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Sem 2 Test 1 Review

Total questions: 80

Worksheet time: 2hrs 49mins

Name
Class
Date
1.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
2.
Thermal energy ALWAYS moves from _____ to _____.
a)
solid to liquid
b)
ice to water
c)
hot to cold
d)
solid to gas
3.
If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C? 
a)
-80,371.2
b)
44,938.6
c)
80,371.2
d)
112,575.9
4.
For a skillet, used for cooking, do you want a high or low specific heat
a)
High, so that it will need more energy to heat up
b)
Low, so that it will change temperature quickly
5.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
6.
How many Joules of energy are required to make 100 grams of ice at 0 οC completely melt?
a)
200 J
b)
400 J
c)
30,000 J
d)
2,000,000 J
7.
The unit Joules is for ___________
a)
heat energy
b)
temperature
c)
specific heat
8.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
9.

The graph shows the cooling curve of a substance.
Identify between which points heat is released.

a)
CD and FG
b)

CD and EF

c)
EF and FG
d)
DE and FG
10.
A metal cube at temperature of 10°C immersed in a liquid at temperature of 70°C.
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?
a)
Between 10°C and 70°C
b)
More than 70°C
c)
Less than 10°C
d)
Same as the room temperature
11.

Do molecules generally move faster at 45 C or 106 C?

a)

45 C because molecules have more energy than in 106C

b)

106 C because molecules have more energy than in 45C

c)

106 C because molecules have less energy than in 45C

d)

45C because molecules have less energy than in 106 C

12.

When you place the metal in boiling water, heat flows from the _________ to the _______.

a)

metal to the boiling water

b)

bottom of the metal to the top half of the metal

c)

bottom of the water to the top of the water

d)

boiling water to the metal

13.

Define ΔH

a)

Change in Specific Heat; Heat by one Degree Celsius

b)

Change in Temperature; the energy we calculate; Degree Celsius

c)

Change in Enthalpy; the energy/heat we calculate

d)

Change in Time; time travel

14.

Specific Heat is..

a)

the temperature initial minus temperature final

b)

the amount of heat/energy required to raise 1 gram of a substance by 1°C (or K) aka "C"

c)

the temperature final minus temperature initial

d)

the item in a system with given weight in grams

15.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
16.
The first law of thermodynamics states that energy is
a)
created
b)
destroyed
c)
conserved
d)
created and destroyed
17.

Gold cools more quickly than aluminum. This means …

a)

gold has a larger heat capacity

b)

aluminum has a larger heat capacity

c)

they have the same heat capacity

d)

What is heat capacity?

18.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
19.
To turn a liquid into a gas, you _____ energy.
a)
Add
b)
Remove
20.
Warm air rises and the cool air sinks demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
21.

To freeze water …

a)

energy must be added to the water

b)

energy must be removed from the water

22.

An electric stove top works primarily through

a)

thermal conduction

b)

thermal convection

c)

thermal radiation

23.

According to the First Law of Thermodynamics, which of the following statements is true?

a)

Heat is a form of energy that can be created and destroyed.

b)

Heat can be transferred from a cold object to a hot object without external energy.

c)

Heat is a form of energy that can neither be created nor destroyed, only transferred.

d)

Heat is not a form of energy and does not follow the law of conservation.

24.

What is the term used to describe the transfer of thermal energy through empty space, as shown in the second diagram?

a)

Convection

b)

Conduction

c)

Radiation

d)

Insulation

25.

Match the following

a)

Zeroth Law of Thermodynamics

1.

Law of Thermal Equilibrium

b)

First Law of Thermodynamics

2.

Law of Conservation of Energy

c)

Second Law of Thermodynamics

3.

Law of Disorder

26.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
27.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
28.

O2(g) + 2 H2 (g) → 2 H2O (g) + EnergyO_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy  

a)

endothermic

b)

exothermic

29.

6 CO2+ 6 H2O + Energy → C6H12O6 + 6 O26\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2

a)

endothermic reaction

b)

exothermic reaction

30.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

31.

