Across
- 2. decomposition in the presence of sunlight
- 7. addition of oxygen
- 8. chemical name of common salt
- 9. addition of hydrogen
- 10. Mg+O2 is a ———- reaction
Down
- 1. slow eating up of metals due to air
- 3. unbalanced equations are called
- 4. an insoluble solid product of reaction
- 5. oxidation-reduction reactions
- 6. most reactive metal