The three sub-atomic particles found in the atom are _________________, _______________ and __________________

Protons and neutrons are found in the _____________ and electrons are found in the _______________

Relative mass of proton

Relative mass of neutron

Relative mass of electron

Mass of proton (kg)

Mass of neutron (kg)

Mass of electron (kg)

Charge of proton (Coulombs)

Charge of electron (Coulombs)

Width of nucleus

Width of an atom

____________ forces keep the electrons in orbit around the nucleus

The proton number is the number of ________ in the nucleus

The nucleon number is the total number of __________ ____ ________ in the nucleus

Isotopes are atoms of the same _________ number but with different ________ numbers

The strong nuclear force is the force which holds _________ and ________ together inside the nucleus. It has to be strong enough to counteract the repulsion amongst the ________

Which of the three sub-atomic particles does the strong nuclear force not act on?

The strong nuclear force acts equally on all ________

The range of the strong nuclear force is about ________________

Below 1 fm the strong nuclear force is __________

Between 1 fm and 3fm the strong nuclear force is ________