In this chapter you learnt how to identify the chemical compounds, acids, bases, and salts, along with their properties and uses.

You have understood:

• How to define the terms acid, alkali, and salt, and note their characteristics and applications
• What indicators are and how to use them to identify different substances
• How to apply this knowledge to examine colour changes in vegetable and flower extracts
• How to make magnesium chloride, copper sulphate, and ammonium sulphate