Question 1

Liquid water changing to ice is an example of a ________ change.

Accepted Answer

physical

Question 2

Which of the following is a chemical change?

Accepted Answer

A) cutting a rope 
B) bending a steel rod 
C) making a snowman 
D) burning sugar 
E) melting gold 
A) cutting a rope 
B) bending a steel rod 
C) making a snowman 
D) burning sugar 
E) melting gold D

Question 3

How many calories are required to raise the temperature of a 150.g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C.

Accepted Answer

A) 4.62 cal 
B) 116 cal 
C) 22500 cal 
D) 693 cal 
E) 130.cal 
A) 4.62 cal 
B) 116 cal 
C) 22500 cal 
D) 693 cal 
E) 130.cal D

Question 4

Bromine   )has a freezing point of -7 °C,and a boiling point of 60 °C.
Indicate the state present or the change of state occurring at each temperature.
--15 °C

Accepted Answer

The answer of Bromine   )has a freezing point...

Question 5

Water freezes at 100 °C.

Accepted Answer

A) True 
 B)False

Question 6

The ________ state of matter has a constant shape and volume.

Accepted Answer

The answer of The ________ state of matter has a...

Question 7

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 8

Kinetic energy is the energy of motion.

Accepted Answer

A) True 
 B)False

Question 9

The specific heat has units of kcal.

Accepted Answer

A) True 
 B)False

Question 10

Coins in a piggy bank are an example of 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 11

Which of the following quantities is not required to calculate the amount of heat energy required to heat water from 25 °C to 55 °C?

Accepted Answer

A) the mass of the water sample 
B) the initial temperature 
C) the final temperature 
D) the specific heat of water 
E) the heat of vaporization for water 
A) the mass of the water sample 
B) the initial temperature 
C) the final temperature 
D) the specific heat of water 
E) the heat of vaporization for water

Question 12

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 13

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

Question 14

A temperature of 50.°F is equivalent to ________°C.

Accepted Answer

The answer of A temperature of 50.°F is equivalent to...

Question 15

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 16

One gram of fat has less energy that one gram of protein.

Accepted Answer

A) True 
 B)False

Question 17

A food sample contains 6 g of carbohydrate and 4 g of protein.How many kcal from carbohydrate and protein are in the sample?

Accepted Answer

The answer of A food sample contains 6 g of...

Question 18

3.25 kcal is the same amount of energy as ________.

Accepted Answer

A) 3.25 J 
B) 0.777 J 
C) 777 J 
D) 13600 J 
E) 13.6 J 
A) 3.25 J 
B) 0.777 J 
C) 777 J 
D) 13600 J 
E) 13.6 J

Question 19

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 20

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

Accepted Answer

A) True 
 B)False

Liquid water changing to ice is an example of a ________ change.

Which of the following is a chemical change?

How many calories are required to raise the temperature of a 150.g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C.

Bromine )has a freezing point of -7 °C,and a boiling point of 60 °C. Indicate the state present or the change of state occurring at each temperature. --15 °C

Water freezes at 100 °C.

The ________ state of matter has a constant shape and volume.

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.

Kinetic energy is the energy of motion.

The specific heat has units of kcal.

Coins in a piggy bank are an example of a(n)________.

Which of the following quantities is not required to calculate the amount of heat energy required to heat water from 25 °C to 55 °C?

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

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

A temperature of 50.°F is equivalent to ________°C.

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

One gram of fat has less energy that one gram of protein.

A food sample contains 6 g of carbohydrate and 4 g of protein.How many kcal from carbohydrate and protein are in the sample?

3.25 kcal is the same amount of energy as ________.

The energy stored in molecules is ________.

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

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

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Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

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Exam 3: Matter and Energy

Liquid water changing to ice is an example of a ________ change.

Which of the following is a chemical change?

How many calories are required to raise the temperature of a 150.g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C.

Bromine )has a freezing point of -7 °C,and a boiling point of 60 °C. Indicate the state present or the change of state occurring at each temperature. --15 °C

Water freezes at 100 °C.

The ________ state of matter has a constant shape and volume.

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.

Kinetic energy is the energy of motion.

The specific heat has units of kcal.

Coins in a piggy bank are an example of a(n)________.

Which of the following quantities is not required to calculate the amount of heat energy required to heat water from 25 °C to 55 °C?

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

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

A temperature of 50.°F is equivalent to ________°C.

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

One gram of fat has less energy that one gram of protein.

A food sample contains 6 g of carbohydrate and 4 g of protein.How many kcal from carbohydrate and protein are in the sample?

3.25 kcal is the same amount of energy as ________.

The energy stored in molecules is ________.

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

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