Across
- 3. a simply sugar produce by photosynthesis
- 4. a series of chemical reaction
- 5. chemical that take part in chemical reaction
- 6. type of acid
- 7. type of gas
- 9. endothermic reaction that takes place
- 10. written description
- 11. rain
- 13. chemical produce in chemical reaction
Down
- 1. boom
- 2. digestion
- 8. type of gas
- 12. the movement of chemicals