General Organic And Biological Chemistry Structures of Life, 5th Edition By Timberlake – Test Bank
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Sample Test
General, Organic & Biological Chemistry, 5e (Timberlake)
Chapter 3 Energy and Matter
3.1 Multiple-Choice Questions
1) Helium is a(n)
1. A)
compound.
2. B)
heterogeneous mixture.
3. C)
element.
4. D)
homogeneous mixture.
5. E)
electron.
Answer: C
Objective: 3.1
Global Outcomes: GO2
2) Air is a(n)
1. A)
compound.
2. B)
heterogeneous mixture.
3. C) element.
4. D)
homogeneous mixture.
5. E)
None of the above.
Answer: D
Objective: 3.1
Global Outcomes: GO7
3) Coins in a piggy bank is a(n)
1. A)
compound.
2. B)
heterogeneous mixture.
3. C)
element.
4. D)
homogeneous mixture.
5. E)
None of the above.
Answer: B
Objective: 3.1
Global Outcomes: GO2
4) Gold in a wedding ring is a(n)
1. A)
compound.
2. B)
heterogeneous mixture.
3. C)
element.
4. D)
homogeneous mixture.
5. E)
None of the above.
Answer: C
Objective: 3.1
Global Outcomes: GO2
5) The primary substances of which all other things are composed
are
1. A)
molecules.
2. B)
compounds.
3. C)
elements.
4. D)
electrons.
5. E)
protons.
Answer: C
Objective: 3.1
Global Outcomes: GO2
6) Which of the following is a property of a solid?
1. A) It
takes the shape of the container.
2. B) It
fills the volume of the container.
3. C)
The particles move at a rapid rate.
4. D)
The interactions between its particles are very weak.
5. E)
The particles have fixed positions and are very close together.
Answer: E
Objective: 3.2
Global Outcomes: GO2
7) Which of the following is a physical property of both liquids
and gases?
1. A)
has its own shape
2. B)
has a definite volume
3. C)
has strong interactions between its particles
4. D)
has randomly arranged particles
5. E)
has large spaces between molecules
Answer: D
Objective: 3.2
Global Outcomes: GO2
8) Which one of the following properties describes a liquid?
1. A)
has its own shape
2. B)
particles are close together and move randomly
3. C)
particles move very rapidly
4. D)
fills the entire volume of the container
5. E)
There is essentially no interaction between the particles.
Answer: B
Objective: 3.2
Global Outcomes: GO2
9) In a gas, the distance between the particles is
1. A)
very close relative to the size of the molecules.
2. B)
close relative to the size of the molecules.
3. C)
fixed relative to the size of the molecules.
4. D)
small relative to the size of the molecules.
5. E)
very large relative to the size of the molecules.
Answer: E
Objective: 3.2
Global Outcomes: GO2
10) Which of the following is an example of a physical change?
1. A)
grinding coffee beans
2. B)
baking a cake
3. C)
converting water to hydrogen and oxygen
4. D)
digesting a cheeseburger
5. E)
burning coal
Answer: A
Objective: 3.2
Global Outcomes: GO2
11) Which of the following would NOT be a physical change?
1. A)
freezing water to make ice cubes
2. B)
tearing a piece of aluminum foil
3. C)
boiling water for soup
4. D)
burning gasoline in a lawnmower
5. E)
melting gold to make jewelry
Answer: D
Objective: 3.2
Global Outcomes: GO2
12) Which of the following is a chemical change?
1. A)
cutting a rope
2. B)
bending a steel rod
3. C)
making a snowman
4. D)
burning sugar
5. E)
melting gold
Answer: D
Objective: 3.2
Global Outcomes: GO2
13) Which of the following is a physical change?
1. A)
baking a cake
2. B)
dry ice subliming
3. C) fermenting
grapes to produce wine
4. D)
digesting a meal
5. E) a
tomato ripening
Answer: B
Objective: 3.2
Global Outcomes: GO2
14) A temperature of 41 °F is the same as
1. A) 5
°C.
2. B)
310 °C.
