UNIT OVERVIEW

Every day, you use substances that are acids or bases. The lemon in your tea is acidic. The soap you wash with is a base. Understanding these substances helps you make sense of cooking, cleaning, medicine, and even farming.

In this unit, you will learn:

• What acids, bases, and neutral substances are
• How the pH scale measures how acidic or basic something is
• How indicators help us identify acids and bases
• What happens when acids and bases react together (neutralisation)
• How acids react with metal oxides
• How these reactions are used in everyday life

By the end, you will be able to identify acids and bases, predict what happens when they mix, and explain why these reactions matter.

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