Environmental Chemistry

2. Substance that enriches soil so that plants will grow better
4. Measurements used to describe very small concentrations of chemicals
6. pH of 7; neither an acid or a base
8. Liquid that dissolves and carries substances as it passes through soil
9. Reaction between an acid and a base that produces water and salt
17. The water that fills all the spaces in the soil
18. Mixing of a substance with air or water; reduces the substances concentration
20. Compound that dissolves in a water to form a solution with a pH higher than 7
21. Large pipes that carries water from street drains into a river or lake
22. Organic molecules made up of atoms of carbon, hydrogen and oxygen; pasta
25. Organic molecules made up of atoms of carbon, hydrogen and oxygen; chicken and beef
27. Wastewater containing materials from your kitchen, bathroom and laundry
29. Compound that dissolves in water to form a solution that has a pH lower than 7
30. Chemicals used to kill pests
31. Gases in Earth's atmosphere that trap the heat radiated from the Sun; ex. water vapour
34. Nutrients that organisms need in only small amount
36. Scattering of a substance away from its source
38. Organic molecules made up of atoms of carbon, hydrogen and oxygen; fats and oils
39. Building blocks of proteins

1. Any change to the environment that produces a condition harmful to living things
3. Wastewater released from a factory or sewage treatment plant
5. DNA and RNA
7. Process in which molecules move from an area of higher concentration to one of lower
10. CO; colourless, odourless gas found in the exhaust of internal combustion vehicle
11. Animals without backbones
12. Elements and compounds that organisms need for living, growing and reproducing
13. When nitrogen combines with oxygen as a result of fuel combustion; NO
14. Are one type of substance monitored to determine water quality; mercury and zinc
15. Forms when sulfur combines with oxygen in the air; major air pollutant; SO2
16. Fuel formed from dead plants and animals; coal, oil and natural gas
19. Tiny spaces between soil or mineral grains
23. Colourless, odourless gas found at ground level, result of industrial processes and vehicle
24. Increase in concentration of a chemical or element in a single organism
26. Underground material used to collect sewage
28. Increase in concentration of a chemical or element as it moves up the food chain
32. Substance made up of only type of atom
33. Nutrients that organisms need in large amounts
35. Breakdown of materials by organisms such as earthworms, bacteria and fungi
37. Measure of the percent of hydrogen ions in a solution