Historical people science atomics Flashcards
1
Q
John dalton time period and theory
A
1803, everything was made up by atoms, which were solid invisible spheres unable to be destroyed.
2
Q
JJ Thompson
A
1897, all atoms contain tiny negatively charged atoms called electrons, ie. Plum pudding model.
3
Q
Rutherford
A
1960, atoms have a central positively charged core called the nucleus which is orbited by electrons similar to our solar system.
4
Q
Bohr
A
1913, Electrons orbit the nucleus in specific shells.
5
Q
Chadwick
A
1932, discovered neutrons as neutral particles devoid of any charge.
6
Q
Democritus
A
Democritus theory said that there are substances called atoms that made up all things.
