Y10 Atomic Structure

Question 1

The number of protons and neutrons equals what?

Answer 1

The mass number of an atom

Question 2

Isotopes of an element have ?

Answer 2

Different numbers of neutrons

Question 3

Which scientist proposed the plum pudding model for the atom?

Answer 3

J.J Thompson

Question 4

Draw and label the plum pudding model

Answer 4

positive circle with negative electrons

Question 5

Give the relative mass of a proton, neutron and electron

Answer 5

Proton - 1
Neutron - 1
Electron 1 / 1840

Question 6

Give the relative charge of a proton, neutron and electron

Answer 6

Proton - +1
Neutron - 0
Electron - -1

Question 7

How do you work out the number of neutrons?

Answer 7

It’s equal to its mass number