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Quiz Review Thermo (Basics) Quiz with Math

Total questions: 66

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

Freezing is ___________

a)

endothermic

b)

exothermic

2.

If heat flows into the system from the surrounding, then heat is taken as ------

a)

positive

b)

negative

3.

If heat is released by the system, the internal energy of the system decreases, then Q will be ____.

a)

negative

b)

positive

4.

The diagram represents two solids and the temperature of each. What occurs when the two solids are placed in contact with each other?

a)

Heat energy flows from solid A to solid B. Solid A decreases in temperature

b)

Heat energy flows from solid A to solid B. Solid A increases in temperature

c)

Heat energy flows from solid B to solid A. Solid B decreases in temperature.

d)

Heat energy flows from solid B to solid A. Solid B increases in temperature.

5.

Heat change at constant pressure is

a)

U

b)

ΔU

c)

H

d)

ΔH

6.

The faster the speed of molecules is, the higher the temperature is.

a)

True

b)

False

7.

The temperature is independent on the mean speed of the molecules.

a)

True

b)

False

8.

The _____ molecules we have and the faster they move, the thermal energy will be bigger.

a)

More

b)

Less

9.

Thermal energy is dependent on the:

a)

Speed of the molecules

b)

Number of molecules

c)

Mass of the molecules

d)

Temperature of the molecules

10.

Temperature is to ENERGY, as heat is to ____.

a)

Energy

b)

Work

11.

Heat is the amount of thermal energy gained or lost in the process.

a)

True

b)

False

12.

All matter is composed of particles that are in constant, random motion.  Because of this motion, the particles have ____ energy.

a)

Kinetic

b)

Nuclear

c)

Potential

d)

Mechanical

13.

The quantity that tells how hot or cold something is compared to a standard is ____ and it is related to the average kinetic energy of a substance.

a)

Heat

b)

Thermal energy

c)

Temperature

14.

Which has more internal energy, a bathtub full of cool water or a cup of hot water?

a)

Bathtub full of cool water

b)

Cup of hot water

15.

If a piece of aluminum is placed in contact with both a bathtub full of cool water and a cup of hot water, which way will heat flow?

a)

From the bathtub to the cup

b)

From the cup to the bathtub

16.

Energy is released, -ΔH

a)

Endothermic Reaction

b)

Exothermic Reaction

c)

Chemical Equilibrium

d)

Homogenous Reaction

17.

Energy is absorbed, +ΔH

a)

Endothermic Reaction

b)

Exothermic Reaction

c)

Chemical Equilibrium

d)

Heterogenous Reaction

18.

If 34673.10 J of heat are absorbed by 105.0 g of water when it is heated. The initial temperature of the water is 20.0°C; what is the final temperature of the water? The specific heat of water is 4.18 J/g•°C.

a)

79 C

b)

1380 C

c)

99 C

d)

1400 C

19.

A sample of iron receives 50 J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of  0.10 J/g°C, what is the mass of the iron sample?

a)

25 g

b)

30 g

c)

20 g

d)

50 g

20.

Melting is ___________

a)

endothermic

b)

exothermic

21.

Boiling is ___________

a)

endothermic

b)

exothermic

22.

Condensation is ___________

a)

endothermic

b)

exothermic

23.

During a phase change, the temperature ________.

a)

increases

b)

stays the same

c)

decreases

24.

When heating a liquid, the temperature ________.

a)

increases

b)

stays the same

c)

decreases

25.

If temperature decreases, the average kinetic energy ________.

a)

increases

b)

stays constant

c)

decreases

26.

How much energy is required to melt a 10g cube of ice at 0°C? (Which equation will you use?)

a)

Q = mΔH

b)

- Q = mΔH

c)

Q = mcΔT

d)

-Q = mcΔT

27.

How much energy is released to freeze a 10g cube of ice at 0°C? (Which equation will you use?)

a)

Q = mΔH

b)

- Q = mΔH

c)

Q = mcΔT

d)

-Q = mcΔT

28.

How much energy is released to when water is heated from 10⁰C to 90⁰C? (Which equation will you use?)

a)

Q = mΔH

b)

- Q = mΔH

c)

Q = mcΔT

d)

-Q = mcΔT

29.

How much energy is released to freeze water from 90⁰C to -10⁰C to ? (Select all the equations you will you use?)

a)

Q = mΔH

b)

- Q = mΔH

c)

Q = mcΔT

d)

-Q = mcΔT

30.

How much energy is needed to heat water from 10⁰C to 110⁰C? (Select all the equations you will you use?)

a)

Q = mΔH

b)

- Q = mΔH

c)

Q = mcΔT

d)

-Q = mcΔT

31.

Reorder the following from the lowest energy to the highest.

a)

solid

b)

liquid

c)

gas

1)
2)
3)
32.

Consider the Q = mΔH at each phase. Assume you have a 1 gram sample. Put the following phase changes in order from the least amount of energy to the highest.

a)

condensing

b)

freezing

c)

melting

d)

vaporization

1)
2)
3)
4)
33.

