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Environmental Chemistry > T1-3 > Flashcards

T1-3 Flashcards

1
Q

What is a macro mineral

A

A mineral that your body needs 100mg or more A day to maintain health

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2
Q

What is a trace element?

A

A mineral that your body need 100mg or less a day to maintain health

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3
Q

What is an enzyme?

A

A special protein molecule that helps regulate chemical reactions in a living organism

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4
Q

What is a vitamin

A

A molecule that helps enzymes function in the body

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5
Q

What is a protein?

A

An organic nutrient made up of a chain of amino acids

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6
Q

What is a lipid?

A

An organic nutrient that does not dissolve in water

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7
Q

What is a carbohydrate?

A

An organic nutrient made of carbon, hydrogen, and oxygen

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8
Q

What is biological magnification?

A

When chemicals accumulate in the fatty tissues in large amounts in an organism

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9
Q

What is biological accumulation?

A

The process where chemicals accumulate in the tissues of organisms along the food chain

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10
Q

What is a herbicide?

A

A chemical used to control weeds

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11
Q

What is an insecticide?

A

A chemical used to control insects

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12
Q

What is a fungicide?

A

A chemical used to control moulds and fungi

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13
Q

What is a pesticide?

A

A chemical used to control pests

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14
Q

What does acidic mean?

A

To have a pH lower than seven and to turn litmus red

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15
Q

What does basic mean?

A

To have a pH over seven and to turn litmus blue

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16
Q

What is an acid

A

A chemical that produces an acidic substance

17
Q

What is a base?

A

A chemical that produces a basic substance

18
Q

What is acid precipitation?

A

Rain or snow that contains acid compounds from the air

19
Q

What is an indicator?

A

A chemical that changes colour to indicate whether a substance is an acid or a base

20
Q

What is litmus?

A

A mixture of plant compounds used as a chemical indicator

21
Q

What is oxidation

A

A chemical reaction in which oxygen combines with other elements to create a new substance

22
Q

What is a pH scale?

A

A scale that measures the acidity or alkalinity of a substance

23
Q

What is pH paper?

A

Paper saturated with a chemical to show whether a substance is an acid or base

24
Q

What is acid-base neutralization?

A

The combining of an acid and a base to produce salt and water

25
Q

What is leach?

A

A mineral dissolves in water and seeps downward into the water table

26
Q

What is heavy metal?

A

A metal with a high density (4g/mL+)

27
Q

What is liming?

A

The process of adding calcium carbonate to the environment

28
Q

What is a catalyst?

A

A substance that speeds up a chemical reaction without being used up in a reaction

29
Q

What is a catalytic converter?

A

A device that encourages complete oxidization during combustion

30
Q

What is a scrubber?

A

A device that uses a sorbent to reduce oxide emissions

31
Q

What is a nutrient?

A

A chemical used in food for energy, growth, cell repair, and body building

Environmental Chemistry (1 decks)

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