3. C) -9
°C.
4. D) 16
°C.
5. E) 42
°C.
Answer: A
Objective: 3.3
Global Outcomes: GO4
15) If the temperature is 20 °C, what is the corresponding
temperature on the Fahrenheit scale?
1. A)
-22 °F
2. B) 68
°F
3. C) 43
°F
4. D)
239 °F
5. E) 94
°F
Answer: B
Objective: 3.3
Global Outcomes: GO4
16) If the temperature is – 55 °C, what is the corresponding
temperature on the Kelvin scale?
1. A)
225 K
2. B)
218 K
3. C) 55
K
4. D)
273 K
5. E)
328 K
Answer: B
Objective: 3.3
Global Outcomes: GO4
17) A patient has a temperature of 38.5 °C. What is the
temperature in degrees Fahrenheit?
70. A)
70.5 °F
71. B)
311 °F
72. C)
126.9 °F
73. D)
101.3 °F
74. E)
11.7 °F
Answer: D
Objective: 3.3
Global Outcomes: GO4
18) The temperature of liquid nitrogen is – 196 °C. What is the
corresponding reading on the Kelvin scale?
1. A) 77
K
2. B)
-127 K
3. C)
-91 K
4. D) 48
K
5. E)
146 K
Answer: A
Objective: 3.3
Global Outcomes: GO4
19) On a hot day, the thermometer read 95 °F. What is the
temperature in degrees Celsius?
1. A) 77
°C
2. B)
113 °C
3. C) 35
°C
4. D) 63
°C
5. E)
178 °C
Answer: C
Objective: 3.3
Global Outcomes: GO4
20) Absolute zero is
1. A)
the freezing point of water using the Celsius scale.
2. B)
the boiling point of liquid nitrogen.
3. C)
the temperature on the Kelvin scale corresponding to 32 °F.
4. D)
the coldest temperature possible.
5. E)
the freezing point of liquid nitrogen.
Answer: D
Objective: 3.3
Global Outcomes: GO7
21) 650. J is the same amount of energy as
1. A)
155 cal.
2. B)
2720 cal.
3. C)
650 cal.
4. D)
1550 cal.
5. E)
2.72 cal.
Answer: A
Objective: 3.4
Global Outcomes: GO4
22) The energy associated with the motion of particles in a substance
is called
1. A)
temperature.
2. B)
electrical energy.
3. C)
heat.
4. D)
chemical energy.
5. E)
potential energy.
Answer: C
Objective: 3.4
Global Outcomes: GO7
23) An example of kinetic energy is
1. A) a
coiled spring.
2. B)
running water.
3. C) a
tree.
4. D) natural
gas.
5. E)
chemical energy.
Answer: B
Objective: 3.4
Global Outcomes: GO7
24) Which of the following is an example of potential energy?
1. A)
chewing food
2. B)
water stored in a reservoir
3. C)
burning wood
4. D) a
fan blade turning
5. E)
riding an exercise bike
Answer: B
Objective: 3.4
Global Outcomes: GO2
25) The phrase “ability to do work” is a definition of
1. A)
specific heat.
2. B)
energy.
3. C)
calorie.
4. D)
heating.
5. E)
cooling.
Answer: B
Objective: 3.4
Global Outcomes: GO7
26) The energy stored in the chemical bonds of a carbohydrate
molecule is
1. A)
specific heat.
2. B)
kinetic energy.
3. C)
potential energy.
4. D)
work.
5. E) a
calorie.
Answer: C
Objective: 3.4
Global Outcomes: GO2
27) The energy of motion is referred to as
1. A)
work.
2. B)
freezing.
3. C) specific
heat.
4. D)
potential energy.
5. E)
kinetic energy.
Answer: E
Objective: 3.4
Global Outcomes: GO2
28) In which of the following would the particles move most
rapidly?
