Across
- 3. a change in which a substance undergoes changes only in its physical properties
- 6. a reddish-brown substance usually found on iron objects like iron nails etc.
- 7. the process of turning from liquid into vapour.
- 8. reactions during which heat is released
- 9. when a compund breaks into two or more substance
- 10. the process of obtaining crystals of a substance from its solution in water
Down
- 1. the process of depositing a layer of zinc on iron
- 2. when two substances react chemically to form a new substance
- 4. reactions during which heat is absorbed
- 5. when a compound is formed from its elements