Across
- 5. If you squeeze something really hard you increase the p_______e
- 6. These chemicals are added to speed up a reaction
- 8. A reaction where 1 atoms switches with another
- 9. This gas extinguishes fire = makes the fire die out
- 11. This reaction absorbs heat
- 12. This reaction releases heat
- 13. This gas makes fire burn even more
Down
- 1. This is how much area an object is touching
- 2. How much or how little chemicals you use
- 3. This gas makes a pop sound when lit in a test tube
- 4. This process is used to make iron and steel
- 7. This makes reactions go faster by increasing the vibration of atoms and molecules
- 10. This reaction switches Aluminium with Iron