Environmental Chemistry Unit Review

Environmental Chemistry Unit Review

Science 9 Unit C

I can identify the 4 types of organic nutrients and typical foods that contain each nutrient.

Topic 1

Multiple Choice

What is the primary organic macronutrient in potatos?

• Protein

• Carbohydrates

• Lipids

• Minerals

I can explain the role the 4 organic nutrients play in the body, and in providing cellular energy. 

Topic 2

Multiple Choice

This organic molecule is used by the body as its secondary (backup) supply of energy

• Protein

• Carbohydrates

• Lipids

• Vitamins

I can identify and give examples of minerals the body needs.

Topic 1

Multiple Choice

This mineral is important for nerve impulses throughout the body

• iron

• calcium

• iodine

• potassium

I can identify what nutrients are found in fertilizer, what role they play for plants, and can interpret the numbers used to communicate fertilizer nutrients

Topic 1

Multiple Choice

Nitrogen is very important for proper leaf growth. If you have a lawn that is deficient in nitrogen, which fertilizer would it be best to select?

• 7-10-14

• 5-15-9

• 15-0-5

• 0-10-5

I can name the types of pesticides and their purpose.

Topic 2

Multiple Choice

What type of pesticide is Raid Bug Spray?

• herbicide

• insecticide

• fungicide

• rodenticide

I can explain some of the pros and cons of pesticide use and can explain why some pesticides (like DDT) have been banned. 

Topic 2

Multiple Choice

What effect did DDT have on birds of prey?

• It cause thin egg shells

• It killed their prey

• It caused excessive weight loss

• It caused birth defects

I can explain how biomagnification works and that it results in animals at the top of the food chain having high concentrations of pollutants.

Topic 2

Multiple Choice

Which organism would you expect to have the highest concentration of mercury?

• plankton

• shark

• tuna (large fish)

• sunfish (small fish)

I can define pesticide resistance and I understand how it occurs.

Topic 2

Multiple Choice

What farming practice below INCREASES pesticide resistance

• Changing the crop each year

• Only using one pesticide

• Introducing pest predators

• Using fertilizer

I can explain what organic farming is and how it is different from traditional farming practice

Topic 2

Multiple Choice

Which of the following is FALSE about organic farming

• It does not allow any fertilizer

• Synthetic pesticides cannot be used

• They often rotate crops

• They use predator prey relationships to manage pests

I can identify the chemical and physical properties of both acids and bases.

Topic 3

Multiple Choice

The following is NOT a property of a base

• pH above 7

• Tastes sour

• Feels slippery

• Corrosive

I can explain what an acid-base indicator is and I know how to use litmus to identify if a solution is acidic, basic, or neutral.

Topic 3

Multiple Choice

Which of the following substances would change red litmus paper to blue?

• vinegar

• water

• lemon juice

• windex

I can explain the pH scale, including that it is a 10X scale, and can identify from values if a solution is acidic, basic or neutral.

Topic 3

Multiple Choice

Which of the following is true about hand soap with a pH of 10 and eggs with a pH of 8?

• Hand soap is 2 times more basic than eggs

• Hand soap is 20 times more basic than eggs

• Hand soap is 100 times more basic than eggs

• Hand soap is 200 times more basic than eggs

I can explain what acid precipitation is, how it occurs including the pollutants responsible and their sources.

Topic 3

Multiple Choice

Which pollutant does NOT contribute to acid rain?

• carbon dioxide

• sulfur dioxide

• nitrogen dioxide

• silicon dioxide

I can explain the harmful effects of acid precipitation including damage to aquatic ecosystems, man made structures, leaching of heavy metals, etc.

Topic 3

Multiple Choice

Which of the following is NOT a negative impact of acid raid

• Global warming

• leaching of heavy metals into water supplies

• acidification of aquatic ecosystems

• Increased rate of rusting

I can identify and explain methods and technologies for preventing and treating acid precipitation.

Topic 3

Multiple Choice

Aquatic ecosystems that have been acidified can be treated with:

• scrubbing

• liming

• filtering

• coagulation

I can explain the terms pollutant and pollution and I can identify and give examples of the 7 types of pollution.

Topic 4

Multiple Choice

The main concern for coal burning power plants is this kind of pollution

• land

• air

• thermal

• water

I can explain what a chemical concentration is.

Topic 4

Multiple Choice

Concentration is a representation of:

• solvent divided by volume of solute

• solvent divided by volume of solution

• solute divided by volume of solvent

• solute divided by volume of solution

I can calculate concentrations in ppm.

Topic 4

Multiple Choice

0.043 grams of PCBs are found in 5.20 kg of waste water. The concentration of PCBs is:

• 0.22

• 1.2

• 8.3

• 121

I can compare concentrations in ppm, ppb, and ppt.

