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Envirochemistry #1 Review

Total questions: 66

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

Which of the following would be the best place to find organic compounds?

a)

the atmosphere

b)

rocks and minerals

c)

the tissues of living things

d)

abiotic material

2.
Which of the following elements is required in an organic compound?
a)
nitrogen
b)
oxygen
c)
carbon
d)
sodium
3.

Is NaCl (table salt) a(n) Organic or Inorganic Compound?

a)
Inorganic
b)
Organic
4.
Which compound is inorganic?
a)
Glucose (C₆H₁₂O₆)
b)
Ethane (C₂H₆)
c)
Carbon Dioxide (CO₂)
d)
Stearic Acid (C₁₈H₃₆O₂)
5.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
6.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
7.

Classify as organic or inorganic

Categorize the following

fossil fuels

water

nucleic acids

white sugar

minerals

salt

vitamins

oxygen

Organic
Inorganic
8.

Compound Function:  to provide energy for metabolism, can be broken down into sugars

a)
Lipids
b)
Proteins
c)
Nucleic Acids
d)
Carbohydrates
9.

Compound Function: pass down genetic information

a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
10.

Which biomolecule helps form structural molecules for muscles and enzymes?

a)

Nucleic Acid

b)

Carbohydrate

c)

Protein

d)

Lipids

11.

Which biomolecule is responsible for insulation and long-term energy storage as fat?

a)

Protein

b)

Nucleic Acid

c)

Lipid

d)

Carbohydrate

12.

If you want to promote the growth of leafy vegetables like lettuce, what kind of fertiliser should you add?

a)

one high in nitrogen

b)

one high in phosphorus

c)

one high in potassium

d)

one low in nitrogen

13.

If you want to encourage strong roots, what nutrient does your plant need lots of?

a)

nitrogen

b)

phosphorus

c)

potassium

14.

If you drop iodine solution on bread, it changes to Black. What does this show?

a)

Bread contains protein

b)

Bread contains sugar

c)

Bread contains starch

d)

Bread contains lipids

15.

Tara conducted several tests on a mystery solution. Her results were as follows:

*Biuret's = purplish/violet; *Benedict's = orange; *Iodine = black, brown paper dried opaque.

Which biomolecules were present in the mystery solution?

a)

protein

b)

lipid

c)

sugar

d)

starch

16.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

17.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

18.

A pH level of 7 indicates

a)

acid

b)

base

c)

neutral

d)

none of the following

19.

Which of the following is an acid?

a)

soap

b)

baking soda

c)

orange juice

d)

pure water

20.

What would be considered a weak base?

a)

3

b)

14

c)

8.2

d)

11.6

21.

Which of the following is true about acids and bases?

a)

The lower the pH, the stronger the acid

b)

the higher the pH, the stronger the acid

c)

The lower the pH, the more neutral the acid

d)

The higher the pH, the weaker the base

22.

What would be considered the strongest base?

a)

8

b)

14

c)

7.8

d)

11.6

23.
A substance that changes color when mixed with an acid or base is a(n) ___.
a)
indicator
b)
neutralizer
c)
corrosive
d)
electricity
24.

What colour does bromothymol blue turn in the presence of a strong acid?

a)

yellow

b)

green

c)

blue

d)

colorless

25.

According to the pH scale, which item is more acidic than lemons?

a)

battery

b)

vinegar

c)

milk

d)

blood

26.
The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
a)

neutral

b)

basic

c)

acidic or basic.

d)

acidic

27.

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper and a red litmus paper into the substance. Both come out blue. The substance in the beaker

a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
28.

Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink. What type of chemical does Carrie have?

a)

Carrie has a neutral chemical.

b)

Carrie has an acidic chemical.

c)

Carrie has a basic chemical.

d)

The type of chemical Carrie has cannot be determined.

29.

According to the pH scale, which of the following would be true?

a)

baking soda is a weak base while drain cleaner is a strong base

b)

lemon is a weaker acid than a banana

c)

tomato and soap are acidic

d)

vinegar is less acidic than an apple

30.

Which species will have the largest population in neutral water?

a)

A

b)

B

c)

C

d)

D

31.

Which species decrease in concentration as the water gets more basic? (check all that apply)

a)

A

b)

B

c)

C

d)

D

32.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
33.
Explain what happens when a strong acid and a strong base are poured into the same container.
a)
they form separate layers
b)
they mix physically but not chemically
c)
they break apart into separate elements
d)
they react chemically to form a salt
34.

A bee sting is acidic and can be neutralized by?

a)

water

b)

salt

c)

acid

d)

a base

35.

Excess acids in stomach can be treated with

a)

antacid to neutralize the acid

b)

antacid to decrease the pH

c)

vinegar to neutralize the acid

d)

milk to decrease the pH

36.

