Chemistry crossword

5. A reaction that involves the breakdown of a compound into simpler substances
6. An ion that does not take part in a chemical reaction
7. A reaction that involves the building up of compounds by combining simpler substances, normally elements
8. A theory stating that the particles involved in a chemical reaction must collide in order to react
13. A strong acid readily releases a hydrogen ion in a chemical reaction
14. A reaction used to prodduce solid products from solutions of ionic substances
16. A smaller molecule from which polymers are made
17. The number of active molecules in a set volume of solution
19. a substance that can be broken down by bacteria, fungi and other living organisms
21. a substance that increases the rate of a reaction but is not used up in the reaction
22. a mixture of a solute dissolved in a solvent such as water

1. A long-chain molecule formed by the joining of many smaller repeating molecules
2. An insoluble compound formed in a precipitation reaction
3. An acid which most of its molecules release hydrogen ions into solution
4. A reaction that involves te combination of oxygen with a fuel
9. A reaction in which an acid and a base combine to produce a metal salt and water
10. A molecule that contains only carbon and hydrogen atoms
11. This refers to an acid solution with a high concentration of hydrogen ions
12. How fast or slow a reaction proceeds
15. Process of joining of smaller units to form a long-chain molecule
18. A reaction that involves oxygen and releases light and heat energy
20. A small number of active molecules