atomic structures

Question 1

what are atoms?

Answer 1

the smallest particle of an element

Question 2

the plum pudding model:

Answer 2

1909, ernest rutherford fired alpha particles at thin gold foil. some went through some scattered.

Question 3

nuclear model:

Answer 3

neils bohr adapted ernest’s model, and suggested that electrons orbit the nucleus in shells.

Question 4

james chadwick

Answer 4

1932 he found evidence that for the existence of particles in the nucleus with mass it no charge. these particles are called neutrons.