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OCR (KS4)

KS3 & KS4 science curriculum

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Exam subject (KS4)

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Science
Year 9

Acids and bases

7 lessons

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  • BQ06 Chemistry: How do we explain how substances behave?
  • BQ08 Chemistry: How can substances be made and changed?

Description

This unit covers acids, alkalis, and their neutralisation reactions, the pH scale, and the reactions of acids with metals and alkalis. It also examines the chemical properties of metal and non-metal oxides. Emphasis is on evaluating risks, using appropriate techniques, and making observations.

This unit builds on pupils’ prior learning from Understanding chemical reactions, where they explored how substances interact and transform during chemical processes. It deepens their understanding by examining the properties of acids and bases, their reactions, and the concept of pH. This prepares pupils for the next unit, Making salts, where they will apply their knowledge of acid-base reactions to create different salts, reinforcing the practical application of chemical reactions and enhancing their understanding of chemical processes.

  1. Acids and bases
  2. pH scale and universal indicator solution
  3. Practical: red cabbage indicator solution
  4. Chemical reactions: acid and metal
  5. Metal oxides and non-metal oxides
  6. Chemical reactions: neutralisation
  7. Chemical reactions: acid and metal carbonate

  • Some solids can dissolve to form solutions.
  • New materials are formed as a result of a chemical reaction.
  • One group (or class) of chemical substances is called acids.
  • In a chemical reaction, atoms rearrange themselves to form new substances
  • Word equations are a simple way of describing chemical reactions
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