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22-23 Chemistry Final Review

Total questions: 81

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

What is the name of this part?

a)

base

b)

leg

c)

arm

d)

eyepiece

2.

What is the name of this part?

a)

base

b)

leg

c)

arm

d)

eyepiece

3.

What is the name of this part?

a)

stageclips

b)

leg

c)

body tube

d)

coarse adjustment knob

4.

What is the name of this part?

a)

objective lens

b)

base

c)

diaphragm

d)

coarse adjustment knob

5.

What is the name of this part?

a)

objective lens

b)

eyepiece/ocular lens

c)

diaphragm

d)

slide

6.

What is the name of this part?

a)

fine adjustment knob

b)

eyepiece/ocular lens

c)

stage

d)

body tube

7.

What is the name of this part?

a)

arm

b)

eyepiece/ocular lens

c)

nosepiece

d)

objective lens

8.

What is the name of this part?

a)

stageclips

b)

stage

c)

nosepiece

d)

slide

9.

What is the name of this part?

a)

stageclips

b)

stage

c)

objective lens

d)

slide

10.
The higher you go, the air becomes _____ _____.
a)
More dense
b)
Less dense 
11.
This is the layer where meteors, or shooting stars, burn up.
a)
Troposphere
b)
Stratosphere
c)
Mesosphere
d)
Thermosphere
12.
What happens to the density (thickness)/air pressure of the air as you increase in altitude?
a)
density increases
b)
density decreases
c)
density stays the same
d)
density disappears
13.
Which of the following is the correct order of the atmosphere layers from Earth to space?
a)
troposphere, stratosphere, mesosphere, thermosphere, exosphere
b)
troposphere, mesosphere, thermosphere, exosphere, stratosphere
c)
thermosphere, stratosphere, mesosphere, troposphere, exosphere
d)
troposphere, stratosphere, mesosphere, exosphere, thermosphere
14.

How do scientist think that early atmosphere was probably formed?

a)

Gases from volcanoes

b)

Lava from volcanoes

c)

Gases released from bacteria

d)

They are unsure how it is formed

15.

True or False: The first organisms in the ocean did not use oxygen.

a)

True

b)

False

16.

Modern day atmosphere has approximately what percentage of the air is Oxygen ?

a)

1%

b)

21%

c)

78%

d)

52%

17.

True or False: No animals would have been able to breathe in Earth's early atmosphere.

a)

True

b)

False

18.

How long ago did the Great Oxygenation Event Occur?

a)

1.6 billion years ago

b)

2.5 billion years ago

c)

300 million years ago

d)

653 million years ago

19.

Earth's early atmosphere had no

a)

gasses

b)

volcanoes

c)

water vapor

d)

free oxygen

20.

The first prokaryotes did not require oxygen and were

a)

anaerobicc

b)

aerobic

c)

both aerobic an anaerobic

21.

This bacteria formed 3.5 bya and was photosynthetic and release oxygen into the atmosphere.

a)

cyanobacteria

b)

E. coli

c)

archae bacteria

d)

mitochondria

22.

The release of oxygen into the atmosphere was so massive that this happened to the anaerobic bacteria

a)

mass extinction

b)

massive growth

c)

evolution into eubacteria

d)

they grew larger

23.
The dissolving medium in a solution is called ... 
a)
colloid
b)
solution
c)
solute
d)
solvent
24.
The substance dissolved in a solution is called ... 
a)
colloid
b)
solution
c)
solute
d)
solvent
25.
What is the universal solvent?
a)
salt
b)
sugar
c)
water
d)
ice
26.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
27.

Which of these pH values would indicate that a solution is a weak base?

a)

4

b)

5.6

c)

8

d)

13

28.

The pH actually measures:

a)

the strength of an acid.

b)

the strength of hydrogen ions.

c)

the concentration of hydrogen ions.

d)

the strength of a base.

29.
__________ are made up of solutes and solvents.
a)
Solutions
b)
Suspensions
c)
Heterogeneous Mixtures
d)
Pure Substances
30.
Air
a)
Heterogeneous
b)
Homogeneous
31.
Soil
a)
Heterogeneous
b)
Homogeneous
32.
Sugar water
a)
Heterogeneous
b)
Homogeneous
33.
The substance being dissolved to form a solution is the __________.
a)
solvent
b)
solute
c)
precipitate
d)
mixture
34.

The colligative property of a solution is

a)

Vapour pressure

b)

Osmotic pressure

c)

Boiling point

d)

Freezing point

35.

A membrane which only allows solvent molecules to flow through it is called

a)

permeable membrane

b)

transparent membrane

c)

elastic membrane

d)

semipermeable membrane

36.
Osmosis is the diffusion of _____ across a selectively permeable membrane.
a)
food
b)
air
c)
water
d)
oxygen
37.
In a solution, salt is considered the _______.
a)
solvent
b)
solute
c)
solution
38.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
39.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
40.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
41.

A base is a substance

a)

That releases OH- ions when dissolved in water

b)

That releases H+ ions when dissolved in water

c)

Does not release any ions when dissolved in water

d)

None of the above

42.

