Across
- 2. hydrated iron
- 4. a chemical reaction that releases energy
- 5. a chemical reaction that absorbs energy
- 6. chemical produced in a chemical reaction written on the right hand of the arrow
- 9. the breakdown of metals due to there reaction with other chemicals
- 10. highly combustible chemicals petrol is a mix of it
- 11. a process in which chemicals move,caused by different concentrations of the chemical
- 12. a biological catalyst that speeds up a reaction
Down
- 1. a simple sugar formed by photosynthesis
- 3. a reaction that uses oxygen to release energy stored in glucose
- 7. chemicals that tale pat in a chemical reaction written on the left side of the arrow
- 8. rain that has acids such as nitric acid and sulfuric acid dissolved in it