Question 1

What determines the direction of heat flow?

Accepted Answer

A)  Heat always flows from a lower-temperature substance into a higher-temperature substance. 
B)  Heat always flows from a higher-temperature substance into a lower-temperature substance. 
C)  Heat flow direction depends upon the density of the substances involved. 
D)  The direction of heat flow is not predictable in any given process. 
A)  Heat always flows from a lower-temperature substance into a higher-temperature substance. 
B)  Heat always flows from a higher-temperature substance into a lower-temperature substance. 
C)  Heat flow direction depends upon the density of the substances involved. 
D)  The direction of heat flow is not predictable in any given process.

Question 2

Which of the following is generally true regarding the relationships of the density of an object and its massiveness?

Accepted Answer

A)  A denser object is not necessarily always more massive. 
B)  There is no scientific relationship between density and massiveness. 
C)  The relationship between density and massiveness depends on the physical state of the object only. 
D)  None of the above is true. 
A)  A denser object is not necessarily always more massive. 
B)  There is no scientific relationship between density and massiveness. 
C)  The relationship between density and massiveness depends on the physical state of the object only. 
D)  None of the above is true.

Question 3

If you drop a hot rock into a pail of water, the temperature of the rock and the water change until the two are equal. The rock cools and the water warms. Does this hold true if the hot rock is dropped into the Atlantic Ocean?

Accepted Answer

A)  no, because the Atlantic Ocean is so much bigger than a pail of water 
B)  no, because the Atlantic Ocean also contains dissolved salts 
C)  yes, because heat will continue to flow until they have the same temperature 
D)  yes, because the Atlantic Ocean actually contains more energy than does the pail of water 
A)  no, because the Atlantic Ocean is so much bigger than a pail of water 
B)  no, because the Atlantic Ocean also contains dissolved salts 
C)  yes, because heat will continue to flow until they have the same temperature 
D)  yes, because the Atlantic Ocean actually contains more energy than does the pail of water

Question 4

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 5

Why do we use different units for mass and weight?

Accepted Answer

A)  They are two different quantities. 
B)  Mass is metric and weight is U.S Customary Standard. 
C)  Weight is metric and mass is U.S Customary Standard. 
D)  Weight is how heavy something is and mass is how much space it takes up. 
E)  Actually, mass and weight share the same units. 
A)  They are two different quantities. 
B)  Mass is metric and weight is U.S Customary Standard. 
C)  Weight is metric and mass is U.S Customary Standard. 
D)  Weight is how heavy something is and mass is how much space it takes up. 
E)  Actually, mass and weight share the same units.

Question 6

How many joules are there in a candy bar containing 230,000 calories?

Accepted Answer

A)  230,000 joules 
B)  55,000 joules 
C)  460,000 joules 
D)  960,000 joules 
A)  230,000 joules 
B)  55,000 joules 
C)  460,000 joules 
D)  960,000 joules

Question 7

What type of phase change does the following figure best describe?

Accepted Answer

A)  melting 
B)  condensation 
C)  evaporation 
D)  freezing 
E)  none of the above 
A)  melting 
B)  condensation 
C)  evaporation 
D)  freezing 
E)  none of the above

Question 8

What type of phase change does the following figure best describe?

Accepted Answer

A)  evaporation 
B)  condensation 
C)  melting 
D)  freezing 
E)  none of the above 
A)  evaporation 
B)  condensation 
C)  melting 
D)  freezing 
E)  none of the above

Question 9

What would be the effect on an enclosed volume of gas if we were to simultaneously double the pressure and double the Kelvin (Absolute) temperature of the enclosed gas?

Accepted Answer

A)  The gas volume would double. 
B)  The gas volume would be cut in half. 
C)  The gas volume would remain the same. 
D)  The gas density would double and the gas would liquify. 
E)  It's not possible to simultaneously double the pressure and temperature. 
A)  The gas volume would double. 
B)  The gas volume would be cut in half. 
C)  The gas volume would remain the same. 
D)  The gas density would double and the gas would liquify. 
E)  It's not possible to simultaneously double the pressure and temperature.

