Atom Flashcards
1
Q
What is the plum pudding theory?
A
Firing dense, positively charged particles (alpha particles) at thin piece of gold
2
Q
What happened in the plum pudding experiment?
A
The protons were in the nucleus so the alpha particles went round the edge. instead the alpha particles being scattered around and the alpha particles going in between them.
3
Q
Who carried the plum pudding experiment?
A
Geiger and marsden
4
Q
What did Dalton discover?
A
Substances are made up of atoms that are like tiny, hard spheres. He also said each chemical element had its ow atom that differ from others in their mass
5
Q
What did Thompson discover?
A
Electrons are tiny, negatively charged particle.
