atoms Flashcards
1
Q
what is the positive nucleus surrounded by? discovered by who?
A
Positive nucleus (protons and neutrons) surrounded by negative electrons in shells, discovered by Rutherford.
2
Q
what did Rutherford discover?
A
Rutherford disproved plum pudding model by firing alpha particles at gold foil. The wide scattering pattern suggested the nucleus
3
Q
how can electrons jump to a high energy level?
A
Electrons can jump to a higher energy level (further from the nucleus) with absorption of electromagnetic radiation
