environmental chemistry part 2

Question 1

breakdown of materials by organisms

Answer 1

bio degradation

Question 2

have a density of 5 or higher

Answer 2

heavy metals

Question 3

refers to processes that require or contain oxygen

Answer 3

aerobic

Question 4

liquid that contains dissolved substances from the soil

Answer 4

leachate

Question 5

odourless,colourless gas compossed of three oxygen atoms

Answer 5

ozone

Question 6

poisonous substance

Answer 6

toxin

Question 7

breakdown of substances using sunlight

Answer 7

photolysis

Question 8

atmospheric gases that trap heat

Answer 8

green houses gasses

Question 9

the increase in concentration of a chemical as it moves up the food chain

Answer 9

biomagnification

Question 10

the amount of a substance that causes 50% of a group of test animals to die if they are given a specified does of the substances all at once

Answer 10

LD50

Question 11

carrying away of a substance by water or air

Answer 11

Dipersion

Question 12

measurement used to describe a very small concentration of a chemical

Answer 12

ppm

Question 13

breakdown of substance by plants

Answer 13

phytoremediation

Question 14

increased worldwide atmospheric tempatures

Answer 14

global warming

Question 15

mixing of a substance with water or air

Answer 15

dilution

Question 16

description of a substance that contains connected pores

Answer 16

permable

Question 17

what are four factors that influence the amount of dissolved oxygen in a body of water

Answer 17

Tempature, the number of organisms using up oxygen, photosythesis, turbulence

Question 18

⭐ how much of the Exxon Valdez oil spill was
1- degraded in some way
2-recovered
3-not degraded or recoved

Answer 18

1- 70 %
2- 14%
3-16%

Question 19

does not contain carbon

Answer 19

inorganic compound

Question 20

compound produced when an acid neutralizes a base

Answer 20

salt

Question 21

pesticide used to kill plants

Answer 21

herbicide

Question 22

scale which indicates the concentration of hydrogen ions

Answer 22

pH

Question 23

substance that is burned that was formed long ago from something once living

Answer 23

fossil fuels

Question 24

underground container where bacteria break down organic materials

Answer 24

septic tank

Question 25

change in the environment that produces a condition that is harmful to living things

Answer 25

pollution

Question 26

organic molecules such starch, cellulose and glycogen

Answer 26

carbrohydrates

Question 27

includes DNA and RNA

Answer 27

nucleic acids

Question 28

treated water waste

Answer 28

effluent

Question 29

substance tat enriches the soil to make plants grow better

Answer 29

fertilizer

Question 30

includes fats oils and waxes

Answer 30

lipids

Question 31

anything greater then 7.0 is a

Answer 31

base

Question 32

anything less then 7.0 is a

Answer 32

acid

Question 33

something that is 7.0 is

Answer 33

neutral

Question 34

which is inorganic or organic 1- natural gas 2- starch 3- RNA 4- aluminum oxide

Answer 34

1- organic 2-organic 3- organic 4- inorganic

Question 35

which is inorganic or organic 1- carbon dioxide 2- fats 3- baking soda 4- sugar

Answer 35

1- inorganic 2- organic 3- inorganic 4- sugar

Question 36

give 2 examples of a substrate

Answer 36

Tubeworms and blowholes on whales

Question 37

how does the thinning of the ozone layer affect human health

Answer 37

it can lead to more cases of skin cancer