Question 1

Why do scuba divers exhale air when they ascend to the surface after a dive?

Accepted Answer

A)  The air bubbles which surround the diver as he/she exhales assists overall buoyancy making it easier for the diver to ascend. 
B)  Exhaling of air decreases the volume of air in the lungs, thus making it easier for the lungs to adjust to the decrease in external pressure on the diver as the diver ascends. 
C)  If the air in the lungs were not exhaled, the volume of air inside the lungs would expand as the diver ascended and could severely damage the lungs. 
D)  Both B and C are true. 
E)  None of the above are true. 
A)  The air bubbles which surround the diver as he/she exhales assists overall buoyancy making it easier for the diver to ascend. 
B)  Exhaling of air decreases the volume of air in the lungs, thus making it easier for the lungs to adjust to the decrease in external pressure on the diver as the diver ascends. 
C)  If the air in the lungs were not exhaled, the volume of air inside the lungs would expand as the diver ascended and could severely damage the lungs. 
D)  Both B and C are true. 
E)  None of the above are true.

Question 2

Which of the following is not a measurement of volume?

Accepted Answer

A)  0.156 liter 
B)  22.02 milliliters 
C)  10.0 cubic centimeters 
D)  842 cubic meters 
E)  5.5 milligrams 
A)  0.156 liter 
B)  22.02 milliliters 
C)  10.0 cubic centimeters 
D)  842 cubic meters 
E)  5.5 milligrams

Question 3

Does a 2 kg solid iron brick have twice as much mass as a 1 kg solid block of wood? Twice as much volume?

Accepted Answer

A)  The iron brick has twice the mass as well as twice the volume. 
B)  The iron brick has twice the mass, but only half the volume. 
C)  The iron brick has twice the mass, but its volume compared to the block of wood depends on the density of the wood. 
D)  The iron brick has twice the mass, but its volume compared to the block of wood depends on the weight of the wood. 
A)  The iron brick has twice the mass as well as twice the volume. 
B)  The iron brick has twice the mass, but only half the volume. 
C)  The iron brick has twice the mass, but its volume compared to the block of wood depends on the density of the wood. 
D)  The iron brick has twice the mass, but its volume compared to the block of wood depends on the weight of the wood.

Question 4

Can an object have mass without having weight? Can it have weight without having mass?

Accepted Answer

A)  yes and yes 
B)  yes and no 
C)  no and yes 
D)  no and no 
A)  yes and yes 
B)  yes and no 
C)  no and yes 
D)  no and no

Question 5

Which of the following is something that is best described as having potential energy?

Accepted Answer

A)  food 
B)  wind 
C)  running water 
D)  a meteorite traveling through the atmosphere 
E)  none of the above 
A)  food 
B)  wind 
C)  running water 
D)  a meteorite traveling through the atmosphere 
E)  none of the above

Question 6

Dalton's atomic model gained credibility because ________.

Accepted Answer

A)  atoms are too small to be seen, so no one could prove him wrong 
B)  the model worked to explain much about known chemical reactions 
C)  people could make gold from common metals 
D)  he was elected into the Royal Society 
A)  atoms are too small to be seen, so no one could prove him wrong 
B)  the model worked to explain much about known chemical reactions 
C)  people could make gold from common metals 
D)  he was elected into the Royal Society

Question 7

Which of the following best describes a liquid?

Accepted Answer

A)  a constant volume but its shape is not defined 
B)  a constant shape and a constant volume 
C)  does not have a definite shape or a definite volume 
D)  will always expand to fill the full volume of its container. 
E)  does not deform upon application of pressure 
A)  a constant volume but its shape is not defined 
B)  a constant shape and a constant volume 
C)  does not have a definite shape or a definite volume 
D)  will always expand to fill the full volume of its container. 
E)  does not deform upon application of pressure

Question 8

What volume of water would a 52.3-gram sample of pure gold displace? (Assume the density of pure gold equals 19.3 g/mL)

Accepted Answer

A)  36.9 mL 
B)  2.71 mL 
C)  52.3 mL 
D)  The density of water should be given in order to make this calculation possible. 
A)  36.9 mL 
B)  2.71 mL 
C)  52.3 mL 
D)  The density of water should be given in order to make this calculation possible.

Question 9

Which of the following is the largest quantity of mass?

