chemical reactions

2. a term used to describe materials that store carbon in their structures
3. a green chemical found in the chloroplasts of green plants, needed to carry out photosynthesis
4. a chemical reaction that absorbs energy
5. rain that has acids such as nitric acid and sulphuric acid dissolved in it
8. a reaction that uses oxygen to release energy stored in glucose
10. a simple sugar formed by photosynthesis and used in respiration
11. endothermic reaction that takes place in green plants
15. a rapid reaction with oxygen that releases energy in the form of heat and/or light
16. a process in which chemicals move, caused by different concentrations of the chemical

1. chemicals that take part in a chemical reaction
2. combustion that occurs when there is plenty of oxygen. it produces carbon dioxide and water vapour
6. the breakdown of metals due to their reaction with other chemicals
7. simple written description of what is happening in a reaction
9. a chemical reaction in which glucose is broken down, releasing energy for use by animal or plant
12. a chemical reaction that releases energy
13. chemicals produced in a chemical reaction
14. a biological catalyst that speeds up a reaction