Chemical Reactions

5. a rapid reaction with oxygen that releases energy in the form of heat and/or light.
6. the breakdown of metals due to their reaction with other chemicals.
7. a green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen in the atmosphere; chemical formula Cu(OH)2
9. a chemical reaction that obsorbs energy.
10. endothermic reaction that takes place in green plants. uses energy from sunlight to combine water and carbon dioxide and produce glucose and oxygen.
12. a way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it.
13. chemicals that take part in chemical reaction. they are written on the left hand side of the arrow.

1. chemicals produced in a chemical reaction. they are written on the right hand side of the arrow.
2. a chemical reaction that releases energy.
3. hydrated iron (III) oxide, Fe2O3.H2O
4. combustion that occurs when there is plenty of oxygen. it produces carbon dioxide and water vapour.
6. a term used to describe materials that store carbon in their structures. plants and animals can be thought of as carbon sinks.
8. the term commonly used for sodium chloride, but covers any compound formed by a metal taking the place of the hydrogen atom in an acid.
11. highly combustible chemicals; petrol is a mixture of me.
12. rain that has acids such as nitric acid and sulfuric acid dissolved in it.