Revision notes

Question 1

Forces within an atom to keep its structure

Answer 1

electromagnetic force which keeps negative charges bound to positive charge

Question 2

another force is strong nuclear

Answer 2

this force keeps the protons and neutrons bound within the nucleus

Question 3

radioisotope is defined as what

Answer 3

radioactive isotopes of an element

Question 4

what happens in beta decay

Answer 4

a neutron converts into a proton and also produces an electron and antineutrino.its an electron

Question 5

what is latent heat

Answer 5

amount of energy required to melt or freeze an object

Question 6

what is latent heat of vaporisation

Answer 6

Latent heat of vaporisation is the same as for fusion but relates to the material’s boiling point (phase change between liquid and gas)