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Chemistry 2013

Study cards fro my chemistry test!

Explain what the Ozone Layer is A Layer of clear odor less gas (ozone) that sheilds earth from harmful UV rays.
Name one microbiological indicator Take a small sample from the water source.
what do scientists use to help determin water quality? Organisms.
What are invertabrates? Animals without a backbone.
Name six chemical factors that affect organisms. Disolved oxygen, acidity, heavy metals, Pesticides, plant nutrients such as nitrogen and phosphourus, salts such as sodium chloride and magniesium sulfate.
defin spring acicd shock. whne the PH in a river, lake , or pond dramitically lowers in a short period of time.
what is a pesticide? A chemical used to kill pests that eat or ruin plants, humans, or structures.
Created by: BrookeM621*