(a(i))[2]
Give the names of the changes of state shown by P and Q.
(a(ii))[4]
Using the kinetic particle model, describe how far apart the particles are and how they move in water when it is a liquid and when it is a vapour.
(b(i))[2]
Balance the chemical equation for this reaction. …Li + …H$_2$O → 2LiOH + H$_2$
(b(ii))[1]
Give the name of the product that makes the solution alkaline.
(c(i))[2]
State the products of this electrolysis at: the positive electrode (anode); the negative electrode (cathode).
(c(ii))[1]
What observation is seen at the electrodes?
(c(iii))[1]
Suggest one reason why graphite is used for the electrodes instead of magnesium.