Across
- 3. A common household liquid that contains an acid.
- 4. A type of indicator that changes colour in acids and alkalis.
- 6. A cleaning product that is usually alkaline.
- 8. A substance used to test whether a solution is acidic or alkaline.
- 13. A substance with a pH value of exactly 7.
- 15. The colour blue litmus paper turns when placed in an acid.
- 16. The colour shown by universal indicator at pH 7.
- 18. The gas produced when some acids react with metals.
- 19. The reaction between an acid and an alkali that produces salt and water.
- 20. A substance that can react with an acid to form salt and water.
Down
- 1. The colour red litmus paper turns when placed in an alkali.
- 2. One of the products formed during neutralisation.
- 5. A word used to describe an acid or alkali that reacts very easily.
- 7. A substance with a pH value less than 7.
- 9. A substance with a pH value greater than 7.
- 10. The other product formed during neutralisation.
- 11. A fruit that contains citric acid.
- 12. Another word used to describe a basic solution.
- 14. A property of some strong acids and alkalis that can damage materials.
- 17. The scale used to measure how acidic or alkaline a substance is.