Accepted Answer

A)  100 kg 
B)  100,000 g 
C)  100,000,000 mg 
D)  All of the masses are the same. 
A)  100 kg 
B)  100,000 g 
C)  100,000,000 mg 
D)  All of the masses are the same.

Question 10

If the density of mercury is 13.6 g/mL and the density of lead is 11.3 g/mL, which has the larger volume: 1 g of mercury or 1 g of lead?

Accepted Answer

A)  lead 
B)  mercury 
C)  Volume and mass are not related. 
D)  Both have the same volume. 
E)  none of the above 
A)  lead 
B)  mercury 
C)  Volume and mass are not related. 
D)  Both have the same volume. 
E)  none of the above

Question 11

Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at

Accepted Answer

A)  The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas. 
B)  The submicroscopic particles of the gas are moving faster. This means that they have more energy, which means that the attractions among them must be stronger. 
C)  The attractions among the submicroscopic particles of the solid are much stronger, so much stronger that they hold the particles of the solid absolutely still. 
D)  The temperatures of these two materials are the same, which means that the attractions among their submicroscopic particles are also of the same strength. 
A)  The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas. 
B)  The submicroscopic particles of the gas are moving faster. This means that they have more energy, which means that the attractions among them must be stronger. 
C)  The attractions among the submicroscopic particles of the solid are much stronger, so much stronger that they hold the particles of the solid absolutely still. 
D)  The temperatures of these two materials are the same, which means that the attractions among their submicroscopic particles are also of the same strength.

Question 12

Which temperature is the hottest?

Accepted Answer

A)  100°C 
B)  100 K 
C)  100°F 
D)  They are all equal. 
E)  none of the above 
A)  100°C 
B)  100 K 
C)  100°F 
D)  They are all equal. 
E)  none of the above

Question 13

Which of the following does not describe mass?

Accepted Answer

A)  how much space an object occupies 
B)  kilograms 
C)  how much matter is in a given object 
D)  the amount of inertia in a given object 
E)  grams 
A)  how much space an object occupies 
B)  kilograms 
C)  how much matter is in a given object 
D)  the amount of inertia in a given object 
E)  grams

Question 14

Why is it not possible for the scanning probe microscope (SPM) to make images of the inside of an atom?

Accepted Answer

A)  The most representative "image" of the inside of the atom would be a picture of empty space. 
B)  The SPM works by passing a current across a tiny gap between the tip of an ultrathin needle and the surface being studied. No gap, no image. 
C)  The SPM ultrathin needle itself is made of atoms and so is not tiny enough to pierce through an atom much like a sewing needle can pierce into a Ping-Pong ball. 
D)  All of the above are reasonable answers. 
A)  The most representative "image" of the inside of the atom would be a picture of empty space. 
B)  The SPM works by passing a current across a tiny gap between the tip of an ultrathin needle and the surface being studied. No gap, no image. 
C)  The SPM ultrathin needle itself is made of atoms and so is not tiny enough to pierce through an atom much like a sewing needle can pierce into a Ping-Pong ball. 
D)  All of the above are reasonable answers.

Question 15

The following three boxes represent the number of submicroscopic particles within a given volume of a particular substance at different temperatures. Which box represents the greatest density? Which box represents the greatest temperature?

Accepted Answer

A)  A and C 
B)  B and C 
C)  A and B 
D)  B and A 
A)  A and C 
B)  B and C 
C)  A and B 
D)  B and A

Question 16

The diagram on the far left shows the moving particles of a gaseous material within a rigid container. Which of the three boxes on the right best represents this material upon the addition of heat?

Accepted Answer

A)  box A because it shows the gas particles rising upon the addition of heat 
B)  box B because it shows the gas particles moving faster 
C)  box C because it shows how the particles expand upon the addition of heat 
D)  All three of these boxes show accurate representations of what happens to the particles within this rigid container upon the addition of heat. 
A)  box A because it shows the gas particles rising upon the addition of heat 
B)  box B because it shows the gas particles moving faster 
C)  box C because it shows how the particles expand upon the addition of heat 
D)  All three of these boxes show accurate representations of what happens to the particles within this rigid container upon the addition of heat.

Question 17

A biological cell is best described as ________.

