Across
- 5. chemicals that take part in a chemical reaction
- 7. occurs when oxygen is limited it produces carbon and carbon monoxide but doesn't release as much heat or light as complete combustion
- 9. releases energy
- 10. an endothermic reaction that takes place in green plants and uses energy from sunlight
- 11. the break down of metals due to their reaction with other chemicals
Down
- 1. occurs when there is plenty of oxygen and produces carbon dioxide and water vapour
- 2. a simple sugar formed in photosynthesis
- 3. chemicals produced in a chemical reaction
- 4. a reaction that uses oxygen to release energy stored in glucose
- 6. absorbs energy
- 8. written description of what is happening in a reaction