Across
- 2. insoluble substance that is formed is.
- 4. The process of digestion and Respiration are ____ changes.
- 7. Heat is liberated in ______ reactions.
- 10. Heating of water is a _______ change.
- 11. unbalanced equation is known as
- 12. All the chemical equations must be balanced to satisfy ___ law
- 13. Substances which undergo chemical change
Down
- 1. New substances is formed in chemical reaction.
- 3. Calcium oxide is also known as.
- 5. A temporary change.
- 6. A permanent change.
- 8. Heat is absorbed in ______ reactions.
- 9. A gas that put off burning match stick with pop sound.
- 11. A Chemical equation is the ____representation of a chemical change.