____ reactions usually feel cold.

a)

endothermic

b)

exothermic

32.

Are the particles moving faster or slower as time goes on?

a)

Faster

b)

Slower

33.

Is the substance gaining or losing energy as time goes on?

a)

Gaining

b)

Losing

34.

What state/phase is the object likely from points A to B?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

35.

What is happening to the particles in the substance between points A and B?

a)

Melting

b)

Freezing

c)

Speeding Up

d)

Slowing Down

36.

What is happening to the particles in the substance between points D and E?

a)

Melting

b)

Freezing

c)

Vaporizing

d)

Sublimating

37.

Is the substance gaining or losing energy over time?

a)

Gaining

b)

Losing

38.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

39.

The graph above is from which type of reaction?

a)

Endothermic reaction

b)

Exothermic Reaction

40.

The graph above is from which type of reaction?

a)

Endothermic reaction

b)

Exothermic reaction

41.

What is the sign of ΔH\Delta H   for an endothermic reaction?

a)

ΔH\Delta H is +

b)

ΔH\Delta H is -

42.

What is the sign of ΔH\Delta H  for an exothermic reaction?

a)

ΔH\Delta H is +

b)

ΔH\Delta H is -

43.

A reaction that causes an increase in temperature is

a)

endothermic

b)

exothermic

44.

The vertical axis of this graph represents the:

a)

kinetic energy

b)

potential energy

c)

free energy

d)

heat energy

45.
What kind of reaction is this?
a)
Endothermic
b)
Exothermic
c)
Cannot be determined
46.

Which letter shows the enthalpy change (delta H) of this reaction?

a)

A

b)

B

c)

C

d)

D

47.
Which letter corresponds to the activation energy of the forward reaction?
a)
A
b)
B
c)
C
d)
D
48.

Organize these options into the right categories

Categorize the following

Melting

Vaporization

Sublimation

Endothermic Reactions

Freezing

Condensation

Deposition

Exothermic Reactions

Absorbs energy
Releases Energy
49.

The following statements are true for entropy EXCEPT

a)

entropy is the measure of molecular disorder

b)

entropy is greater if matter is more dispersed

c)

gases have more entropy than liquids of the same substance and temperature

d)

lowering the temperature causes entropy to increase.

50.

Which one of the following processes produces a decrease in the entropy of the system?

a)

dissolution of solid KCl in water

b)

mixing of two gases into one container

c)

freezing water to form ice

d)

melting ice to form water

51.

A reaction that is not spontaneous at low temperature can become spontaneous at high temperature if ΔH is __________ and ΔS is __________.

a)

+, +

b)

-, -

c)

+, -

d)

-, +

e)

+, 0

52.

For a reaction to be spontaneous under standard conditions at all temperatures, the signs of ΔHΟ and ΔSΟ must be __________ and __________, respectively.

a)

+, +

b)

+, -

c)

-, +

d)

-, -

e)

+, 0

53.
A reaction has a positive ΔH and a positive ΔS. Which of the following is true?
a)
It will be spontaneous at all temperatures.
b)
It will be nonspontaneous at all temperatures.
c)
It will be spontaneous at low temperatures.
d)
It will be spontaneous at high temperatures.
54.

A reaction has a negative ΔH and a positive ΔS. Which of the following is true?

a)
It will be spontaneous at all temperatures.
b)
It will be nonspontaneous at all temperatures.
c)
It will be spontaneous at low temperatures.
d)
It will be spontaneous at high temperatures.
55.

A reaction has a positive ΔH and a negative ΔS. Which of the following is true?

a)
It will be spontaneous at all temperatures.
b)
It will be nonspontaneous at all temperatures.
c)
It will be spontaneous at low temperatures.
d)
It will be spontaneous at high temperatures.
56.

