Question 1

The density of air at 25°C and 1 atmosphere of pressure is about   . What happens to the density of air as the temperature is increased? When the pressure is increased?

Accepted Answer

A) temperature increase causes density to decrease; pressure increase causes density to increase 
B) temperature increase causes density to decrease; pressure increase causes density to decrease 
C) temperature increase causes density to increase; pressure increase causes density to increase 
D) temperature increase causes density to increase; pressure increase causes density to decrease 
A) temperature increase causes density to decrease; pressure increase causes density to increase 
B) temperature increase causes density to decrease; pressure increase causes density to decrease 
C) temperature increase causes density to increase; pressure increase causes density to increase 
D) temperature increase causes density to increase; pressure increase causes density to decrease

Question 2

Alcohol wiped across a table top rapidly disappears. Which of the following is true?

Accepted Answer

A) As the alcohol evaporates it soaks up energy from the table top which is thus cooled. 
B) The alcohol is absorbed by the table top in a reaction that releases heat. 
C) The alcohol and table top undergo a chemical reaction producing a fragrant vapor. 
D) Alcohol is an organic substance composed of continuous matter without empty space and is immediately annihilated when it comes into contact with the table top. 
A) As the alcohol evaporates it soaks up energy from the table top which is thus cooled. 
B) The alcohol is absorbed by the table top in a reaction that releases heat. 
C) The alcohol and table top undergo a chemical reaction producing a fragrant vapor. 
D) Alcohol is an organic substance composed of continuous matter without empty space and is immediately annihilated when it comes into contact with the table top.

Question 3

The value 300 joules could be a measure of ________.

Accepted Answer

A) the energy content of an object 
B) the amount of heat transferred from one object to another 
C) the temperature of an object 
D) A and B 
E) all of the above 
A) the energy content of an object 
B) the amount of heat transferred from one object to another 
C) the temperature of an object 
D) A and B 
E) all of the above

Question 4

Which of the following units of measurement could be used to describe density?

Accepted Answer

A) kilograms per liter 
B) miles per hour 
C) grams per kilogram 
D) feet per gram 
E) milliliters per gram 
A) kilograms per liter 
B) miles per hour 
C) grams per kilogram 
D) feet per gram 
E) milliliters per gram

Question 5

Which of the following is the least amount of energy?

Accepted Answer

A) 1.0 joules 
B) 1.0 kilojoule 
C) 1.0 Calorie 
D) 1.0 kilocalorie 
E) 1.0 calorie 
A) 1.0 joules 
B) 1.0 kilojoule 
C) 1.0 Calorie 
D) 1.0 kilocalorie 
E) 1.0 calorie

Question 6

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 7

How would you describe the volume of the following object? the amount of water in a swimming pool

Accepted Answer

A) microscopic 
B) macroscopic 
C) submicroscopic 
D) all of the above 
E) none of the above 
A) microscopic 
B) macroscopic 
C) submicroscopic 
D) all of the above 
E) none of the above

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 best describes a gas?

Accepted Answer

A) The molecules are moving quickly and are widely spaced. 
B) The molecules are moving slowly and closely spaced. 
C) The material has a fixed volume and a fixed shape. 
D) The material has a fixed volume but has no definite shape. 
E) The molecules are closely spaced but in random fashion. 
A) The molecules are moving quickly and are widely spaced. 
B) The molecules are moving slowly and closely spaced. 
C) The material has a fixed volume and a fixed shape. 
D) The material has a fixed volume but has no definite shape. 
E) The molecules are closely spaced but in random fashion.

Question 10

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 11

How many milliliters of air are there in a hole measuring 5 L?

Accepted Answer

A) 5000 mL 
B) 200 mL 
C) 5 mL 
D) There are no milliliters of air in this hole. 
A) 5000 mL 
B) 200 mL 
C) 5 mL 
D) There are no milliliters of air in this hole.

Question 12

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 13

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 14

How many calories are there in a candy bar containing 230 Calories?

Accepted Answer

A) 230 calories 
B) 2300 calories 
C) 23,000 calories 
D) 230,000 calories 
A) 230 calories 
B) 2300 calories 
C) 23,000 calories 
D) 230,000 calories

Question 15

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 16

When a liquid evaporates, the vapor expands because ________.

