Across
- 2. What colour flame does sodium produce when reacted with water?
- 3. What's the least reactive element?
- 6. What prevents rusting?
- 9. What is 3rd in the reactivity series?
- 10. What's a reaction that gives out heat?
- 13. What's a reaction that takes in heat?
Down
- 1. What gas is produced when a metal reacts with acid?
- 4. What appears when potassium reacts with water?
- 5. What metal is often used to protect boats from rusting?
- 7. What's the most reactive element?
- 8. Metal used to coat cans?
- 11. What is the gas needed for rusting?
- 12. What is the reaction when an more reactive element swaps with a less reactive element?