An acid

a)

is a substance that releases H+ ions when dissolved in water

b)

is a substance that does not release any ions when dissolved in water

c)

is a substance that releases OH- when dissolved in water

d)

releases an equal amount of OH- and H+ ions when dissolved in water

43.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
44.
According to the image, the substance tested is a...
a)
Acid
b)
Base
c)
Neutral
d)
Strong Acid
45.
One benefit of Red Cabbage Juice Indicator is that it...
a)
Tells you the exact pH 
b)
Is very accurate
c)
It is very expensive
d)
It can be made from materials you have at home
46.
What does the pH scale range from?
a)
0-10
b)
2-15
c)
1-5
d)
0-14
47.

When mixed with an indicator (cabbage juice), what color do bases turn?

a)

dark red, bright pink, magenta

b)

purple

c)

blue, green, yellow

d)

brown, black, grey

48.

When mixed with an indicator (cabbage juice), what color do acids turn?

a)

dark red, magenta, bright pink

b)

purple

c)

blue. green, yellow

d)

brown, black, grey

49.

What causes coral bleaching?

a)

oil spills

b)

warmer water temperatures

c)

overfishing

d)

red tide

50.
What is it called when coral loses its color?
a)
bleaching
b)
white out
c)
colorization
51.

______________________ is needed by corals, mollusks, sponges, and crustaceans to make their skeletons, shells, spicules, and structures.

a)

calcium carbonate

b)

sodium chloride

c)

carbon dioxide

d)

nitrogen gas

52.

When corals ejects symbionts from gastrodermis cells it is called

a)

A. bleaching

b)

B. eutrophication

c)

C. nitrogen fixation

d)

D. subsiding

53.

What type of algae is found inside corals?

a)

Zooxanthellae

b)

Wakame

c)

Giant Kelp

d)

Bladder wrack

54.
How do zooxanthellae help corals? 
a)
Provide sugars to corals
b)
Provide oxygen to corals
c)
Provide pretty colors to corals
d)
Provide protection to corals
55.

Which one is NOT a coral polyp?

a)
b)
c)
d)
56.

Are corals living organisms ?

a)

YES

b)

NO

57.

WHY DOES THE ALGAE LIVE IN CORAL TISSUES?

a)

the algae prefers dark warm spaces

b)

they do not need each other

c)

The coral and algae rely on each other to survive

d)

the algae do not like to live on their own

58.
Ocean acidification begins with 
a)
pollution from ships
b)
carbon dioxide released from combustion
c)
dumping of waste from cities into the ocean
59.
Marine organisms make their shells from calcium and
a)
chloride
b)
carbonate
c)
seawater
60.
Carbon dioxide and seawater combine to form
a)
calcium carbonate
b)
carbon monoxide
c)
carbonic acid 
61.
Very slight increases in the acidity of seawater __________  marine organisms that make shells.
a)
doesn't bother
b)
has no effect on 
c)
is unhealthy and stresses
62.

Which molecule makes water acidic?

a)

Carbonate Ions

b)

Carbon Dioxide

63.

What happens to 1/4 of the greenhouse gases in the atmosphere?

a)

It is released into space.

b)

It gets absorbed by the ocean.

64.

According to this slide

a)

CO2 is causing marine life to die by "poisoning' the water

b)

CO2 is destroying sea shells

c)

CO2 is formed from the combustion of Octane

65.

This image demonstrates that

a)

There is a direct correlation with the atmospheric CO2 and the CO2 in seawater

b)

That pH of the ocean increases as the atmospheric CO2 increases

c)

That there is no correlation between pH of the ocean and atmospheric CO2

66.
As the ocean becomes more acidic, the pH of the water
a)
increases
b)
decreases
67.

Which is carbonate?

a)

HCO-

b)

H2CO3

c)

CO3-

d)

CO2

68.
The H+ ion is a(n)
a)
acid
b)
base
c)
neutral
69.

What does the blue line show?

a)

CO2 in the water

b)

Air temperature

c)

Carbon emissions

d)

pH of the water

70.

What does the orange line show?

a)

CO2 in the water

b)

Air temperature

c)

Carbon emissions

d)

pH of the water

71.

Increased ______ makes it difficult for certain organisms to form shells

a)

metabolism

b)

Bicarbonate

c)

immune responses

d)

Oxygen

72.

What will ocean acidification affect?

a)

seafood

b)

air quality

c)

biodiversity

d)

all of the above

73.

Ocean acidification is related to...

a)

climate change

b)

human impact

c)

fossil fuels

d)

all of the above

74.
What is the molar mass of C6H12O6?
a)

180.18 g/mol

b)

180.12 g/mol

c)

180.24 g/mol

d)

180.06 g/mol

75.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from  6 moles H2? 
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
76.
N2 +  3H2 → 2NH3 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
a)

6 mol H

b)

2 mol H

c)

3 mol H

d)

1 mol H

77.
2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)  
12.00 moles of NaClO3 will produce how many grams of O2?
a)
256 g of O2
b)
576 g of O2
c)
288 g O2
78.
B2H6 + 3O2 -->2 HBO2 + 2 H2O
 What mass of O2 will be needed to burn 36.1 g of B2H6?
a)
13.8 g O2
b)
3.86 mol of O2
c)
124 g O2
79.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
80.
Mg(s) + 2 HCl(aq)  -->  MgCl₂(aq)   + H₂(g)
How many moles of HCl are consumed in the production of 7.5 moles of MgCl₂?
a)
3.8 moles
b)
15 moles
c)
7.5 moles
d)
23 moles
81.
Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)
a)
1,2,2,2
b)
1,2,1,1
c)
2,1,1,1
d)
2,1,2,1

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