Development of the atomic model Flashcards
1
Q
What were 2 features of John Dalton’s atomic model?
A
Atoms were tiny,
indivisible spheres.
2
Q
What did JJ Thompson discover that led to his development of the plum pudding model?
A
Electrons.
3
Q
What are 2 things Rutherford discovered about the atom during the alpha particle experiment?
A
The mass of an atom is concentrated at its centre, the nucleus.
The nucleus is positively charged.
4
Q
What did Bohr discover about the atomic model after Rutherford?
A
Electrons orbit the nucleus in electron shells at certain distances.
5
Q
What did Rutherford discover about the atomic model after Bohr’s development?
A
Protons.
6
Q
What did Chadwick discover about the atomic model after Rutherford’s discovery of protons?
A
Neutrons.
