Across
- 4. A reaction breaking down a substance into smaller parts using heat
- 10. When an acid and base reaction to make salt and water
- 11. A substance that is produced during a chemical reaction
- 12. A substance which speeds up a reaction without itself being used up
- 13. A substance that takes part in and undergoes change during a reaction
- 14. A measurement reading of how acidic or alkaline something is
- 16. A row in the periodic table
Down
- 1. Substances with a pH more than 7
- 2. A reaction where a substance bonds with oxygen
- 3. Reaction where heat is given off
- 5. An interaction between two or more substances that brings about a chemical change
- 6. Substances with a pH less than 7
- 7. Reaction where heat is absorbed
- 8. Type of indicator used to test for pH
- 9. A more reactive element take s the lace of a less reactive element in a compound
- 15. A column in the periodic table