Across
- 2. A type of reaction where a new substance is formed by combining two or more elements
- 4. A solid that forms and settles out of a liquid mixture during a chemical reaction
- 6. The measure of hydrogen ion concentration in a solution
- 8. The process of breaking down a compound into simpler substances
- 10. A substance that changes colour when exposed to acids or bases
- 11. A substance that speeds up a chemical reaction without being consumed
- 12. A chemical equation with the same number of atoms of each element on both sides (shows conservation of mass)
- 13. A substance that neutralises an acid
- 14. A reaction between an acid and a base to form a salt and water
- 16. A substance that is present at the start of a chemical reaction and gets changed into something new
- 17. The gradual destruction of metals by chemical reactions
Down
- 1. A reaction between an acid and a metal, producing hydrogen gas
- 3. A reaction where energy is released as heat
- 5. A substance that neutralises an acid
- 6. A reaction where a solid forms from a solution
- 7. A reaction that absorbs heat energy
- 9. A reaction where a substance reacts with oxygen and releases energy, often as heat and light (burning)
- 15. A substance that is made as a result of a chemical reaction