quiz 2

Question 1

Name the discovery that led to scientists moving from the Dalton model to the plum pudding model

Answer 1

The discovery of the electron

Question 2

Describe at least 2 features of the Dalton model of the atom

Answer 2

Atoms are indivisible
Atoms are spherical

Question 3

State what caused scientists to move from one model of the atom to another

Answer 3

Experimental evidence

Question 4

Described at least 2 features of the Bohr(electron shell) model of an atom

Answer 4

Electrons orbit the nucleus at specific distances
atoms have a positive nucleus

Question 5

Name the 4 main historical models of the atom in chronological order

Answer 5

Dalton, plum pudding,nuclear and electron shell(Bohr)

Question 6

Name 2 characteristics of atoms proved by the gold foil experiment

Answer 6

The mass of an atom is concentrated in a nucleus
the nucleus has a positive charge

Question 7

Describe at least 2 features of the nuclear model of the atom

Answer 7

Atoms are mostly empty space
mass is concentrated in the nucleus

Question 8

Describe at least 2 features of the plum pudding model of the atom

Answer 8

negative electrons are embedded in the atom
positive charge is spread out across the atom

Question 9

State what Chadwick discovered

Answer 9

The neutron