What is an advantage of solar energy?

Pollution free and doesn't create greenhouse gases.

compound that makes hydroxide ions.

What is an advantage of wind energy?

wind farms can be built quickly

Acid base indicators are chemicals that...

change colour to show if a solution is acid, base or neutral

Define supersaturated solution

solution that contains more solute than the solvent can hold

The disadvantages of using nuclear energy include all of the following EXCEPT

the amount of CO2 released by the reactors

What is geothermal energy?

energy generated from the heat of the earth

A liquid where Red and Blue litmus paper both turn blue

What's a Disadvantage to Wind?

The area the turbines take up space

Mix that forms when one substance evenly dissolve in another

How could you add more solute to a saturated solution?

increase the temperature of the solvent.

Disadvantages of non-renewable energy

Contamination, toxic environmental catastrophes,

Which is a disadvantage of wind turbines?

Presents threats to wildlife specifically birds

a substance whose particles are dissolved in a solution

Disadvantages of renewable energy

Not found everywhere and can be difficult to obtain consistently

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Review - Spring Chem Final Exam

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Answers

1
Which is the molar mass of NaCl?
58 g/mol
22.9 g/mol
35.45 g/mol
60 g/mol
2
The definition of 1 mole is
22.4 L of gas
6.02x1023 particles
molar mass
all of the above
3
An area of land that drains into a particular river, lake or other body of water is a:
brackish
estuary
eutrophication
watershed
4
A solution holds less than the maximum amount of solute at a given temperature.
saturated
unsaturated
dilute
supersaturated
5
What is the molar mass of Lithium ?
6.94
1.00
9.01
10.81
6
What is an advantage of solar energy?
They can heat up my food.
They are pretty.
Pollution free and doesn't create greenhouse gases.
It gives me an amazing tan.
7
What is an Endothermic Reaction?
Burning sugar
Making ice cubes
A candle flame
Melting ice cubes
8
what is a base?
a compound that partially dissolves.
compound that makes hydrogen ions.
compound that makes hydroxide ions.
a compound that does not dissolve.
9
What is an advantage of wind energy?
does not rely on weather
wind turbines produce CO2
wind farms can be built quickly
wind farms can be built anywhere
10
A disadvantage of solar PV is...
cost
being destructive
oxygen
oil
11
Acid or Base
Acid
Base
12
Acid base indicators are chemicals that...
change colour depending on the temperature
always turn red in acid solution
always turn blue in acidic solution
change colour to show if a solution is acid, base or neutral
13
What type of Reaction is this?
Synthesis
Double Replacement
Single Replacement
Combustion
14
What type of reaction is this?
Synthesis
Replacement
Decomposition
15
Which of the following describes a substance that is formed because of a chemical reaction?
reactant
product
yield
subscript
16
What is the molar mass of CO₂ ?
44.0
58.0
28.0
56.0
17
Define supersaturated solution
solution that contains ions
solution that contains more solute than the solvent can hold
solution that contains less solute than the solvent can hold
solution that contains only electrolytes
18
The disadvantages of using nuclear energy include all of the following EXCEPT
the amount of CO2 released by the reactors
reactor accidents
the possibility of using radioactive fuels in weapons
radioactive waste disposal
19
Is this exothermic or endothermic?
impossible to tell
endothermic
neither
exothermic
20
Eastern Kentucky's land is composed of mountains and cliffs because
It is mostly made of alluvium
It is mostly made of limestone
It is mostly made of shale
It is mostly made of sandstone
21
What type of reaction is this?
Decompostion
Combustion
Single Replacement
Dissociation
22
What is a advantage to solar energy
Lower gas prices
Less turkeys
Lower hot water prices
Lower electric ⚡️ bills
23
What is geothermal energy?
energy generated from heating plants
energy created from plants
energy generated by heating the earth
energy generated from the heat of the earth
24
Mechanical/Physical or Chemical Weathering
Neither
Mechanical-Physical
Chemical
25
Which one is the solute?
