Question 1

Climate change is believed to result from all of the following except ________.

Accepted Answer

A) burning of fossil fuels 
B) increasing levels of carbon dioxide in the atmosphere 
C) deforestation 
D) movement of the earth closer to the sun 
E) carbon dioxide trapping the heat produced by the sun 
A) burning of fossil fuels 
B) increasing levels of carbon dioxide in the atmosphere 
C) deforestation 
D) movement of the earth closer to the sun 
E) carbon dioxide trapping the heat produced by the sun

Question 2

13.2 kJ is the same amount of energy as ________.

Accepted Answer

A) 3.15 kcal 
B) 3.15 cal 
C) 55.2 kcal 
D) 55.2 cal 
E) 36.2 kcal 
A) 3.15 kcal 
B) 3.15 cal 
C) 55.2 kcal 
D) 55.2 cal 
E) 36.2 kcal

Question 3

Which of the following is a property of both liquids and gases?

Accepted Answer

A) has its own shape 
B) has a definite volume 
C) has strong interactions between its particles 
D) has randomly arranged particles 
E) has large spaces between molecules 
A) has its own shape 
B) has a definite volume 
C) has strong interactions between its particles 
D) has randomly arranged particles 
E) has large spaces between molecules

Question 4

The energy stored in molecules is ________.

Accepted Answer

A) specific heat 
B) kinetic energy 
C) potential energy 
D) work 
E) a calorie 
A) specific heat 
B) kinetic energy 
C) potential energy 
D) work 
E) a calorie

Question 5

The degree Celsius is a unit of energy.

Accepted Answer

A) True 
 B)False

Question 6

The dietary calorie(Cal)is equal to ________.

Accepted Answer

A) 1000 kcal 
B) 1000 cal 
C) 100 cal 
D) 10 cal 
E) 1 cal 
A) 1000 kcal 
B) 1000 cal 
C) 100 cal 
D) 10 cal 
E) 1 cal

Question 7

Which of the following is not an element?

Accepted Answer

A) tin 
B) water 
C) gold 
D) silver 
E) carbon 
A) tin 
B) water 
C) gold 
D) silver 
E) carbon

Question 8

The kilojoule is a larger unit of energy than the kilocalorie.

Accepted Answer

A) True 
 B)False

Question 9

When a liquid boils,the process by which the molecules leave its surface is called ________.

Accepted Answer

The answer of When a liquid boils,the process by which...

Question 10

Which of the following is an example of a physical change?

Accepted Answer

A) grinding coffee beans 
B) baking a cake 
C) converting water to hydrogen and oxygen 
D) digesting a cheeseburger 
E) burning coal 
A) grinding coffee beans 
B) baking a cake 
C) converting water to hydrogen and oxygen 
D) digesting a cheeseburger 
E) burning coal

Question 11

Gold in a ring is a(n)________.

Accepted Answer

A) compound 
B) heterogeneous mixture 
C) element 
D) homogeneous mixture 
E) none of the above 
A) compound 
B) heterogeneous mixture 
C) element 
D) homogeneous mixture 
E) none of the above

Question 12

The heat of fusion is the amount of heat necessary to change one gram of a substance from the solid to the ________ state at its melting point.

Accepted Answer

The answer of The heat of fusion is the amount...

Question 13

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 22.0 cal.More calories are required to heat the water because ________.

Accepted Answer

A) water is a liquid and aluminum is a solid at 10.0 °C 
B) ten grams of water occupies a larger volume than 10.0 g of aluminum 
C) water has a greater potential energy than aluminum 
D) water has a larger specific heat than aluminum 
E) 10.0 °C is closer to the melting point of water than to the melting point of aluminum 
A) water is a liquid and aluminum is a solid at 10.0 °C 
B) ten grams of water occupies a larger volume than 10.0 g of aluminum 
C) water has a greater potential energy than aluminum 
D) water has a larger specific heat than aluminum 
E) 10.0 °C is closer to the melting point of water than to the melting point of aluminum

Question 14

The heat of fusion of water is larger than the heat of vaporization.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following does not represent a step on the heating curve of water?

Accepted Answer

A) The temperature of steam cannot exceed 100 °C. 
B) The temperature of ice remains at 0 °C as it melts. 
C) The temperature of liquid water increases linearly as it is heated. 
D) The temperature of liquid water remains at 100 °C as it boils. 
E) Both liquid water and ice are present at 0 °C. 
A) The temperature of steam cannot exceed 100 °C. 
B) The temperature of ice remains at 0 °C as it melts. 
C) The temperature of liquid water increases linearly as it is heated. 
D) The temperature of liquid water remains at 100 °C as it boils. 
E) Both liquid water and ice are present at 0 °C.

