Across
- 1. The standard way of measuring the strengths of acids and bases. pH is a number from 0 to 14 that relates to the concentration of hydrogen ions in a solution.
- 4. A substance that has a pH = 7. Chemical formular: H2O
- 5. Able to damage or destroy another substance by a chemical reaction.
- 8. Strong bases are _______________________ and will destroy living material.
- 10. Any substance that changes colour when mixed with an acid or base.
- 12. An indicator that changes colour gradually over a range of pH and is used in testing for acids and alkalis.
- 14. A base that dissolves in water.
- 15. A substance with a pH greater than 7. Bases have certain properties, such as tasting bitter and having a soapy, slippery feel
Down
- 2. An ion that is released by acids in solution.
- 3. A reaction between acid and base to produce salt and carbon dioxide gas.
- 6. An ion that is released by bases in solution.
- 7. A substance that takes part in a chemical reaction
- 9. A paper stained with litmus which is used to indicate the acidity or alkalinity of a substance.
- 11. A substance that is formed as a result of a chemical reaction
- 13. A substance with a pH less than 7. Acids have certain properties, such as tasting sour and dissolving some metals.