1. A)
ice at -20 °C
2. B)
water at 20 °C
3. C)
steam at 110 °C
4. D)
boiling water
5. E)
ice at 0 °C
Answer: C
Objective: 3.4
Global Outcomes: GO2
29) 3.25 kcal is the same amount of energy as
3. A)
3.25 J.
4. B)
0.777 J.
5. C)
777 J.
6. D)
13600 J.
7. E)
13.6 J.
Answer: D
Objective: 3.4
Global Outcomes: GO4
30) Global warming is believed to result from all of the
following except
1. A)
burning of fossil fuels.
2. B)
increasing levels of carbon dioxide in the atmosphere.
3. C)
deforestation.
4. D)
movement of the Earth closer to the Sun.
5. E)
carbon dioxide trapping the heat produced by the Sun.
Answer: D
Objective: 3.4
Global Outcomes: GO9
31) A 2.5 g sample of french fries is placed in a calorimeter
with 500.0 g of water at an initial temperature of 21 °C. After combustion of
the french fries, the water has a temperature of 48 °C. What is the caloric
value (kcal/g) of the french fries?
1. A) 14
kcal/g
2. B) 11
kcal/g
3. C)
0.14 kcal/g
4. D)
4.2 kcal/g
5. E)
5.4 kcal/g
Answer: E
Objective: 3.5
Global Outcomes: GO4
32) A potato contains 20 g of carbohydrate. If carbohydrate has
a caloric value of 4 kcal/g, how many kcal are obtained from the carbohydrate
in the potato?
1. A) 5
kcal
2. B) 20
kcal
3. C) 40
kcal
4. D) 60
kcal
5. E) 80
kcal
Answer: E
Objective: 3.5
Global Outcomes: GO4
33) The dietary calorie (Cal) is equal to
1. A)
1000 kilocalories.
2. B)
1000 calories.
3. C)
100 calories.
4. D) 10
calories.
5. E) 1
calorie.
Answer: B
Objective: 3.5
Global Outcomes: GO7
34) A cheeseburger from a fast food restaurant contains 19 g of
fat, 20. g of carbohydrate, and 28 g of protein. How many kcal of energy does
the cheeseburger contain? (The accepted caloric values for foods are 4.0 kcal/g
for carbohydrate, 9.0 kcal/g for fat, and 4.0 kcal/g for protein.) Report the
answer to 2 significant figures.
70. A)
70. kcal
71. B)
360 kcal
72. C) 17
kcal
73. D)
630 kcal
74. E)
280 kcal
Answer: B
Objective: 3.5
Global Outcomes: GO4
35) A serving of fish contains 50.g of protein and 4.0 g of fat.
If protein has a caloric value of 4.0 kcal/g and fat has 9.0 kcal/g, how many
kcal are in the serving? Report the answer to 2 significant figures.
1. A)
240 kcal
2. B) 54.0
kcal
3. C)
470 kcal
4. D)
220 kcal
5. E)
490 kcal
Answer: A
Objective: 3.5
Global Outcomes: GO4
36) A slice of pizza contains 29 g of carbohydrate, 13 g of
protein and an unknown amount of fat. If the pizza contains 280 kcal, how many
grams of fat are present? Report the answer to 2 significant figures.
10. A)
10. g
11. B) 12
g
12. C) 25
g
13. D) 55
g
14. E)
250 g
Answer: B
Objective: 3.5
Global Outcomes: GO4
37) A diet has a total caloric intake of 1400 kcal. If the
protein in the diet provides 35% of the kcal, the number of kcal of protein in
the diet is
1. A)
700 kcal.
2. B)
490 kcal.
3. C)
210 kcal.
4. D)
460 kcal.
5. E)
1200 kcal.
Answer: B
Objective: 3.5
Global Outcomes: GO4
38) One cup of kidney beans contains 15 g of protein, 1.0 g of
fat, and 42 g of carbohydrate. How many kilocalories, to two significant
figures, does this sample contain?
1. A) 60
kcal
2. B) 88
kcal
3. C)
230 kcal
4. D)
240 kcal
5. E)
520 kcal
Answer: D
Objective: 3.5
Global Outcomes: GO4
39) The specific heat of a substance is the amount of heat
needed to
1. A)
change 1 g of the substance from the solid to the liquid state.