Topic 4

Multiple Choice

Select the highest concentration of DDT

• 5 ppm

• 20 ppb

• 59 ppb

• 350 ppt

I can explain what toxicity is and the difference between acute and chronic toxicity.

Topic 4

Multiple Choice

lead over multiple exposures attacks the central nervous system resulting in seizures or death. Lead is...

• acutely toxic

• chronically toxic

• acutely diuretic

• chronically diuretic

I can explain what LD50 is and can compare LD50 values to compare toxicity.

Topic 4

Multiple Choice

Which toxin below is the MOST toxic based on its LD50 value

• Formaldehyde 700 ppm

• Fentanyl 300 ppb

• Robustoxin 150 ppb

• Maitotoxin 50 ppt

I can explain the problems in accurately testing toxicity of substances for humans and how this relates to what happened with thalidomide.

Topic 4

Multiple Choice

The following is a problem with chemical toxicity testing

• Mice may not react the same way to the chemical as humans

• The chemical may affect the human differently depending on the absorption method

• Every person can have a different reaction to a chemical

• All of the above

I can explain the difference between persistent and non-persistent waste.

Topic 5

Multiple Choice

A persistent waste:

• Does not biodegrade quickly but does bioaccumulate

• Does biodegrade quickly and bioaccumulates

• does not biodegrade quickly or bioaccumulate

• Does biodegrade quickly but does not bioaccumulate

I can use biological indicators to estimate the health of an aquatic ecosystem when given what organisms can survive at different concentrations and the number of each organism detected. I also know what common fish species indicate a high oxygen concentration.

Topic 5

Multiple Choice

Which organism would you NOT find in water with an oxygen concentration of 7 ppm?

• aquatic worm

• crayfish

• leech

• trout

I can explain the factors that lead to both an increase and decrease in oxygen concentration in aquatic ecosystems.

Topic 5

Multiple Choice

What condition below is favourable for a stream increasing its oxygen content?

• an increase in nitrates

• increasing temperature

• choppy water (rapids)

• decrease in aquatic plants

I can explain the difference between point source and nonpoint source pollution.

Topic 5

Multiple Choice

Which of the following is a point source of pollution?

• A smoke stack from a tire factory

• pollution from automobiles

• fertilizer runoff from fields

• heavy metals leaching into a lake

I can explain how pollution is transferred through air, water and soil.

Topic 6

Multiple Choice

The best explanation why ocean oil spills are a global environmental problem is because:

• The oil companies stock price might dip

• The oil spreads all over the globe due to ocean currents

• The oil spill will sink to the bottom of the ocean

• It could cause a decrease in global oil supply

I can identify human activities that have contributed to air pollution.

Topic 6

Multiple Choice

Which of the following human activities has NOT increased the amount of air pollution

• changes in transportation

• increase in consumerism

• increase in population

• increase in tree planting programs

I can explain what CFCs were used for and the effect they have on the ozone layer.

Topic 6

Multiple Choice

Which of the following statements is TRUE for CFCs?

• It is a refrigerant and it destroys toxic ozone molecules

• It is a refrigerant and it increases toxic ozone molecules

• It is a pesticide and it destroys toxic ozone molecules

• It is a pesticide and it increases toxic ozone molecules

I can explain the role of the ozone layer in preventing harmful UV light from reaching Earth’s surface.

Topic 6

Multiple Choice

If the amount of CFCs in the atmosphere increases...

• ozone will increase resulting in more UV radiation on Earth's surface

• ozone will increase resulting in less UV radiation on Earth's surface

• ozone will decrease resulting in more UV radiation on Earth's surface

• ozone will decrease resulting in less UV radiation on Earth's surface

I can explain the general water treatment process for treating sewage. 

Topic 6

Multiple Choice

Which methods are often used to kill harmful bacteria in water?

• UV radiation and methylation

• chlorination and methylation

• methylation and ozonation

• UV radiation and chlorination

I can explain what an aquifer is and how it can become polluted.

Topic 6

Multiple Choice

An aquifer is water that is found:

• Under the ground and typically has high amounts of bacteria

• Under the ground and typically has low amounts of bacteria

• Above the ground and typically has high amounts of bacteria

• Above the ground and typically has low amounts of bacteria

I can explain how a sanitary and secure landfill differ in their design.

Topic 6

Multiple Choice

A secure landfill is different than a sanitary landfill in that a secure landfill

• Covers the waste each day

• has a clay liner

• produces more methane

• has more testing wells

I can identify the potential problems with landfills including leachate and methane production and how this can be monitored or used.

Topic 6

Multiple Choice

What would be the most environmentally friendly way to use methane from landfills?

• Just let it naturally go into the atmosphere

• Collect and burn it

• Use it for power generation

• Pump it deep underground

I can identify human activities that have contributed to air pollution.

Topic 6