Glossary

3. a chemical reaction that releases energy
7. a reaction of an acid with a base, forming salt and water
9. a rapid reaction with oxygen that releases energy in the form of heat/light
10. simple written description of what is happening in a reaction
11. a chemical reaction that absorbs energy
12. chemicals produced in a chemical reaction. They are written on the right hand side of the arrow
14. a chemical reaction that has the same numbers of each atom on both sides of the arrow.
17. a way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it
18. a type of sugar produced by photosynthesis

1. a rain that has acids such as nitric acid and sulfuric dissolved in it
2. a green chemical found in chloroplasts of green plants, needed to carry out photosynthesis
4. Hydrated Iron (III)
5. a reaction that uses oxygen to release energy stored in glucose
6. single celled organisms that live in water, They are an important store of carbon or carbon sink
8. combustion that occurs when there is plenty of oxygen, it produces carbon dioxide and water vapour
13. a process in which chemicals move, caused by different concentrations of the chemical
15. a biological catalyst that speeds up the reaction
16. the breakdown of metals due to their reaction with other chemicals.