(a(i))[1]
State which substance in the list is an alkane.
(a(ii))[1]
State which substance, after acidification, is used to test for sulfur dioxide.
(a(iii))[1]
State which substance turns blue litmus paper red.
(a(iv))[1]
State which substance reacts with sodium to give only aqueous sodium hydroxide and hydrogen.
(a(v))[1]
State which substance is formed when steam is added to ethene.
(b(i))[2]
State the names of the changes of state shown by A and B.
(b(ii))[4]
Use the kinetic particle model to describe how the particles move and how far apart they are in liquid mercury and mercury gas.