Question 10

Which of the following best describes temperature?

Accepted Answer

A)  Temperature is the measure of the average amount of kinetic energy in a substance. 
B)  Temperature is the measure of the total amount of energy in a substance. 
C)  Temperature is the measure of the heat of an object. 
D)  all of the above 
E)  none of the above 
A)  Temperature is the measure of the average amount of kinetic energy in a substance. 
B)  Temperature is the measure of the total amount of energy in a substance. 
C)  Temperature is the measure of the heat of an object. 
D)  all of the above 
E)  none of the above

Question 11

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 12

Dmitri Mendeleev ________.

Accepted Answer

A)  predicted the existence of elements not yet discovered 
B)  developed the basis of our modern periodic table 
C)  helped in the discovery of missing elements by predicting their behavior 
D)  all of the above 
A)  predicted the existence of elements not yet discovered 
B)  developed the basis of our modern periodic table 
C)  helped in the discovery of missing elements by predicting their behavior 
D)  all of the above

Question 13

Which of the following would best describe heat?

Accepted Answer

A)  Heat is energy that moves from high to low temperature objects. 
B)  Heat is a measure of the temperature of an object. 
C)  Heat can be measured with a thermometer. 
D)  Objects at the same temperature have the same amount of heat. 
E)  Heat is a measure of the average amount of energy in an object. 
A)  Heat is energy that moves from high to low temperature objects. 
B)  Heat is a measure of the temperature of an object. 
C)  Heat can be measured with a thermometer. 
D)  Objects at the same temperature have the same amount of heat. 
E)  Heat is a measure of the average amount of energy in an object.

Question 14

Based on experimental evidence, John Dalton postulated that ________.

Accepted Answer

A)  each element consists of indivisible, minute particles called atoms 
B)  atoms can be created and destroyed in chemical reactions 
C)  not all atoms of a given element are identical 
D)  atoms of different elements have the same masses 
A)  each element consists of indivisible, minute particles called atoms 
B)  atoms can be created and destroyed in chemical reactions 
C)  not all atoms of a given element are identical 
D)  atoms of different elements have the same masses

Question 15

How does Aristotle's model of matter explain how a puddle of water disappears to dryness on a sunny day?

Accepted Answer

A)  Aristotle's model explains that water becomes dry when it comes into contact with Earth. 
B)  Aristotle's model explains that moisture combines with heat to form air. 
C)  Aristotle's model explains that the sun directs Earth to absorb the puddle of water. 
D)  Aristotle's model has no explanation of how a puddle of water disappears to dryness on a sunny day. 
A)  Aristotle's model explains that water becomes dry when it comes into contact with Earth. 
B)  Aristotle's model explains that moisture combines with heat to form air. 
C)  Aristotle's model explains that the sun directs Earth to absorb the puddle of water. 
D)  Aristotle's model has no explanation of how a puddle of water disappears to dryness on a sunny day.

Question 16

A supersonic airplane heats up considerably when traveling through the air at speeds greater than the speed of sound. As a result, the airplane during supersonic flight is longer than when it is at rest on the ground. Offer an explanation for this length change from a submicroscopic perspective.

Accepted Answer

A)  The engines on the supersonic plane are so powerful that they cause the plane's metal skin to stretch during accelerations. 
B)  Materials expand as they are heated. 
C)  Atmospheric air molecules hit the supersonic plane at great velocities causing the atoms of the planes metal skin to start moving faster. 
D)  Both A and B are correct. 
A)  The engines on the supersonic plane are so powerful that they cause the plane's metal skin to stretch during accelerations. 
B)  Materials expand as they are heated. 
C)  Atmospheric air molecules hit the supersonic plane at great velocities causing the atoms of the planes metal skin to start moving faster. 
D)  Both A and B are correct.

