WorksheetsEnvironmental Chemistry - Gr. 9 Unit Review
Total questions: 22
Worksheet time: 18mins
Carbohydrates provide the body with _________?
Water
Dietary fibre
Sweetness
Energy
Lipids are __________?
Organic
Inorganic
What is the function of nitrogen in plant growth?
Increases disease resistance
Makes seeds
Produces a healthy green color
Decrease of growth
What does phosphorus do to help a growing plant?
Leaf growth
Root growth
Fruit growth
What is the rate of Nitrogen in the 15-10-5 fertilizer?
15
10
5
Fish, nuts, oils and avocado are healthy sources of....
Fiber
Protein
Minerals
Fat
CHO2
True or false. Acid rain caused in one country can cause problems in other nearby countries
true
false
How is acid rain formed?
Carbon monoxide and carbon dioxide mix with water in the ocean.
Carbon dioxide and oxygen mix with water in the air.
Sulfur dioxide and carbon monoxide mix with lake water.
Sulfur dioxide and nitrogen oxide mix with water in the air.
Acid rain has a pH LESS than
6
7
8
3
Dose causing death of half of the organisms exposed at this level.
LD50
LC50
TC50
TD50
True or false. Acid rain caused in one country can cause problems in other nearby countries
true
false
What is bioaccumulation or biomagnification?
buildup of toxins in an organism
the total mass/amount of organisms in a given area
the number of different species in an area
Which organism would have the most bioaccumulation?
grass
rabbit
snake
hawk
In the catalytic converter, which gas is removed by oxidation?
carbon monoxide
carbon dioxide
nitrogen dioxide
nitrogen
Which of the following pollutants can cause an overgrowth of algae?
Phosphate
Nitrate
Both phosphates & nitrates
Which of the following concentrations is higher? (ppm= part per million)
0.2 ppm
2.2 ppm
20.2 ppm
200 ppm
What is more dangerous LD50 of
0.04 ppm
1.29 ppm
1.04 ppm
0.40 ppm
An underground water supply is...
erosion
river
water shed
aquifer
