The Way Earliers Scientists Viewed Atoms

The Way Earlier Scientists Viewed Atoms

TimeLine

370 B.c

Democritus

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1803

John Dalton

1897

JJ Thomson

1908

*Discovered the electrons(corpuscles) *Claimes that atoms were streams of very small pieces of matter

#Reffered to atoms as the building blocks of matter#Believed to be infinite,indivisible and indestructible

*Claimed that atoms were uncutable pieces of matter*Claimed that they were infinite in #

*Claimed that atoms were surrounded by negative orbiting electrons,and that it had a central positive nucleus

Neils Bohr

James Chadwick

Robert Milikan

Erwin Schrodinger

Ernest Rutherford

*He claimed that atoms move around the nucleus in a particular path#Believed that electrons do not lose energy

*He conducted an oil experiment which led him to dicover the charge of an electron

#Claimed that electrons are particles and waves

*Believed that there had to be yet another particle in an atom, one that was neutral*Eventually,he discovered the neutrons