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Science > Environmental Chemistry > Flashcards

Environmental Chemistry Flashcards

1
Q

What percent of air is nitrogen

A

78%

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2
Q

How can nitrogen be fixed

A

Bacteria in the soil
Bacteria on nodes found at the end of plant roots
Lightning

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3
Q

What does this stand for? 12-28-12

A

12% nitrogen compound
28% phosphorus compound
12% potassium compound

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4
Q

what is a pesticide?

A

kill or control insects

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5
Q

what is a herbicide?

A

kill or control weed

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6
Q

what is a fungicide?

A

kill fungi

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7
Q

5 ways to change concentration of chemicals

A

Agricultural Activities
Solid Waste
Waste Water
Fuel Combustion
Industrial Processes

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8
Q

What is an Acid

A

Compound that dissolves in water, and the pH is less than 7

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9
Q

What is a base

A

Compound that dissolves in water and the pH is higher than 7

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10
Q

What is neutralization

A

the process where an acid reacts with a base and it becomes neutral

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11
Q

How much more acidic is a pH of 6 than a pH of 2

A

10,000

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12
Q

How much more basic is a pH of 14 than a pH of 9

A

100,000

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13
Q

What is an inorganic compound

A

compound that does not contain carbon

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14
Q

What is an organic compound

A

compound that contains carbon

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15
Q

What are nine elements essential in large quantities for growth and life?

A

Carbon
Hydrogen
Oxygen
Nitrogen
Phosphorus
Potassium
Magnesium
Calcium
Sulfur

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16
Q

What are the 3 ways for plants to get water and nutrients

A

diffusion
osmosis
active transportation

17
Q

What is diffusion

A

diffusion is the movement of particles from an area of high concentration to low concentration

18
Q

What is osmosis

A

Osmosis is the diffusion of water.
water will move from the soil (higher
concentration) into the roots (lower
concentration)

19
Q

what is active transportation

A

Active transport is the movement of
particles from an area of low
concentration to an area of high
concentration

20
Q

What is Ingestion

A

Ingestion is the process of taking in food
food is broken down physically

21
Q

What is a substrate

A

A substrate is a material on which an organism lives, moves or feeds on

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