discoveries

Question 1

J.J Thompson

Answer 1

discovered the electron, made the plum pudding model

Question 2

Democritus

Answer 2

Atomic theory that all things are made up of atoms.

Question 3

Ernest Rutherford

Answer 3

Used gold foil experiment to prove plum pudding model wrong by firing alpha particles at gold foil. some deflected and some went through. this discovered the nucleus

Question 4

Niels Bohr

Answer 4

Discovered energy levels, and that electrons orbit the positive nucleus at fixed distances from nucleus