Chemistry Revision

3. Subatomic particle that has a mass of 1 and a positive 1 charge (6)
5. Snails and electrons both exist in these (6)
7. Type of radiation that has a mass of 4 (5)
11. Type of radiation that is an electromagnetic wave (5)
12. A type of exothermic reaction that you are doing right now (8-11)
13. The part of an atom that contains most of the mass (7)
14. The combination of the protons and neutrons (4-6)
15. Type of radiation that can penetrate through thin aluminium (4)
17. These substances release hydrogen ions (5)
21. The type of energy stored in the bonds of molecules (8)
22. The acid with the formula HNO3 (6)
24. Subatomic particle that has a mass of 1 and no charge (7)
26. A atom that has a unusual number of neutrons (7)
27. How many protons in any element (6-6)
29. In this type of reaction the products have more energy than the reactants (11)
30. All reactions will start this these (9)
31. This type of reaction releases energy from the system to the surroundings (10)

1. If a solution had a pH of 7 it would be this (7)
2. A type of atom that emits radiation (12)
4. The process by which an unstable nucleus changes into a more stable nucleus (7-5)
6. The acid with the formula HCl (12)
8. These substances can be hydroxides or oxides (5)
9. Subatomic particle that has almost no mass and a negative 1 charge (8)
10. If hydrogen was produced from an acid reaction then this was added to the acid (5)
12. Acids and carbonates make this gas (6-7)
16. A radioisotope that has a half-life of 5730 years (6-8)
18. The acid with the formula H2SO4 (8)
19. To carbon date a material it had to once be this (5)
20. The acid that has the formula H2CO3 (8)
23. A substance made of only one type of atom (7)
25. This reactions that creates glucose in plants from water and carbon dioxide (14)
28. All acid reactions will produce this (4)