Across
- 2. always made in a chemical reaction(3,9)
- 6. A chemical which speeds up a chemical reaction but is not used up
- 7. A biological catalyst
- 9. Gas which burns with a pop
- 10. Does not dissolve
- 13. Increases the pH of an acid towards 7
- 14. alkaline substances turn pH paper this colour
Down
- 1. salt formed by reacting potassium hydroxide and hydrochloric acid (9,8)
- 3. The change of state from liquid to gas
- 4. Acidic solution you put on your chips
- 5. The change of state from solid to liquid
- 8. The kind of change which does not involve the formation of a new substance
- 11. Substance spread on fields to neutralise acidic soil
- 12. Diluting an acid moves the pH closer to this