Across
- 1. when metal react with water it gives out
- 3. periodic table is divided to groups and .....
- 6. when iron reacts with water
- 7. when oxygen is added to reaction
- 9. break easily under stress
Down
- 2. heat given out
- 4. heat taken in
- 5. reaction of aluminium with water is .....
- 8. chemical symbol is Al