Carbon dioxide is given off when strong acids react with carbonates.
Ammonia is given off when they react with ammonium salts.
They produce hydrogen on reaction with any metal.
They have a pH greater than 7
An acid is neutralised by an alkali.
A gas is produced.
Water is produced.
Copper (II) hydroxide
P and Q
P and R
P and S
Q and R
Copper (II) oxide
They liberate (give off) ammonia when reacted with ammonium salts.
They liberate carbon dioxide when reacted with carbonates.
They produce hydrogen with any metal.
They turn Universal Indicator paper red.