(a(i))[1]
Which term is used for the random movement of the dust particles?
(a(ii))[2]
Identify the air particles that make the dust particles move randomly.
(a(iii))[2]
Explain why the dust particles travel in this way.
(b(i))[1]
What term is used for the way the gas particles spread out?
(b(ii))[2]
Use Periodic Table data to explain why bromine gas needs more time than chlorine gas to fill a gas jar.
(b(iii))[1]
Explain why raising the temperature increases the rate at which the gas particles spread out.