Unit C - Section 3

Question 1

Release

Answer 1

Of the chemical at the source

Question 2

Dispersion

Answer 2

Of the chemical in the atmosphere

Question 3

Deposition

Answer 3

Of the chemical in the soil

Question 4

Groundwater

Answer 4

When all the spaces in the soil get filled with water

Question 5

Water table

Answer 5

The top of the ground water

Question 6

Pores

Answer 6

Tiny spaces between soil grains

Question 7

Permeable soil

Answer 7

One with interconnected pores

Question 8

Leachate

Answer 8

A brown liquid that garbage makes

Question 9

Hydrocarbons that dissolve

Answer 9

Carried by water in the soil and can spread over a wide area

Question 10

Non dissolving hydrocarbon

Answer 10

Coats soil grains and completely fill the pores between the grains

Question 11

Dispersion

Answer 11

Scattering of a substance away from its source

Question 12

Dilution

Answer 12

Reduces the concentration of a pollutant by mixing the polluting substance with large quantities of air or water

Question 13

Biodegradation

Answer 13

“Bio” means living things and “degrade” means break up

Question 14

Where do micro organisms live

Answer 14

Soil and water

Question 15

Where do algae live

Answer 15

The soil surface and can produce their own organic compounds by photosynthesis

Question 16

Aerobic biodegradation

Answer 16

“Aero” means air; aerobic means with air

Question 17

Anaerobic environment

Answer 17

“An” means without; anaerobic means without air

Question 18

Phytoremediation

Answer 18

Technique that can be used to reduce the concentration of harmful chemicals in the soil or groundwater
“Phyto” means plant and “remediation” means concentration or cure

Question 19

Photolysis

Answer 19

Breakdown (lysis) of compounds by sunlight (photo)
Ex: formation of the ozone

Question 20

Biomagnification

Answer 20

The increase in concentration of a chemical or element as it moves up the food chain
Ex: Mercury

Question 21

Where does Mercury come from

Answer 21

Emissions from coal fired power plants, waste, incinerators and commercial boilers

Question 22

Crude oil

Answer 22

Mixture of many chemicals which contains hundreds of different molecules in all shapes and sizes

Question 23

WHMIS

Answer 23

Workplace Hazardous Materials Information System

Question 24

MSDSs

Answer 24

Material Safety Data Sheets

Question 25

What are MSDS

Answer 25

Gives a detailed description of the product; composition, physical appearance and chemical characteristics

Question 26

What do MSDS describe

Answer 26

The precautions that you should take when handling, using, transporting and disposing of product.

Question 27

What else do MSDS provide

Answer 27

Details of the health affects, first aid treatments and spill procedures

Question 28

What detailed information should be provided on a product

Answer 28

• Intended use, ingredients and chemical properties
• Instructions for use and safety precautions
• Health affects, environmental affects, toxicity to humans and first aid instructions