| 1. |
______ Colorless gas formed when fossil fuels, or other compounds containing sulfur, are burned. |
| 2. |
______ Colorless, odorless, poisonous gas formed from the incomplete burning of fossil fuels such as coal, oil, and gasoline. |
| 3. |
______ A metal element classified as a "heavy metal." It can be found in the air we breathe or the food and water we consume. |
| 4. |
______ Solid particles or soot and dust which are suspended in the air. Also in the form of liquid droplets. |
| 5. |
______ Emitted in air from high temperature burning of fossil fuels such as oil, coal, and gasoline. |
| 6. |
______ Colorless gas formed by the reaction of organic vapors, oxides of nitrogen, and oxygen aided by sunlight. |
| 7. |
______ Many different toxic airborne chemicals; arsenic, asbestos benzene, beryllium, mercury, or vinyl chloride. |
| 8. |
______ A kind of particulate that comes from minerals. You can find me in thousands of different kinds of materials, like ceilings, roofs, floor tiles, insulation, and even car brakes. |
