nuclear radiation

Question 1

what is an atom made up of and what are the charges of the particles

Answer 1

protons (+1) neutrons (0) electrons (-1)

Question 2

what is the mass of protons, neutrons and electrons

Answer 2

proton=1, neutron=1, electron=almost 0

Question 3

what is the definition of ionisation

Answer 3

the gain or loss of electrons from an atom

Question 4

what are the 3 types of radiation from most to least ionising

Answer 4

alpha α, beta β, gamma γ

Question 5

what is each type of radiation absorbed by

Answer 5

alpha by paper, beta by a few mm of aluminium, gamma partially by few cm of lead