Glass
Salt
Water
Spoon
26
A base is:
A liquid where Red and Blue litmus paper both turn blue
A liquid where Red and Blue litmus paper both turn red
Water
Acid
27
Western Kentucky's land is composed of more flat, rich farmland because
It is mostly made of alluvium
It is mostly made of sandstone
It is mostly made of shale
It is mostly made of limestone
28
What is the molar mass of calcium?
30.01 g/mol
40.08 g/mol
41.00 g/mol
39.05 g/mol
29
Acid or Base
Acid
Base
30
Arrhenius defined an acid as a substance that:
accepts protons in solution
donates protons in solution
produce H+ ions in solution
produces ON ions in solution
31
What is the molar mass of oxygen?
16 g/mol
19 grams
8 g/mol
6 g/mol
32
Balance the following reaction
1; 1; 1; 1
2; 1; 2; 1
1; 2; 1; 1
2; 2; 1; 1
33
What's a Disadvantage to Wind?
The area the turbines take up space
Not this answer
The population of Human Beings
Take ups up all the wind
34
Define solution
Mix that forms when one substance evenly dissolve in another
a substance that changes color in the presence of a base
compound that produce hydroxide ions when dissolved in water
a amount of solute dissolved in a certain amount of solvent
35
Which of the following is a solution?
rice and beans
peas and carrots
salt and pepper
a cup of tea
36
How could you add more solute to a saturated solution?
increase the temperature of the solute.
decrease the temperature of the solute.
increase the temperature of the solvent.
use the incantation: "dissolvus patronus!"
37
What is the mass of one mole of Hydrogen?
1g
6.022x10E23g
6.022x10E23mol
2.8g
38
A cavity in the ground, especially in limestone bedrock
Subsidence Sinkhole
Collapse Sinkhole
none of them
Sinkhole
39
Disadvantages of non-renewable energy
Contamination, toxic environmental catastrophes,
The will never run out
They are expensive to mine
They smell gross
40
What is the molar mass of KNO₃
101 g KNO3
98 g KNO3
42 g KNO3
81 g KNO3
41
What is the mass of one mole of CaO
40.0g
16.0g
56.0g
32.0 g
42
what does the molar mass of an element equal to?
number of atoms
atomic mass
atomic number
mass number
43
What is the molar mass of Silicon ?
28.08
78.96
32.06
118.7
44
What can Natural Resources also be referred to?
Raw Materials
All of the above
Materials Produced in a factory
Extractors
45
Endothermic, Exothermic or neither?
Neither
Exothermic
Endothermic
46
Which is a disadvantage of wind turbines?
Presents threats to wildlife specifically birds
Easy to install
Super quiet
The wind is always blowing
47
What is the molar mass of CaSO4?
198.2 g/mol
174.6 g/mol
136.1 g/ mol
256 g/mol
48
What is the mole ratio of CH₄to H₂O in the following equation from the combustion of methane?
2 : 1
1 : 1
2 : 2
1 : 2
49
What is a solute?
a substance in which a solution dissolves
a substance whose particles are dissolved in a solution
50
Disadvantages of renewable energy
Easy to access but can't always rely on it raining
Hard to dig out of ground
Not found everywhere but cheap
Not found everywhere and can be difficult to obtain consistently
51
Acid or Base
base
acid
52
What is an advantage of nuclear energy?
They don't produce air pollutants.
It's cheap.
It's not harmful to living organisms.
53
Central Kentucky's land is composed of rolling hills & is good for horses because
It is mostly made of alluvium
It is mostly made of sandstone
It is mostly made of limestone
It is mostly made of shale
54
What happens to matter during a chemical reaction?
Matter is neither created nor destroyed
some matter is created
Some matter is destroyed and some is created.
some matter is destroyed
55
What are some advantages of Nuclear Energy?
All of the above
Nuclear power plants do not produce greenhouse gases.
Nuclear power plants do not use up our fossil fuels.
Nuclear plants release less radioactivity than coal-fired .
56
The chemical reaction:8 Fe + S₈ → 8 FeS is
Combination
single replacement
Chemical
57
Which of the following is a solution
Salad
Pizza
Dirt
Sweet Tea
58
Calculate molar mass of AlCl3?
1 mole
133.5 g
100g
125g
59
a solution that contains the maximum amount of solute at a given temperature is
soluble
unsaturated
supersaturated
saturated
60
What is a chemical reaction?
When an object is cut
When an atom loses an electron
A process in which atoms rearrange to form new substances
