Chemistry Revision

4. The type of bond that comes from the interatomic linkage that results from the sharing of an electron pair between two atoms
6. The liquid in which the solute dissolves
9. An atom of an element with the same number of protons but a different number of neutrons
10. A substance with a pH less than 7
11. The solid left in filter paper after filtration
12. A charged atom or molecule
14. A soluble base
15. A type of indicator which turns pink in alkali conditions
17. The electrons in the outer shell
18. A process that uses electricity to coat one metal with another
19. A very large molecule
20. A group 2 metal beginning with M

1. The change in state from gas to solid
2. A substance with a pH more than 7
3. The change in state from solid to liquid
5. A a technique where a solution of known concentration is used to determine the concentration of an unknown solution
7. A substance with a pH equal to 7
8. The solid which dissolves in the solvent
13. A substance that increases the rate of reaction without being used up
16. Either a proton or a neutron, considered in its role as a component of an atomic nucleus