Environmental Chemistry

4. a way of comparing the relative acidity or alkalinity of a substance (2 words)
6. All living things need a constant supply of this (2 Words)
7. 14 on the pH scale (2 words)
8. Number of naturally occurring elements
9. These increase the surface area for absorption of nutrients (2 Words)
10. Recommend your daily intake of nutrients (3 Words)
13. a pesticide that was created in the 1930’s but banned in 1962 (abbreviation)
15. a mixture of plant compounds extracted from certain lichens
16. a method in which you release powdered calcium carbonate from aircraft
17. copper oxide bed regenerable application

1. Require 18 different elements for proper growth (2 Words)
2. organisms that eat or disturb the crop that humans do not want
3. CaSO3 (2 words)
5. this is how acids taste
10. a substance that speeds up a chemical reaction without being used up in the reaction
11. a chemical reaction in which oxygen combine with other elements to form new substances
12. Substances that aren’t destroyed by cooking or exposure to air
14. this is how bases taste