Chemistry

6. a process in which a chemical substance changes because of the addition of oxygen /n/
9. the chemical breakdown of complex organic substances, such as carbohydrates and fats, that takes place in the cells and tissues of animals and plants, during which energy is released and carbon dioxide produced /n/
11. any substance, such as manure or a mixture of nitrates, added to soil or water to increase its productivity /n/
12. to undergo dissociation /v/
13. made up of a wide variety of things /adj/

1. a substance that can dissolve other substances, resulting in a solution /n/
2. to undergo or cause to undergo a process in which a dissolved substance separates from solution as a fine suspension of solid particles /v/
3. in terms of measurement by weight /adj/
4. capable of being dissolved or liquefied /adj/
5. widespread or common /adj/
7. to make a solution of, as by mixing with a liquid; pass into solution /v/
8. something that is sold for money /n/
10. incapable of being dissolved; incapable of forming a solution, esp in water /adj/