When an element dissolves in water and makes a hydronium ion
61
How much of the Earths water is found in the oceans?
70%
97%
1%
2%
62
Which of the following are disadvantages to using nuclear energy?
Dangerous and unpredictable materials used (uranium)
All of the above
Very expensive to build and maintain
Radioactive waste can harm plant workers
63
When is something an Acid
All of the Above
pH 8-14
pH 0-6 and has more H+ ions
pH of 7
64
How is geothermal energy harvested?
Cold water is pumped down and cold water comes back up with the energy.
Cold water is pumped into the ground and hot steam rises up.
No water is pumped down and naturally occurring steam rises up.
Hot water is pumped down and cold water rises up.
65
What are Natural Resources?
animals and plants that people eat
things in nature that help humans
nature
people using what is in their homes
66
What does a base taste like
Sour
Bitter
Sweet
There is no taste
67
Acid or Base
Acid
Base
68
Which one is the solvent?
Salt
Water
Glass
Spoon
69
Is sodium hydroxide an acid or base?
Acid
Base
70
What is the mole ratio of O₂to CO₂ in the following equation from the combustion of methane?
2 : 1
1 : 1
1 : 2
2 : 2
71
This is an example of what type of reaction?
Double Replacement
Single Replacement
Decomposition
Combustion
72
Which pH is a base
12
7.0
7
4
73
What type of reaction is this?
Single Replacement
Dissociation
Double Replacement
Synthesis
74
Reactions that have a "+" heat of reaction are considered
Synthesis
Redox
Endothermic
Exothermic
75
What type of reaction is this?
Synthesis
Replacement
Decomposition
76
What is molar mass?
The mass of a substance, divided by its volume
The mass of a substance
The mass of one mole of a substance
The number of moles of a substance
77
In the world of chemistry, what is a mole?
A unit of time.
A representative unit to measure the amount of particles.
A very silly little creature.
A way to classify chemicals.
78
Balance the following reaction: ___CO(g) + ___O₂(g) → ____CO₂(g)
1, 1, 2
It is already balanced
2, 1, 2
2, 2, 1
79
What is the Molarity of a solution with 5 moles in 3 liters?
.6
1.67
5
6
80
What is a disadvantage of solar energy?
Doesn't make as much energy on cloudy days.
They take up too much space.
It doesn't work at all.
81
What is the chemical composition of Limestone
O2
CiO2
H
CaCO3
82
The main countries that mine natural resources are
Germany, U.S., France, The U.K.
China, India, Australia & Brazil
83
Challenge: Balance and Identify the type of the following reaction
2, 3, 1, 6 Double Replacment
2, 3, 1, 6 Single Replacement
4, 6, 2, 6 Double Replacement
1, 2, 3, 4 Combustion
84
What is the one of the natural resources
coal
brownies
chairs
candy
85
What type of chemical reaction always has one reactant?
synthesis
combustion
decomposition
combination
86
Which of the following is not an acid
NO3-
CH3COOH
H2SO4
HCl
87
Which of the following is not a base
NaOH
Ca(OH)2
NH3
Ca(NO3)2
88
The mass per mole is called what?
G/mol
Molar mass
Avogadro's number
6.02x10^23
89
Which of the following describes a substance that enters into a chemical reaction?
product
reactant
yield
coefficient
90
1 mole of carbon has how many carbon atoms?
6.02x1023
12
6
12,000
91
What are disadvantages of coal?
All of the above
Produces harmful pollutants
Lot of carbon emission
Destroy environment due to coal mining
92
What is weathering?
A supernatural process
the process in which rocks are broken into smaller pieces
Erosion
Sediment
93
A solvent is:
a detective
the substance in which the solute dissolves.
insoluble
94
what is the molarity of a solution that contains 5 mole of a substance in 10 liters of solution
8M
2M
5M
.5M
95
What is the molar mass of MgO?
40 g/mol
50 g/mol
45 g/mol
35 g/mol
96
Where do most elements come from?
Special rocks called minerals
The Ocean
Space
the core of the Earth
97
The mass per mole is called what?
6.02x10^23
Molar mass
G/mol
Avogadro's number
98
What reaction type is this?
Decomposition
Double Replacement
Combination/Synthesis
Single Replacement
99
When is something a Base
ph 0-6 and has more H+ ions
All of the Above
pH of 7
pH 8-14 and has more 0H- ions
100
The moles of solute per liter of solution is referred to as ___
molarity
the mass number
molality
molar mass

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