Across
- 2. This indicator is a mixture of dyes, showing different colours on a chart.
- 4. Ethanoic acid is a __ acid.
- 5. These salts are always soluble in water.
- 6. This salt reacts with an alkali to release ammonia gas.
- 7. Sodium __ reacts with zinc sulfate to give zinc hydroxide and sodium sulfate.
- 9. Ethanoic or acetic acid is the main component.
- 12. A strong acid.
- 14. A measure of the concentration of hydrogen ions in a solution.
- 16. Law of conservation of __ gives a balanced equation.
- 18. Acid reacts with a metal to give __ gas.
- 22. The state symbol for ammonia solution (ammonia dissolved in water).
- 23. Water is described by which state?
- 24. Acids react with carbonates to give carbon __, salt and water.
- 25. Acids turn blue __ paper red.
- 26. Physical state of a substance is shown by __ symbols.
- 28. Write a __ equation, then the chemical equation.
Down
- 1. Barium __ is not soluble in water.
- 3. In this reaction, an acid reacts with a base to give salt and water.
- 8. pH of 7.
- 10. These have a bitter taste.
- 11. A substance that produces hydrogen ions in water.
- 13. Lead carbonate, sulfate and __ are insoluble in water.
- 15. This number is not written in front of a formula.
- 17. All salts of group one elements are __ in water.
- 19. Nitric acid reacts with sodium hydroxide to give sodium __ (salt) and water.
- 20. Air pollutants are __ to the environment and people.
- 21. __ of fuels produces energy.
- 27. Calcium oxide and hydroxide are used to reduce soil __.