2. B)
raise the temperature of 1 g of the substance by 1 °C.
3. C)
change 1 g of the substance from the liquid to the solid state.
4. D)
convert 1 g of a liquid to gas.
5. E) convert
1 g of a solid to a gas.
Answer: B
Objective: 3.6
Global Outcomes: GO2
40) A kilocalorie of heat is required to raise the temperature
of
1. A) 1
g of water from 14 °C to 15 °C.
2. B) 1
g of water by 10 °C.
3. C) 10
g of water by 10 °C.
4. D)
100 g of water by 10 °C.
5. E)
100 g of water by 100 °C.
Answer: D
Objective: 3.6
Global Outcomes: GO2
41) How many calories are required to raise the temperature of a
35.0 g sample of iron from 25 °C to 35 °C? Iron has a specific heat of 0.108
cal/g °C.
1. A) 38
cal
2. B)
1.1 cal
3. C)
3.8 cal
4. D) 93
cal
5. E)
130 cal
Answer: A
Objective: 3.6
Global Outcomes: GO4
42) How many calories are required to increase the temperature
of 13 g of alcohol from 11 °C to 23 °C? The specific heat of alcohol is 0.588
cal/g °C.
1. A) 83
cal
2. B)
0.63 cal
3. C) 92
cal
4. D)
0.54 cal
5. E)
170 cal
Answer: C
Objective: 3.6
Global Outcomes: GO4
43) How many calories are required to raise the temperature of a
150. g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308
cal/g °C.
4. A) 4.62
cal
5. B)
116 cal
6. C)
22500 cal
7. D)
693 cal
8. E)
130 cal
Answer: D
Objective: 3.6
Global Outcomes: GO4
44) Raising the temperature of 10.0 g of water from 10.0 °C to
20.0 °C requires 100.0 cal of energy, while raising the temperature of 10.0 g
of aluminum from 10.0 °C to 20.0 °C requires 22 cal. More calories are required
to heat the water because
10. A)
water is a liquid and aluminum is a solid at 10.0 °C.
11. B)
ten grams of water occupies a larger volume than 10.0 g of aluminum.
12. C)
water has a greater potential energy than aluminum.
13. D)
water has a larger specific heat than aluminum.
14. E)
10.0 °C is closer to the melting point of water than to the melting point of
aluminum.
Answer: D
Objective: 3.6
Global Outcomes: GO2
45) The number of calories needed to raise the temperature of 32
g of water from 12 °C to 54 °C is
1. A)
384 cal.
2. B)
1.3 cal.
3. C)
1300 cal.
4. D)
1700 cal.
5. E)
0.76 cal.
Answer: C
Objective: 3.6
Global Outcomes: GO4
46) The specific heat of copper is 0.0920 cal/g °C, and the
specific heat of silver is 0.0562 cal/g °C. If 100 cal of heat is added to one
g of each metal at 25 °C, what is the expected result?
1. A)
The copper will reach a higher temperature.
2. B)
The silver will reach a higher temperature.
3. C)
The two samples will reach the same temperature.
4. D)
The copper will reach a temperature lower than 25 °C.
5. E)
The silver will soften.
Answer: B
Objective: 3.6
Global Outcomes: GO2
47) A burn from steam at 100 °C is expected to be more severe
than a burn from boiling water at 100 °C because
1. A) the
steam is hotter than the boiling water.
2. B)
there is more steam than water.
3. C)
the steam will give off a large amount of heat as it condenses.
4. D)
you are more likely to come into contact with the steam than with the boiling
water.
5. E)
All of these answers are correct.
Answer: C
Objective: 3.7
Global Outcomes: GO2
48) The physical state(s) present when a substance is melting is
(are)
1. A)
solid.
2. B)
liquid.
3. C)
gas.
4. D)
solid + liquid.
5. E)
liquid + gas.
Answer: D
Objective: 3.7
Global Outcomes: GO2
49) The formation of a gas resulting from the escape of
high-energy particles from the surface of a liquid is known as
1. A)
evaporation.
