Across
- 5. One substance breaks down into two or more simpler substances.
- 7. An equation where the number of atoms of each element is the same on both sides.
- 9. Substance that speeds up a reaction, without changing itself.
- 10. Spoiling of fats and oils (bad smell/taste).
- 12. Gives out heat.
- 13. The new substances formed in a chemical reaction.
- 15. Slow damage of metals by air/moisture.
- 16. The starting substances in a chemical reaction.
Down
- 1. A way to represent a chemical reaction using symbols and formulas.
- 2. A more reactive element replaces a less reactive one.
- 3. Loss of oxygen or gain of electrons.
- 4. Two compounds exchange ions to form new compounds.
- 6. A substance reacts with oxygen to release heat and light.
- 8. Takes in heat.
- 11. Breaking compounds using electricity
- 14. Gain of oxygen or loss of electrons.