Question 16

Which of the following is a physical change?

Accepted Answer

A) iron rusts 
B) ice melts 
C) sugar caramelizes 
D) food digests 
E) natural gas burns 
A) iron rusts 
B) ice melts 
C) sugar caramelizes 
D) food digests 
E) natural gas burns

Question 17

In a gas,the distance between the particles is ________.

Accepted Answer

A) very close relative to the size of the molecules 
B) close relative to the size of the molecules 
C) fixed relative to the size of the molecules 
D) small relative to the size of the molecules 
E) very large relative to the size of the molecules 
A) very close relative to the size of the molecules 
B) close relative to the size of the molecules 
C) fixed relative to the size of the molecules 
D) small relative to the size of the molecules 
E) very large relative to the size of the molecules

Question 18

Bromine ( BrS1U1B12S1U1B0 )
-70 °C

Accepted Answer

The answer of Bromine ( BrS1U1B12S1U1B0 )
-70 °C...

Question 19

A burn from steam at 100 °C is expected to be more severe than a burn from boiling water at 100 °C because ________.

Accepted Answer

A) the steam is hotter than the boiling water 
B) there is more steam than water 
C) the steam will give off a large amount of heat as it condenses 
D) you are more likely to come into contact with the steam than with the boiling water 
E) All of these answers are correct. 
A) the steam is hotter than the boiling water 
B) there is more steam than water 
C) the steam will give off a large amount of heat as it condenses 
D) you are more likely to come into contact with the steam than with the boiling water 
E) All of these answers are correct.

Question 20

The phrase "ability to do work" is a definition of ________.

Accepted Answer

A) specific heat 
B) energy 
C) calorie 
D) heating 
E) cooling 
A) specific heat 
B) energy 
C) calorie 
D) heating 
E) cooling

Climate change is believed to result from all of the following except ________.

13.2 kJ is the same amount of energy as ________.

Which of the following is a property of both liquids and gases?

The energy stored in molecules is ________.

The degree Celsius is a unit of energy.

The dietary calorie(Cal)is equal to ________.

Which of the following is not an element?

The kilojoule is a larger unit of energy than the kilocalorie.

When a liquid boils,the process by which the molecules leave its surface is called ________.

Which of the following is an example of a physical change?

Gold in a ring is a(n)________.

The heat of fusion is the amount of heat necessary to change one gram of a substance from the solid to the ________ state at its melting point.

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 22.0 cal.More calories are required to heat the water because ________.

The heat of fusion of water is larger than the heat of vaporization.

Which of the following does not represent a step on the heating curve of water?

Which of the following is a physical change?

In a gas,the distance between the particles is ________.

Bromine ( Br₂ ) -70 °C

A burn from steam at 100 °C is expected to be more severe than a burn from boiling water at 100 °C because ________.

The phrase "ability to do work" is a definition of ________.

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Introduction to Organic Chemistry: Hydrocarbons

Alcohols, thiols, ethers, aldehydes, and Ketones

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Exam 3: Matter and Energy

Climate change is believed to result from all of the following except ________.

13.2 kJ is the same amount of energy as ________.

Which of the following is a property of both liquids and gases?

The energy stored in molecules is ________.

The degree Celsius is a unit of energy.

The dietary calorie(Cal)is equal to ________.

Which of the following is not an element?

The kilojoule is a larger unit of energy than the kilocalorie.

When a liquid boils,the process by which the molecules leave its surface is called ________.

Which of the following is an example of a physical change?

Gold in a ring is a(n)________.

The heat of fusion is the amount of heat necessary to change one gram of a substance from the solid to the ________ state at its melting point.

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 22.0 cal.More calories are required to heat the water because ________.

The heat of fusion of water is larger than the heat of vaporization.

Which of the following does not represent a step on the heating curve of water?

Which of the following is a physical change?

In a gas,the distance between the particles is ________.

Bromine ( Br2 ) -70 °C

A burn from steam at 100 °C is expected to be more severe than a burn from boiling water at 100 °C because ________.

The phrase "ability to do work" is a definition of ________.

Chemistry in Our Lives

Chemistry and Measurement

Atoms and Elements

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

Gases

Solutions

Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, thiols, ethers, aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, esters, amines, and Amides

Lipids

Amino Acids, proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Metabolic Pathways and Energy Production

Filters

Bromine ( Br₂ ) -70 °C