Unit C Environmental Chemistry: section 3.0 Flashcards

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1
Q

What are the three stages that air pollution occurs in?

A

Release of chemical at the source
Dispersion of the chemical in the atmosphere
Deposition of the chemical in soil or water

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2
Q

Airborne pollutants travel _______ with the presence of wind, but travel _______ distances with precipitation

A

Farther, Short

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3
Q

Why is air pollution an international problem?

A

Because chemicals in other countries can be separated by wind to other continents

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4
Q

What is groundwater?

A

The water that fills all the interconnected space in soil

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5
Q

What is the water table?

A

The top of the groundwater zone?

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6
Q

Why do contaminants build up more in groundwater than inn flowing water?

A

Because contaminants cannot be quickly dispersed and can become concentrated

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7
Q

What is permeable soil?

A

Soil with interconnected pores

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8
Q

What is leachate?

A

Liquid that leaks from landfills and contaminates the soil

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9
Q

How do sanitary landfills prevent leaching?

A

They line them with clay and plastic

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10
Q

What is dispersion?

A

The scattering of a substance away from its source

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11
Q

What is dilution?

A

Reducing the concentration of a pollutant

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12
Q

What is biodegration?

A

To break down a substance

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13
Q

What is phytoremidiation?

A

Using plants to clean up pollution?

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14
Q

What is photolysis?

A

The breakdown of compounds by sunlight

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15
Q

How is biodegradation affected by temperature?

A

The higher the temperature the faster the rate of biodegration

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16
Q

How does soil moisture affect the rate of biodegradation?

A

More moisture in the soil the faster biodegration

17
Q

How does oxygen supply affect the rate of biodegration?

A

More oxygen more bacteria available to break things down faster biodegration

18
Q

What is biomagnification?

A

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

19
Q

What does MSDS stand for?

A

Material safety data sheets