Question 17

According to Aristotle's hypothesis about matter, wet clay is converted to ceramic because ________.

Accepted Answer

A)  heat drives out the coolness of earth 
B)  dry air replaces moist air 
C)  fire replaces the moist element with the dry element 
D)  dry quality is replaced with moist quality 
A)  heat drives out the coolness of earth 
B)  dry air replaces moist air 
C)  fire replaces the moist element with the dry element 
D)  dry quality is replaced with moist quality

Question 18

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 19

Which of the following is an example of something with potential energy?

Accepted Answer

A)  a boulder at the top of a cliff 
B)  an arrow poised in a stretched bow 
C)  chemical bonds 
D)  gasoline in the gas tank of your car 
E)  all of the above 
A)  a boulder at the top of a cliff 
B)  an arrow poised in a stretched bow 
C)  chemical bonds 
D)  gasoline in the gas tank of your car 
E)  all of the above

Question 20

What is the mass in kilograms of a human weighing 130-pounds on the moon?

Accepted Answer

A)  about 350 kg 
B)  about 48 kg 
C)  about 22 kg 
D)  about 130 kg 
A)  about 350 kg 
B)  about 48 kg 
C)  about 22 kg 
D)  about 130 kg

What determines the direction of heat flow?

Which of the following is generally true regarding the relationships of the density of an object and its massiveness?

If you drop a hot rock into a pail of water, the temperature of the rock and the water change until the two are equal. The rock cools and the water warms. Does this hold true if the hot rock is dropped into the Atlantic Ocean?

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

Why do we use different units for mass and weight?

How many joules are there in a candy bar containing 230,000 calories?

What type of phase change does the following figure best describe?

What type of phase change does the following figure best describe?

What would be the effect on an enclosed volume of gas if we were to simultaneously double the pressure and double the Kelvin (Absolute) temperature of the enclosed gas?

Which of the following best describes temperature?

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

Dmitri Mendeleev ________.

Which of the following would best describe heat?

Based on experimental evidence, John Dalton postulated that ________.

How does Aristotle's model of matter explain how a puddle of water disappears to dryness on a sunny day?

A supersonic airplane heats up considerably when traveling through the air at speeds greater than the speed of sound. As a result, the airplane during supersonic flight is longer than when it is at rest on the ground. Offer an explanation for this length change from a submicroscopic perspective.

According to Aristotle's hypothesis about matter, wet clay is converted to ceramic because ________.

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?

Which of the following is an example of something with potential energy?

What is the mass in kilograms of a human weighing 130-pounds on the moon?

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

What determines the direction of heat flow?

Which of the following is generally true regarding the relationships of the density of an object and its massiveness?

If you drop a hot rock into a pail of water, the temperature of the rock and the water change until the two are equal. The rock cools and the water warms. Does this hold true if the hot rock is dropped into the Atlantic Ocean?

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

Why do we use different units for mass and weight?

How many joules are there in a candy bar containing 230,000 calories?

What type of phase change does the following figure best describe?

What type of phase change does the following figure best describe?

What would be the effect on an enclosed volume of gas if we were to simultaneously double the pressure and double the Kelvin (Absolute) temperature of the enclosed gas?

Which of the following best describes temperature?

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

Dmitri Mendeleev ________.

Which of the following would best describe heat?

Based on experimental evidence, John Dalton postulated that ________.

How does Aristotle's model of matter explain how a puddle of water disappears to dryness on a sunny day?

A supersonic airplane heats up considerably when traveling through the air at speeds greater than the speed of sound. As a result, the airplane during supersonic flight is longer than when it is at rest on the ground. Offer an explanation for this length change from a submicroscopic perspective.

According to Aristotle's hypothesis about matter, wet clay is converted to ceramic because ________.

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?

Which of the following is an example of something with potential energy?

What is the mass in kilograms of a human weighing 130-pounds on the moon?

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