Across
- 2. Reactions during which heat is released.
- 6. Reaction involving addition of hydrogen or removal of oxygen from a substance.
- 7. Occurs in the presence of oxygen and water.
- 8. A substance undergoes changes only in its physical properties such as shape,size,colour and state,and no new substances are formed.
- 9. One element replaces another element from a compound.
- 10. Process of depositing a layer of zinc on iron.
Down
- 1. When two substances react chemically to form new substances with different chemical properties.
- 3. Reactions in which heat is absorbed.
- 4. A solid in which atoms are arranged in a regular pattern.
- 5. Reaction involving addition of oxygen or removal of hydrogen from a substance.