chemical affinities. Dalton lived in England.

History of the Atom (5pts) [] . ﻿[]
 * Find out the important scientists who contributed to our current knowledge of the atom. Include:
 * A picture.
 * When they lived.
 * What they did.
 * Find out the important experiments that were used to make breakthrough discoveries.
 * Who perfomed these experiments?
 * Include years of each discovery/experiment so we can get an idea of how long this process has taken.
 * 1) Atomic Structure (5pts)
 * What are the different parts of the atom?What are the different particles that make up the atom?
 * Where are they located?
 * What makes atoms of different elements different?