Inside The Atom- Sub-atomic Particles

Question 1

What do you have to do to work out the mass of an atom?

Answer 1

You add together the number of Protons and Neutrons.

Question 2

What two charges in an atom cancel each other out and why?

Answer 2

Protons and Electrons because in an atom it has equal numbers of protons and electrons.

Question 3

Neutrons have no charge and are neutral.

Is this true or false?

Answer 3

True.

Question 4

What two things do Sub-atomic Particles have?

Answer 4

A charge and a mass.