During a phase change, the temperature stays constant and _____ increases.

a)

Kinetic Energy

b)

Enthalpy

c)

Potential Energy

d)

Speed of the Particles

34.

When a sample is in the vapor state, the temperature increases and _____ increases.

a)

Kinetic Energy

b)

Enthalpy

c)

Potential Energy

d)

Speed of the Particles

35.

Which line segment represents the substance only in the solid state?

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

36.

Select all line segments in which the temperature stays constant.

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

37.

What is the boiling point of this substance?

a)

100 oC

b)

60 oC

c)

-60 oC

d)

20 oC

38.

Given the heating curve of a solid being heated at a constant rate, how long did it take to completely evaporate the substance after it reaches its boiling point?

a)

3 minutes

b)

4 minutes

c)

5 minutes

d)

8 minutes

e)

14 minutes

39.

The melting point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

40.

What can be concluded by comparing the lengths of the melting and boiling lines?

a)

It takes more energy to vaporize the sample than it does to melt it.

b)

It takes more energy to increase the temperature of the gas than the liquid.

c)

The substance stays at the boiling point for a short time.

d)

The substance prefers the gas phase over the other phases.

41.

Look at the slopes at each part of the graph. What can be concluded by comparing the slope of heating the liquid (water) versus that of the slope for ice or steam? (Choose all correct answers.)

a)

More energy is required to heat up water than it does to heat up ice or steam.

b)

Less energy is required to heat up water than it does to heat up ice or steam.

c)

cwater > cice and cwater > csteam

d)

cwater < cice and cwater < csteam

42.

Select all line segments in which the temperature is changing.

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

43.

Which line segment represents the heat of fusion (ΔHfus)?

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

44.

Which line segment represents the heat of vaporization (ΔHvap)?

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

45.

Select all line segments in which the kinetic energy is changing.

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

46.

Select all line segments in which the potential energy is changing.

a)

AB‾\overline{AB}  

b)

BC‾\overline{BC}  

c)

CD‾\overline{CD}  

d)

DE‾\overline{DE}  

e)

EF‾\overline{EF}  

47.

What is the melting point of this substance?

a)

100 oC

b)

60 oC

c)

-60 oC

d)

20 oC

48.

The freezing point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

49.

The graph shows the heating curves for benzene and water.

Which substance has a higher heat of vaporization?

a)

benzene

b)

water

50.

The graph shows the heating curves for benzene and water.

Which substance has a higher heat of fusion?

a)

benzene

b)

water

51.

The graph shows the heating curves for benzene and water.

Which substance has a higher specific heat capacity as a liquid?

a)

benzene

b)

water

52.

The graph shows the heating curves for benzene and water.

Which substance has a higher boiling point?

a)

benzene

b)

water

53.

The graph shows the heating curves for benzene and water.

Which substance has a higher melting point?

a)

benzene

b)

water

54.

From point A to point E, the sample is going through an

a)

exothermic process by releasing heat to the surroundings

b)

exothermic process by absorbing heat from the surroundings

c)

endothermic process by releasing heat to the surroundings

d)

endothermic process by absorbing heat from the surroundings

55.
True or false: melting and freezing occur at the same temperature.
a)
True
b)
False
56.

Thermal energy always moves:

a)

From a high temperature object to a lower temperature object.

b)

From a lower temperature object to a higher temperature object.

c)

From an object with lower kinetic energy to an object with higher kinetic energy.

d)

From an object of higher mass to an object of lower mass.

57.

What is true about intermolecular forces in gases

a)

they have been broken by heat

b)

They are very strong

c)

They cannot be put back together

d)

they represent a chemical change

58.

As matter cools what happens to the intermolecular forces?

a)

they strengthen

b)

they weaken

c)

they reverse

59.

What does heat do to intermolecular forces?

a)

strengthens them

b)

Weakens them

c)

reverses them

60.

What is holding molecules in a solid close to each other?

a)

Intermolecular forces

b)

Chemical Bonds

c)

Heat

d)

Cold

61.

In which region(s) of the graph would the substance be melting?

a)

No melting occurs on this graph

b)

Region C-E

c)

Region E-G

d)

Region G-I

e)

Region I-K

62.

What is the freezing point of the substance?

a)

0oC

b)

60oC

c)

120oC

d)

180oC

63.

From point A to point F, the sample is going through an __________ process by __________.

a)

exothermic, releasing heat to the surroundings

b)

exothermic, absorbing heat from the surroundings

c)

endothermic, releasing heat to the surroundings

d)

endothermic, absorbing heat from the surroundings

64.
Question Image

Label the graph with the correct scientific processes.

a)

A

1.

Gas

b)

B

2.

Condensation

c)

C

3.

Liquid

d)

D

4.

Freezing

e)

E

5.

Solid

65.

What type of curve is this?

a)

Heating

b)

Cooling

66.

Specific heat is the amount of ​ (a)   needed to increase the temperature of one ​ (b)   of any material one degree Celcius.

Choose from the below words
energy
gram
bonds
liter

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