The products of a neutralization reaction are usually...

a)

salt and water

b)

an acid and a base

c)

a neutral solution

d)

carbon dioxide and oxygen

37.

The reactants in a neutralization reaction are always...

a)

salt and water

b)

an acid and a base

c)

a neutral solution

d)

carbon dioxide and oxygen

38.

The solution will be neutral at which point on the graph shown?

a)

1

b)

2

c)

3

d)

4

39.

How much base was needed to neutralize the acid?

a)

20 mL

b)

7 mL

c)

40 mL

d)

15 mL

40.

Which organism in the food web would

contain the highest concentration of chemical pollutants?

a)

producers

b)

primary consumers

c)

secondary consumers

d)

tertiary consumers

41.

Which organism shown in the food chain above would contain the greatest concentration of chemical pollutants?

a)

phytoplankton

b)

krill

c)

tuna

d)

shark

42.
Identify the process shown in this diagram.
a)
Extinction
b)
Toxin Accumulation
c)
Pollution
d)
Biomagnification
43.
Which organism in this diagram has the highest DDT concentration?
a)
Zooplanktons
b)
small fish
c)
large fish
d)
Fish-eating birds
44.

What type of sediment tends to be the most impermeable?

a)

sand

b)

clay

c)

silt

d)

rocks

45.

If water can easily move between cracks of a rock, we can say that...

a)

water is permeable

b)

rock is permeable

c)

rock is impermeable

d)

water is impermeable

46.

What is the relationship between soil type/particle size and permiability (as shown by the bar graph below)?

a)

The larger the particle size, the slower the permeability rate

b)

The smaller the particle size, the faster the permeability rate

c)

There is no relationship between particle size and permeability

d)

The larger the particle size, the faster the permeability rate

47.

Which material has the highest permeability?

a)

Gravel

b)

Sand

c)

Clay

48.

Which mode of chemical transport is shown here?

a)

absorption

b)

inhalation

c)

ingestion

d)

biomagnification

49.

Which mode of chemical transport is shown here?

a)

absorption

b)

inhalation

c)

ingestion

d)

biomagnification

50.

Which mode of chemical transport is shown here?

a)

absorption

b)

inhalation

c)

ingestion

d)

biomagnification

51.

What process spreads pollution through the air?

a)

dispersion

b)

deposition

c)

biomagnification

d)

leaching

52.

What process drops pollutants on the ground?

a)

dispersion

b)

deposition

c)

biomagnification

d)

leaching

53.

What process spreads pollutants through the soil into groundwater?

a)

dispersion

b)

deposition

c)

biomagnication

d)

leaching

54.

Which process concentrates pollutants as they move through the food chain?

a)

dispersion

b)

deposition

c)

leaching

d)

biomagnification

55.

If winds are coming from the northwest, which site will get the most air pollution from the factory?

a)

Site A

b)

Site B

c)

Site C

d)

Site D

56.

If winds are coming from the northwest, where should you build your acreage home if you want to enjoy the least air pollution from the factory?

a)

Site A

b)

Site B

c)

Site C

d)

Site D

57.

If winds are coming from the northwest, how will the pollution from the factory travel?

a)

dispersion will carry the pollution from the factory and deposit it at Site D

b)

dispersion will carry the pollution from the factory and deposit it at Site A

c)

deposition will carry the pollution from the factory and disperse it at Site D

d)

deposition will carry the pollution from the factory and disperse it at Site A

58.

Which of the following would increase the spread of pollution?

a)

less wind

b)

stronger river current

c)

heavier particles

d)

lining a landfill with clay

59.
Which of these is a MAJOR cause of acid rain?
a)
spraying pesticides on crops
b)
burning fossil fuels for energy
c)
dumping sewage in river systems
d)
using uranium to generate electricity
60.
The illustration provided shows a river and four cities on that river. When the water from the river was sampled at location X, it was determined to be polluted with various chemicals. What would be the most likely source for this pollution?
a)
City 1 and City 2
b)
City 2 and City 3
c)
City 3 and City 4
d)
City 1 and City 4
61.

A paper company wants to build a paper mill in the watershed where a village exists. In order to minimize potential pollution to the village, which of the following locations is the best to build the mill?

a)

At the highest point in the watershed

b)

Downstream from the village

c)

Closest to a freshwater stream or river

d)

Nearest to the main street of the village

62.

What is the manipulated variable in this experiment?

a)

Soil type/particle size

b)

permeability

c)

particle size and permeability

d)

bar graph

63.

Which soil is least permeable to water?

a)

fine sand

b)

course sand

c)

gravel

64.

Which soil was the most permeable to water?

a)

A

b)

B

c)

C

65.

Which soil would be most effective at preventing leaching?

a)

A

b)

B

c)

C

66.

What is the responding variable in the experiment?

a)

soil type

b)

amount of drain water

c)

cotton wool

d)

amount of water poured into soil

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