Question 1

Water vapor is a gas.

Accepted Answer

A) True 
 B)False

Question 2

Which one of the following properties describes a liquid?

Accepted Answer

A)  has its own shape
B)  particles are close together and move randomly
C)  particles move very rapidly
D)  fills the entire volume of the container
E)  There is essentially no interaction between the particles.F) C) and E)
G) All of the above

Question 3

One cup of kidney beans contains 15 g of protein,1 g of fat,and 42 g of carbohydrate.How many kilocalories,to two significant figures,does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.)

Accepted Answer

A)  60.kcal
B)  88 kcal
C)  230 kcal
D)  240 kcal
E)  520 kcalF) A) and E)
G) D) and E)

Question 4

Carbohydrates and proteins have the same caloric value per gram.

Accepted Answer

A) True 
 B)False

Question 5

A cheeseburger from a fast food restaurant contains 19 g of fat,20 g of carbohydrate,and 28 g of protein.How many kcal of energy does the cheeseburger contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.) Give the answer to 2 significant figures.

Accepted Answer

A)  70.kcal
B)  360 kcal
C)  17 kcal
D)  630 kcal
E)  280 kcalF) A) and B)
G) A) and C)

Question 6

A potato contains 20 g of carbohydrate.If carbohydrate has a caloric value of 4 kcal/g,how many kcal are obtained from the carbohydrate in the potato?

Accepted Answer

A)  5 kcal
B)  20 kcal
C)  40 kcal
D)  60 kcal
E)  80 kcalF) B) and D)
G) All of the above

Question 7

Steam at 100 °C contains the same amount of heat as liquid water at 100 °C.

Accepted Answer

A) True 
 B)False

Question 8

Air is a heterogeneous mixture.

Accepted Answer

A) True 
 B)False

Question 9

The specific heat of copper is 0.0920 cal/g °C,and the specific heat of silver is  If 100 cal of heat is added to one g of each metal at 25 °C,what is the expected result?

Accepted Answer

A)  The copper will reach a higher temperature.
B)  The silver will reach a higher temperature.
C)  The two samples will reach the same temperature.
D)  The copper will reach a temperature lower than 25 °C.
E)  The silver will soften.F) C) and E)
G) A) and B)

Question 10

Air is an example of a ________ mixture.

Accepted Answer

The answer of Air is an example of a ________...

Question 11

The temperature at which water melts and freezes is the same.

Accepted Answer

A) True 
 B)False

Question 12

A liquid has its own volume and shape.

Accepted Answer

A) True 
 B)False

Question 13

The heat of fusion for water is 80.cal/g.How many calories of heat are released when 20.0 g of water at  is frozen to ice?

Accepted Answer

A)  620 cal
B)  1600 cal
C)  2000 cal
D)  2200 cal
E)  0 calF) A) and D)
G) A) and E)

Question 14

Which of the following is not an element?

Accepted Answer

A)  tin
B)  water
C)  gold
D)  silver
E)  carbonF) A) and C)
G) None of the above

Question 15

A patient has a temperature of 38.5 °C.What is the temperature in degrees Fahrenheit?

Accepted Answer

A)  70.5 °F
B)  311 °F
C)  126.9 °F
D)  101.3 °F
E)  11.7 °FF) A) and E)
G) None of the above

Question 16

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.F) All of the above
G) B) and E)

Question 17

A bungee jumper just before she leaps,has ________ energy.

Accepted Answer

The answer of A bungee jumper just before she leaps,has...

Question 18

Ice melting is a chemical change.

Accepted Answer

A) True 
 B)False

Question 19

A heating curve illustrates ________.

Accepted Answer

A)  what a substance looks like as it is heated
B)  what happens to the particles of a substance as it is heated
C)  what happens to the heat applied as the temperature is increased
D)  the changes in the temperature and physical state of a substance as it is heated
E)  the chemical changes that occur as the substance is heatedF) A) and C)
G) A) and E)

Question 20

The energy of motion is referred to as ________.

Accepted Answer

A)  work
B)  freezing
C)  specific heat
D)  potential energy
E)  kinetic energyF) C) and E)
G) B) and D)

Exam 3: Matter and Energy

Carbohydrates and proteins have the same caloric value per gram.

Correct AnswerverifiedShow Answer

A cheeseburger from a fast food restaurant contains 19 g of fat,20 g of carbohydrate,and 28 g of protein.How many kcal of energy does the cheeseburger contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.) Give the answer to 2 significant figures.

Correct AnswerverifiedShow Answer

One cup of kidney beans contains 15 g of protein,1 g of fat,and 42 g of carbohydrate.How many kilocalories,to two significant figures,does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.)

Correct AnswerverifiedShow Answer

A patient has a temperature of 38.5 °C.What is the temperature in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

A liquid has its own volume and shape.

Correct AnswerverifiedShow Answer

A heating curve illustrates ________.

Correct AnswerverifiedShow Answer

A bungee jumper just before she leaps,has ________ energy.

Correct AnswerverifiedShow Answer

Steam at 100 °C contains the same amount of heat as liquid water at 100 °C.

Correct AnswerverifiedShow Answer

The heat of fusion for water is 80.cal/g.How many calories of heat are released when 20.0 g of water at is frozen to ice?

Correct AnswerverifiedShow Answer

Which one of the following properties describes a liquid?

Correct AnswerverifiedShow Answer

Ice melting is a chemical change.

Correct AnswerverifiedShow Answer

The specific heat of copper is 0.0920 cal/g °C,and the specific heat of silver is If 100 cal of heat is added to one g of each metal at 25 °C,what is the expected result?

Correct AnswerverifiedShow Answer

The energy of motion is referred to as ________.

Correct AnswerverifiedShow Answer

Water vapor is a gas.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not an element?

Correct AnswerverifiedShow Answer

The temperature at which water melts and freezes is the same.

Correct AnswerverifiedShow Answer

Air is a heterogeneous mixture.

Correct AnswerverifiedShow Answer

A potato contains 20 g of carbohydrate.If carbohydrate has a caloric value of 4 kcal/g,how many kcal are obtained from the carbohydrate in the potato?

Correct AnswerverifiedShow Answer

Air is an example of a ________ mixture.

Correct AnswerverifiedShow Answer

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