A reaction has a negative ΔH and a negative ΔS. Which of the following is true?

a)
It will be spontaneous at all temperatures.
b)
It will be nonspontaneous at all temperatures.
c)
It will be spontaneous at low temperatures.
d)
It will be spontaneous at high temperatures.
57.
Spontaneity is determined by....
a)
enthalpy only
b)
entropy only
c)
enthalpy and entropy
d)
enthalpy, entropy, and temperature
58.
Reactions tend to be spontaneous if they are exothermic.
a)
True
b)
False
59.

If a reaction has a      - Δ\Delta  H  then it is

a)

endothermic

b)

exothermic

60.

If a reaction has a     + Δ\Delta  H  then it is

a)

endothermic

b)

exothermic

61.

Match the following

a)

-ΔH, -ΔS

1.

Likely Spontaneous at Low temperatures

b)

-ΔH, +ΔS

2.

Always Spontaneous

c)

+ΔH, -ΔS

3.

Never Spontaneous

d)

+ΔH, +ΔS

4.

Likely Spontaneous at High temperatures

62.

Organize these options into the right categories

Categorize the following

Temperature & Pressure

Volume & Pressure

Temperature and Volume

Indirect Relationship
Direct Relationship
63.

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as

a)

real gas

b)

ideal gas

c)

imaginary gas

d)

perfect gas

64.

If a gas has the same temperature throughout, which gas molecule has the highest average velocity?

a)

O2

b)

H2O

c)

H2

d)

Xe

65.

For a fixed amount of gas at a constant temperature, the volume increases as the pressure...

a)

remains steady.

b)

increases.

c)

decreases.

d)

fluctuates.

66.

The pressure exerted by a gas does not depend on

a)

temperature.

b)

volume.

c)

number of moles present.

d)

the identity of the gas.

67.

Reorder from LOWEST (left) kinetic energy to HIGHEST (energy) kinetic energy

a)

solid

b)

liquid

c)

gas

1)
2)
3)
68.

How is temperature related to the movement of particles?

a)

directly

b)

indirectly

69.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

The pressure will increase

b)

The pressure will decrease

c)

The pressure will remain constant

d)

The pressure will equalize

70.

SLOW DOWN FOR MATH

A sample of 0.010 mole of oxygen gas is confined at 127°C and 0.80 atm. What would be the pressure of this sample at 27°C and the same volume?

a)

0.10 atm

b)

0.20 atm

c)

0.60 atm

d)

0.80 atm

71.

Match the following units to their names.

a)

Volume

1.

L

b)

Temperature

2.

K

c)

Pressure

3.

atm

d)

Moles

4.

mol

72.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
73.
Using the ideal gas law and the ideal gas constant what information do you need to determine the volume of the gas if you know the pressure and the temperature?  
a)
the molecular mass of the gas 
b)
the number of moles of the gas
c)
the density of the gas 
d)
the percentage composition of the gas 
74.

SLOW DOWN FOR MATH

You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?

a)

0.2 L

b)

20 L

c)

It would stay at 10L

d)

15 L

75.

SLOW DOWN FOR MATH

If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

a)

205 K

b)

200 K

c)

2046 K

d)

2000 K

76.

SLOW DOWN FOR MATH

Consider a sample of oxygen gas at 27° C with a volume of 9.55L at a pressure if 2.97 atm.  The pressure is changed to 8.25 atm and the gas is heated to 125° C.  What’s the new volume? 

___ L

Round to 3 significant figures and use 273 K = 0 C

a)

4.56 L

b)

15.9 L

c)

16.0 L

d)

5.00 L

77.

SLOW DOWN FOR MATH

If I have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 L, what will the new pressure inside the piston be?

a)

1.75 atm

b)

1.8 atm

c)

1.3 atm

d)

1.29 atm

78.

What is 50 °C in Kelvin?

a)

223

b)

323

c)

100

d)

50

79.

Match the following

a)

1.

Combined

Gas Law

b)

2.

Gay-Lussac's Law

c)

3.

Boyle's Law

d)

4.

Ideal Gas Law

e)

5.

Charles' Law

80.

How many graphs of Carbon Dioxide are present in a 4 liter balloon at .75atm and 290K

a)

.134g

b)

5.9g

c)

7.5g

d)

.003g

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