past paper notes- capacitance

Question 1

Suggest why when the capacitor is connected across the terminals of a battery, the capacitor stores energy not charge? /2

Answer 1

equal and opposite charges on the plates so resultant charge is zero

+ve and -ve charges separated so energy stored

Question 2

Define the capacitance of a capacitor? /2

Answer 2

ratio of charge on one of the plates to the potential difference
between the plates