Accepted Answer

A) the gas particles have less kinetic energy than the liquid particles 
B) the gas particles have less potential energy than the liquid particles 
C) the gas particles have more potential energy than the liquid particles 
D) the gas particles have more kinetic energy than the liquid particles 
E) the gas particles are bigger than the liquid particles 
A) the gas particles have less kinetic energy than the liquid particles 
B) the gas particles have less potential energy than the liquid particles 
C) the gas particles have more potential energy than the liquid particles 
D) the gas particles have more kinetic energy than the liquid particles 
E) the gas particles are bigger than the liquid particles

Question 17

Which of the following is not a volume measurement?

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 18

In which are the molecules moving faster: a swimming pool of boiling water or a cup of boiling water?

Accepted Answer

A) The swimming pool of boiling water because it contains more energy. 
B) The cup because the molecules rebound off the container's inner surface more frequently. 
C) The average motion of the molecules in each is the same. 
D) There is insufficient information given to determine where the molecules move faster. 
A) The swimming pool of boiling water because it contains more energy. 
B) The cup because the molecules rebound off the container's inner surface more frequently. 
C) The average motion of the molecules in each is the same. 
D) There is insufficient information given to determine where the molecules move faster.

Question 19

When you suck through a soda straw into a drink as shown in the illustration below, what causes the drink to rise into your mouth: the muscles of your lungs and cheeks or the weight of the atmosphere?

Accepted Answer

A) the muscles of your lungs 
B) the weight of the atmosphere 
C) Both factors are equally accountable for the soda's rising into your mouth. 
D) Actually, neither the muscles of your lungs nor the weight of the atmosphere is the reason for the soda's rising into your mouth. 
A) the muscles of your lungs 
B) the weight of the atmosphere 
C) Both factors are equally accountable for the soda's rising into your mouth. 
D) Actually, neither the muscles of your lungs nor the weight of the atmosphere is the reason for the soda's rising into your mouth.

Question 20

What state (or states)of matter does this diagram of submicroscopic particles represent?

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) solid-gas mixture 
E) liquid-gas mixture 
A) solid 
B) liquid 
C) gas 
D) solid-gas mixture 
E) liquid-gas mixture

The density of air at 25°C and 1 atmosphere of pressure is about . What happens to the density of air as the temperature is increased? When the pressure is increased?

Alcohol wiped across a table top rapidly disappears. Which of the following is true?

The value 300 joules could be a measure of ________.

Which of the following units of measurement could be used to describe density?

Which of the following is the least amount of energy?

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?

How would you describe the volume of the following object? the amount of water in a swimming pool

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 best describes a gas?

A biological cell is best described as ________.

How many milliliters of air are there in a hole measuring 5 L?

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?

Which of the following is the largest quantity of mass?

How many calories are there in a candy bar containing 230 Calories?

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

When a liquid evaporates, the vapor expands because ________.

Which of the following is not a volume measurement?

In which are the molecules moving faster: a swimming pool of boiling water or a cup of boiling water?

When you suck through a soda straw into a drink as shown in the illustration below, what causes the drink to rise into your mouth: the muscles of your lungs and cheeks or the weight of the atmosphere?

What state (or states)of matter does this diagram of submicroscopic particles represent?

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

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Exam 2: Particles of Matter

The density of air at 25°C and 1 atmosphere of pressure is about . What happens to the density of air as the temperature is increased? When the pressure is increased?

Alcohol wiped across a table top rapidly disappears. Which of the following is true?

The value 300 joules could be a measure of ________.

Which of the following units of measurement could be used to describe density?

Which of the following is the least amount of energy?

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?

How would you describe the volume of the following object? the amount of water in a swimming pool

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 best describes a gas?

A biological cell is best described as ________.

How many milliliters of air are there in a hole measuring 5 L?

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?

Which of the following is the largest quantity of mass?

How many calories are there in a candy bar containing 230 Calories?

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

When a liquid evaporates, the vapor expands because ________.

Which of the following is not a volume measurement?

In which are the molecules moving faster: a swimming pool of boiling water or a cup of boiling water?

When you suck through a soda straw into a drink as shown in the illustration below, what causes the drink to rise into your mouth: the muscles of your lungs and cheeks or the weight of the atmosphere?

What state (or states)of matter does this diagram of submicroscopic particles represent?

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