7E and 7F Summary

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Across
  1. 3. Common acid which goes with fish and chips
  2. 5. Gas which burns with a squeaky pop
  3. 10. What physical changes often are
  4. 11. Relights a glowing splint
  5. 12. Has a pH of 7
  6. 14. Has a pH of less than 7
  7. 15. Coloured dye that changes colour when mixed with acids/alkalis
  8. 17. Given off in many reactions
  9. 19. What word is used for if an acid is not dilute?
  10. 22. The indicator that turns blue in alkalis and red in acids
  11. 23. Produced when burning along with carbon dioxide
Down
  1. 1. Chemical you end with
  2. 2. Substance used to test for carbon dioxide
  3. 4. The scale for acids
  4. 6. Type of reaction where a new substance is always formed
  5. 7. Completes the fire triangle with heat and oxygen
  6. 8. Combustion
  7. 9. The reaction when an acid is mixed with an alkali
  8. 13. What hazard warning is given by a large black cross?
  9. 16. Has a pH of more than 7
  10. 18. What hazard warning is given by a substance spilling onto a hand or block?
  11. 20. A fast reaction which gives out a lot of heat and gas
  12. 21. Chemical you start with