Chemistry Revision

1. The reaction between copper sulfate and iron is a .... reaction.
3. We can measure pH using the .... indicator.
5. KOH is .... hydroxide.
8. The least reactive alkali metal.
9. The charge of the nucleus.
10. A particle made of multiple atoms.
13. When two substances mix without forming a new substance, they form a .....
14. Most of the universe is made of hydrogen and ....
24. A solution with a lot of solute.
25. The noble metals are gold, silver and ....
26. Subatomic particles that orbit the nucleus.
28. Salts containing chlorine.
31. Biological catalysts.
32. A solution with pH<7.
35. The rate of reaction .... when you increase the temperature.
36. Mixtures of metals.
38. The spreading of a substance from an area of high concentration to an area of low concentration.
42. Compounds with the OH group.
43. The rows in the Periodic Table.
44. The atomic number shows the number of .... in the nucleus.
46. HBr is .... acid.
47. A reaction between a hydroxide and an acid is called a .... reaction.
48. The substances at the beginning of the reaction.

2. Element number 116 in the Periodic Table.
4. The particles inside .... compounds are held together by electric force.
6. The metals in group 1 of the Periodic Table.
7. The substance that dissolves in a solution.
11. The change of state from solid to gas.
12. A quantity that shows how much of a substance you can dissolve in a given solvent.
15. A reaction in which heat is taken in.
16. CaCO3 is calcium .....
17. An indicator that turns blue in basic solutions.
18. An indicator that turns pink in basic solutions.
19. Compounds with oxygen.
20. A reaction in which heat is given out.
21. The products of a neutralisation reaction are a salt and .....
22. The bonding in molecular compounds is called .... bonding.
23. The substances at the end of the reaction.
27. Element number 40 in the Periodic Table.
29. The change of state from gas to liquid.
30. The elements in group 18 of the Periodic Table.
33. Salts produced using sulfuric acid.
34. Element number 12 in the Periodic Table.
37. The change of state from liquid to gas.
39. The motion of small particles in liquids and gases is called the .... motion.
40. Burning, rusting and combustion are examples of .... reactions.
41. Atoms that have the same atomic number and a different mass number.
45. A chemical equation that has the same number of atoms of each element on each side.