2. B)
deposition.
3. C)
boiling.
4. D)
melting.
5. E)
sublimation.
Answer: A
Objective: 3.7
Global Outcomes: GO2
50) When a solid is converted directly to a gas, the change of
state is called
1. A)
freezing.
2. B)
melting.
3. C)
boiling.
4. D)
condensation.
5. E)
sublimation.
Answer: E
Objective: 3.7
Global Outcomes: GO7
51) Which of the following does NOT involve a change of state?
1. A) melting
ice
2. B)
freezing water
3. C)
vaporization of alcohol
4. D)
sublimation of dry ice
5. E)
pouring water into a vacuum-insulated bottle
Answer: E
Objective: 3.7
Global Outcomes: GO2
52) A heating curve illustrates
1. A)
what a substance looks like as it is heated.
2. B)
what happens to the particles of a substance as it is heated.
3. C)
what happens to the heat applied as the temperature is increased.
4. D)
the changes in the temperature and physical state of a substance as it is
heated.
5. E)
the chemical changes that occur as the substance is heated.
Answer: D
Objective: 3.7
Global Outcomes: GO9
53) Which of the following does NOT represent a step on the
heating curve of water?
1. A)
The temperature of steam cannot exceed 100 °C.
2. B)
The temperature of ice remains at 0 °C as it melts.
3. C)
The temperature of liquid water increases linearly as it is heated.
4. D)
The temperature of liquid water remains at 100 °C as it boils.
5. E)
Both liquid water and ice are present at 0 °C.
Answer: A
Objective: 3.7
Global Outcomes: GO9
3.2 Short Answer Questions
1) The simplest type of pure substance is an ________.
Answer: element
Objective: 3.1
Global Outcomes: GO2
2) A mixture which has uniform properties is a ________ mixture.
Answer: homogeneous
Objective: 3.1
Global Outcomes: GO2
3) A color of a substance is an example of a ________ property.
Answer: physical
Objective: 3.2
Global Outcomes: GO2
4) A reaction of a substance with water is an example of a
________ property.
Answer: chemical
Objective: 3.2
Global Outcomes: GO2
5) The lowest temperature on the Kelvin scale is ________
kelvin.
Answer: 0 (zero)
Objective: 3.3
Global Outcomes: GO2
6) The boiling point of water on the Celsius scale is ________
°C.
Answer: 100
Objective: 3.3
Global Outcomes: GO2
7) The energy of motion is called ________ energy.
Answer: kinetic
Objective: 3.3
Global Outcomes: GO2
8) The nutritional calorie (Cal) is the same as ________ cal.
Answer: 1000
Objective: 3.5
Global Outcomes: GO7
9) Will the caloric value of a 100. g hamburger be higher or
lower than the caloric value of 100. g of sugar?
Answer: higher (2.6)
Objective: 3.5
Global Outcomes: GO2
10) Will the caloric value of a 100.g hamburger be higher or
lower than the caloric value of 100. g of cooking oil?
Answer: lower
Objective: 3.5
Global Outcomes: GO2
11) The units of specific heat are ________.
Answer: cal/g °C or J/g °C
Objective: 3.6
Global Outcomes: GO2
12) The change of state from solid to gas is termed ________.
Answer: sublimation
Objective: 3.7
Global Outcomes: GO2
13) When a liquid boils, the process by which the molecules
leave its surface is called ________.
Answer: evaporation
Objective: 3.7
Global Outcomes: GO2
Bromine ) has a freezing point of -7 °C, and a boiling point of
60 °C.
Indicate the state or change of state occurring at each
temperature.
14) 30 °C
Answer: liquid
Objective: 3.7
Global Outcomes: GO3
15) 60 °C
Answer: boiling or condensing
Objective: 3.7
Global Outcomes: GO3
16) -7 °C
Answer: melting or freezing
Objective: 3.7
Global Outcomes: GO3
17) -15 °C
Answer: solid
Objective: 3.7
Global Outcomes: GO3
18) 70 °C
Answer: gas
Objective: 3.7
Global Outcomes: GO3
3.3 True/False Questions
1) Gold is an element.
