Across
- 3. Colour of universal indicator in a strong acid
- 4. The scale used to show how acidic or alkaline something is
- 6. Gas that makes a squeaky pop with a lit splint
- 10. A sign of a chemical reaction
- 11. Substances you start with in a reaction
- 13. The liquid used to test for carbon dioxide
- 14. Gas that turns limewater cloudy
- 17. Indicator that shows many colours depending on pH
- 18. Substances made in a reaction
- 19. Solid made when a metal reacts with an acid
Down
- 1. Solid formed when a metal reacts with oxygen
- 2. The reaction between an acid and an alkali
- 4. Colour of universal indicator in a strong alkali
- 5. Gas often made when metals react with acids
- 7. A substance with pH exactly 7
- 8. Another word for combustion
- 9. Reaction where a fuel reacts with oxygen
- 12. A substance with pH less than 7
- 15. Gas that relights a glowing splint
- 16. A substance with pH more than 7