4.7 Describe experiments to prepare soluble salts from acids

You could do the following:

• Add an excess of sulphuric acid to a metal (let's say zinc) 
• Watch it react
• Filter off the excess zinc
• Heat the solution gently for about 2 minutes
• Put aside, leave to cool until crystals form
• Dry between bits of filter paper

Sulphuric acid + zinc → Zinc sulphate + hydrogen

This is what zinc sulphate looks like :)