Question 1

When a liquid is boiling,its temperature does not change.

Accepted Answer

A) True 
 B)False

Question 2

To calculate the Kelvin temperature,subtract 273 from the Celsius temperature.

Accepted Answer

A) True 
 B)False

Question 3

A serving of fish contains 50 g protein and 4 g of fat.If protein has a caloric value of 4 kcal/g and fat has 9 kcal/g,how many kcal are in the serving? Give the answer to 2 significant figures.

Accepted Answer

A) 240 kcal 
B) 54 kcal 
C) 470 kcal 
D) 220 kcal 
E) 490 kcal 
A) 240 kcal 
B) 54 kcal 
C) 470 kcal 
D) 220 kcal 
E) 490 kcal

Question 4

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 5

Which of the following is an example of potential energy?

Accepted Answer

A) chewing food 
B) water stored in a reservoir 
C) burning wood 
D) a fan blade turning 
E) riding an exercise bike 
A) chewing food 
B) water stored in a reservoir 
C) burning wood 
D) a fan blade turning 
E) riding an exercise bike

Question 6

On a heating curve a plateau corresponds to ________.

Accepted Answer

A) a change in temperature of a liquid 
B) a change in temperature of a solid 
C) a change in temperature of a gas 
D) a change of state 
E) the solid being broken into smaller pieces 
A) a change in temperature of a liquid 
B) a change in temperature of a solid 
C) a change in temperature of a gas 
D) a change of state 
E) the solid being broken into smaller pieces

Question 7

Which of the following is an element?

Accepted Answer

A) tin 
B) water 
C) salt 
D) sugar 
E) iced tea 
A) tin 
B) water 
C) salt 
D) sugar 
E) iced tea

Question 8

If the heat of fusion for water is 80.cal/g,how many calories are needed to melt 45.0 g of ice at 0 °C?

Accepted Answer

A) 3.6 cal 
B) 3.6 ×   cal 
C) 1.8 cal 
D) 80.cal 
E) 0.56 cal 
A) 3.6 cal 
B) 3.6 ×   cal 
C) 1.8 cal 
D) 80.cal 
E) 0.56 cal

Question 9

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.

Accepted Answer

A) 38 cal 
B) 1.1 cal 
C) 3.8 cal 
D) 93 cal 
E) 130 cal 
A) 38 cal 
B) 1.1 cal 
C) 3.8 cal 
D) 93 cal 
E) 130 cal

Question 10

In which of the following would the particles move most rapidly?

Accepted Answer

A) ice at -20 °C 
B) water at 20 °C 
C) steam at 110 °C 
D) boiling water 
E) ice at 0 °C 
A) ice at -20 °C 
B) water at 20 °C 
C) steam at 110 °C 
D) boiling water 
E) ice at 0 °C

Question 11

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 12

Absolute zero is ________.

Accepted Answer

A) the freezing point of water using the Celsius scale 
B) the boiling point of liquid nitrogen 
C) the temperature on the Kelvin scale corresponding to 32 °F 
D) the coldest temperature possible 
E) the freezing point of liquid nitrogen 
A) the freezing point of water using the Celsius scale 
B) the boiling point of liquid nitrogen 
C) the temperature on the Kelvin scale corresponding to 32 °F 
D) the coldest temperature possible 
E) the freezing point of liquid nitrogen

Question 13

Match between columns
                        Premises: This substance is melting.
Great distances exist between the particles.
Particles are held close together in a random pattern.
This material has a definite volume,and a definite shape.
This substance is boiling.

Accepted Answer

The Answer of solid + liquid and liquid + gas is...

Question 14

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 15

The physical state(s)present when a substance is melting is (are)________.

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) solid + liquid 
E) liquid + gas 
A) solid 
B) liquid 
C) gas 
D) solid + liquid 
E) liquid + gas

Question 16

Iron rusting is an example of a ________ change.

Accepted Answer

The answer of Iron rusting is an example of a...

Question 17

Which of the following is a chemical change?

Accepted Answer

A) burning natural gas 
B) melting ice 
C) hammering gold into foil 
D) cutting a tomato 
E) cutting paper 
A) burning natural gas 
B) melting ice 
C) hammering gold into foil 
D) cutting a tomato 
E) cutting paper

Question 18

Helium is a(n)________.

Accepted Answer

A) compound 
B) heterogeneous mixture 
C) element 
D) homogeneous mixture 
E) electron 
A) compound 
B) heterogeneous mixture 
C) element 
D) homogeneous mixture 
E) electron

Question 19

The specific heat of a substance is the amount of heat needed to ________.

Accepted Answer

A) change 1 g of the substance from the solid to the liquid state 
B) raise the temperature of 1 g of the substance by 1 °C 
C) change 1 g of the substance from the liquid to the solid state 
D) convert 1 g of a liquid to gas 
E) convert 1 g of a solid to a gas 
A) change 1 g of the substance from the solid to the liquid state 
B) raise the temperature of 1 g of the substance by 1 °C 
C) change 1 g of the substance from the liquid to the solid state 
D) convert 1 g of a liquid to gas 
E) convert 1 g of a solid to a gas

Question 20

On a hot day,the thermometer read 95 °F.What is the temperature in degrees Celsius?

Accepted Answer

A) 77 °C 
B) 113 °C 
C) 35 °C 
D) 63 °C 
E) 178 °C 
A) 77 °C 
B) 113 °C 
C) 35 °C 
D) 63 °C 
E) 178 °C

When a liquid is boiling,its temperature does not change.

To calculate the Kelvin temperature,subtract 273 from the Celsius temperature.

A serving of fish contains 50 g protein and 4 g of fat.If protein has a caloric value of 4 kcal/g and fat has 9 kcal/g,how many kcal are in the serving? Give the answer to 2 significant figures.

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

Which of the following is an example of potential energy?

On a heating curve a plateau corresponds to ________.

Which of the following is an element?

If the heat of fusion for water is 80.cal/g,how many calories are needed to melt 45.0 g of ice at 0 °C?

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.

In which of the following would the particles move most rapidly?

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 ________.

Absolute zero is ________.

Gold in a ring is a(n)________.

The physical state(s)present when a substance is melting is (are)________.

Iron rusting is an example of a ________ change.

Which of the following is a chemical change?

Helium is a(n)________.

The specific heat of a substance is the amount of heat needed to ________.

On a hot day,the thermometer read 95 °F.What is the temperature in degrees Celsius?

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

Exam 3: Matter and Energy

When a liquid is boiling,its temperature does not change.

To calculate the Kelvin temperature,subtract 273 from the Celsius temperature.

A serving of fish contains 50 g protein and 4 g of fat.If protein has a caloric value of 4 kcal/g and fat has 9 kcal/g,how many kcal are in the serving? Give the answer to 2 significant figures.

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

Which of the following is an example of potential energy?

On a heating curve a plateau corresponds to ________.

Which of the following is an element?

If the heat of fusion for water is 80.cal/g,how many calories are needed to melt 45.0 g of ice at 0 °C?

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.

In which of the following would the particles move most rapidly?

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 ________.

Absolute zero is ________.

Gold in a ring is a(n)________.

The physical state(s)present when a substance is melting is (are)________.

Iron rusting is an example of a ________ change.

Which of the following is a chemical change?

Helium is a(n)________.

The specific heat of a substance is the amount of heat needed to ________.

On a hot day,the thermometer read 95 °F.What is the temperature in degrees Celsius?

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