Across
- 2. a chemical reaction that can go forwards and backwards
- 7. a gas that is added to swimming pools to kill viruses and bacteria
- 9. one of the five observations that shows a chemical reaction has happened
- 12. this is another name for burning
- 13. the molten metal made at 2500C from the thermite reaction
- 14. has the formula CO2
- 15. the name for a solid that forms in a chemical reaction
Down
- 1. the chemicals that are made in a chemical reaction
- 3. the name for a reaction that gets hotter
- 4. this is a chemical reaction where oxygen is added
- 5. the chemical that start a chemical reaction
- 6. this evidence shows that a gas is being produced
- 8. the gas that makes a squeeky pop when it is set alight
- 10. Lithium Sodium and Potassium all belong to this reactive group of metals
- 11. the name for a reaction that gets colder