Types of reactions

3. substance used for white washing walls
7. what an equation is when it has the same number of each type of atoms on both sides
11. oxidation of fats and oils
12. process by which a metal surface is attacked by a certain substance such as air or water
14. one reactant is broken down into two or more products
16. breathing element that is present in air
17. two chemical substances react by exchanging ions to produce two new molecules.
18. a metal that releases blue-white light when burnt
19. a list of elements in order of reactivity

1. decomposition reaction which includes heat
2. smell of sulphur di oxide and sulphur trioxide
4. a chemical change in which reactants become products
5. the substance on the right side of the equation
6. chemical decomposition produced by passing an electric current through a liquid
8. when oxygen is a reactant burning
9. the combining power of an element
10. produces brown fumes
13. the substance on the left side of the
15. two reactants combine to form one product