Accepted Answer

A)  macroscopic 
B)  microscopic 
C)  submicroscopic 
D)  nanoscopic 
A)  macroscopic 
B)  microscopic 
C)  submicroscopic 
D)  nanoscopic

Question 18

What physical quantities discussed in this chapter change most when a junked car is neatly crushed into a compact cube?

Accepted Answer

A)  The car's weight and volume change, but not its mass. 
B)  The volume of the car changes as well as its average density. 
C)  The car's temperature changes, but not its average density. 
D)  The mass of the car changes as well as its volume. 
A)  The car's weight and volume change, but not its mass. 
B)  The volume of the car changes as well as its average density. 
C)  The car's temperature changes, but not its average density. 
D)  The mass of the car changes as well as its volume.

Question 19

Which of the following temperatures is not possible?

Accepted Answer

A)  25 K 
B)  -200 K 
C)  -200°C 
D)  0°C 
E)  0°F 
A)  25 K 
B)  -200 K 
C)  -200°C 
D)  0°C 
E)  0°F

Question 20

Which of the following has the largest density?

Accepted Answer

A)  a 10-g object with a volume of 1 mL 
B)  a 1-g object with a volume of 10 mL 
C)  a 200-g object with a volume of 200 mL 
D)  a 10-g object with a volume of 10 mL 
E)  All of the densities are the same. 
A)  a 10-g object with a volume of 1 mL 
B)  a 1-g object with a volume of 10 mL 
C)  a 200-g object with a volume of 200 mL 
D)  a 10-g object with a volume of 10 mL 
E)  All of the densities are the same.

Why do scuba divers exhale air when they ascend to the surface after a dive?

Which of the following is not a measurement of volume?

Does a 2 kg solid iron brick have twice as much mass as a 1 kg solid block of wood? Twice as much volume?

Can an object have mass without having weight? Can it have weight without having mass?

Which of the following is something that is best described as having potential energy?

Dalton's atomic model gained credibility because ________.

Which of the following best describes a liquid?

What volume of water would a 52.3-gram sample of pure gold displace? (Assume the density of pure gold equals 19.3 g/mL)

Which of the following is the largest quantity of mass?

If the density of mercury is 13.6 g/mL and the density of lead is 11.3 g/mL, which has the larger volume: 1 g of mercury or 1 g of lead?

Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at

Which temperature is the hottest?

Which of the following does not describe mass?

Why is it not possible for the scanning probe microscope (SPM) to make images of the inside of an atom?

The following three boxes represent the number of submicroscopic particles within a given volume of a particular substance at different temperatures. Which box represents the greatest density? Which box represents the greatest temperature?

The diagram on the far left shows the moving particles of a gaseous material within a rigid container. Which of the three boxes on the right best represents this material upon the addition of heat?

A biological cell is best described as ________.

What physical quantities discussed in this chapter change most when a junked car is neatly crushed into a compact cube?

Which of the following temperatures is not possible?

Which of the following has the largest density?

About Science

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters

Exam 2: Particles of Matter

Why do scuba divers exhale air when they ascend to the surface after a dive?

Which of the following is not a measurement of volume?

Does a 2 kg solid iron brick have twice as much mass as a 1 kg solid block of wood? Twice as much volume?

Can an object have mass without having weight? Can it have weight without having mass?

Which of the following is something that is best described as having potential energy?

Dalton's atomic model gained credibility because ________.

Which of the following best describes a liquid?

What volume of water would a 52.3-gram sample of pure gold displace? (Assume the density of pure gold equals 19.3 g/mL)

Which of the following is the largest quantity of mass?

If the density of mercury is 13.6 g/mL and the density of lead is 11.3 g/mL, which has the larger volume: 1 g of mercury or 1 g of lead?

Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at

Which temperature is the hottest?

Which of the following does not describe mass?

Why is it not possible for the scanning probe microscope (SPM) to make images of the inside of an atom?

The following three boxes represent the number of submicroscopic particles within a given volume of a particular substance at different temperatures. Which box represents the greatest density? Which box represents the greatest temperature?

The diagram on the far left shows the moving particles of a gaseous material within a rigid container. Which of the three boxes on the right best represents this material upon the addition of heat?

A biological cell is best described as ________.

What physical quantities discussed in this chapter change most when a junked car is neatly crushed into a compact cube?

Which of the following temperatures is not possible?

Which of the following has the largest density?

About Science

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters