Across
- 4. Original substances participating in a chemical reaction are known as the _____.
- 7. The new substances formed in a chemical reaction are known as ______.
- 8. Reactions during which heat is released.
- 10. Substances which oxidize other substances by providing oxygen to them or by removing hydrogen from them.
Down
- 1. Reactions in which heat is absorbed.
- 2. The process of depositing a layer of zinc on iron is called _____.
- 3. A solid in which atoms are arranged in a regular pattern.
- 5. Substances which reduce other substances by removing oxygen from them or by supplying hydrogen to them.
- 6. In a _____, a substance undergoes changes only in its physical properties such as shape, size, color and state, and no new substances are formed.
- 9. A ______ occurs when two substances react chemically to form new substances with different chemical properties.