Answer: TRUE
Objective: 3.1
Global Outcomes: GO2
2) Black coffee is a homogeneous mixture.
Answer: TRUE
Objective: 3.1
Global Outcomes: GO2
3) A solid has a constant shape and volume.
Answer: TRUE
Objective: 3.2
Global Outcomes: GO2
4) Molecules of a gas are very close together.
Answer: FALSE
Objective: 3.2
Global Outcomes: GO2
5) Water vapor is a gas.
Answer: TRUE
Objective: 3.2
Global Outcomes: GO2
6) Water freezes at 100 °C.
Answer: FALSE
Objective: 3.3
Global Outcomes: GO2
7) 32 °F is the same temperature as 100 °C.
Answer: FALSE
Objective: 3.3
Global Outcomes: GO2
8) The energy in chemical bonds is kinetic energy.
Answer: FALSE
Objective: 3.4
Global Outcomes: GO2
9) Carbohydrates and proteins have the same caloric value per
gram.
Answer: TRUE
Objective: 3.5
Global Outcomes: GO2
10) The units of specific heat are cal g/°F.
Answer: FALSE
Objective: 3.6
Global Outcomes: GO2
11) Condensation occurs when a liquid is converted to a solid.
Answer: FALSE
Objective: 3.7
Global Outcomes: GO2
12) As heat is removed from a solid, its temperature decreases.
Answer: TRUE
Objective: 3.7
Global Outcomes: GO2
13) When a liquid is boiling, its temperature does not change.
Answer: TRUE
Objective: 3.7
Global Outcomes: GO2
14) Condensation occurs when a liquid is converted to a solid.
Answer: FALSE
Objective: 3.7
Global Outcomes: GO2
15) As a solid melts, its temperature does not change.
Answer: TRUE
Objective: 3.7
Global Outcomes: GO2
16) The temperature at which water melts and freezes is the
same.
Answer: TRUE
Objective: 3.7
Global Outcomes: GO2
3.4 Matching Questions
Identify the physical state(s) corresponding to the regions on
the cooling curve below.
1. A) liquid
and gas
2. B)
liquid and solid
3. C)
solid and gas
4. D)
gas
5. E)
solid
6. F)
liquid
1) A
Objective: 3.7
Global Outcomes: GO3
2) B
Objective: 3.7
Global Outcomes: GO3
3) C
Objective: 3.7
Global Outcomes: GO3
4) D
Objective: 3.7
Global Outcomes: GO3
5) E
Objective: 3.7
Global Outcomes: GO3
Answers: 1) D 2) A 3) F 4) B 5) E
Match the state of matter with each of the following
descriptions of a substance.
1. A)
liquid
2. B)
solid
3. C)
liquid + gas
4. D)
gas
5. E)
solid + liquid
6) Particles are held close together in a random pattern.
Objective: 3.2
Global Outcomes: GO2
7) Great distances exist between the particles.
Objective: 3.2
Global Outcomes: GO2
8) This substance is boiling.
Objective: 3.7
Global Outcomes: GO2
9) This material has a definite volume, and a definite shape.
Objective: 3.2
Global Outcomes: GO2
10) This substance is melting.
Objective: 3.7
Global Outcomes: GO2
Answers: 6) A 7) D 8) C 9) B 10) E
Identify each of the following transformations as a chemical or
physical change
1. A)
physical
2. B)
chemical
11) water evaporating
Objective: 3.2
Global Outcomes: GO2
12) a button falling off of a shirt
Objective: 3.2
Global Outcomes: GO2
13) silver tarnishing
Objective: 3.2
Global Outcomes: GO2
14) cutting the grass
Objective: 3.2
Global Outcomes: GO2
15) a nail rusting
Objective: 3.2
Global Outcomes: GO2
16) baking a cake
Objective: 3.2
Global Outcomes: GO2
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