Question 1

Identify each of the following transformations as a chemical or physical change 
-placing photographs in a scrapbook

Accepted Answer

A)  physical
B)  chemicalC) A) and B)
D) undefined

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) All of the above
G) D) and E)

Question 3

The specific heat of copper is 0.0920 cal/g °C, and the specific heat of silver is 0.0562 cal/g °C. 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) B) and D)
G) A) and D)

Question 4

A kilocalorie of heat is required to raise the temperature of

Accepted Answer

A)   1 g of water from 14 °C to 15 °C.
B)   1 g of water by 10 °C.
C)   10 g of water by 10 °C.
D)   100 g of water by 10 °C.
E)   100 g of water by 100 °C.F) A) and D)
G) B) and D)

Question 5

Match the state of matter with each of the following descriptions of a substance.
-This material has a definite volume, and a definite shape.

Accepted Answer

A)  solid
B)  liquid
C)  solid + liquid
D)  liquid + gas
E)  gasF) A) and B)
G) B) and D)

Question 6

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C.
Indicate the state or change of state occurring at each temperature.
-30 °C

Accepted Answer

The answer of Bromine (Br₂) has a freezing point of...

Question 7

Which of the following is a property of a solid?

Accepted Answer

A)   It takes the shape of the container.
B)   It fills the volume of the container.
C)   The particles move at a rapid rate.
D)   The interactions between its particles are very weak.
E)   The particles have fixed positions and are very close together.F) None of the above
G) C) and D)

Question 8

Identify each of the following transformations as a chemical or physical change 
-baking a cake

Accepted Answer

A)  physical
B)  chemicalC) A) and B)
D) undefined

Question 9

Identify the physical state(s) corresponding to the regions on the cooling curve below.

-B
A) solid and gas
B) liquid and gas
C) gas
D) liquid and solid
E) solid
F) liquid

Accepted Answer

The answer of Identify the physical state(s) corresponding to the...

Question 10

If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?

Accepted Answer

A)   225 K
B)   218 K
C)   55 K
D)   273 K
E)   328 KF) D) and E)
G) B) and D)

Question 11

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 accepted caloric values for foods are 4.0 kcal/g for carbohydrate, 9 kcal/g for fat, and 4 kcal/g for protein.)  Report 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 12

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 °CF) B) and D)
G) C) and D)

Question 13

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C.
Indicate the state or change of state occurring at each temperature.
--7 °C

Accepted Answer

The answer of Bromine (Br₂) has a freezing point of...

Question 14

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.F) A) and B)
G) B) and E)

Question 15

The energy stored in the chemical bonds of a carbohydrate molecule is

Accepted Answer

A)   specific heat.
B)   kinetic energy.
C)   potential energy.
D)   work.
E)   a calorie.F) C) and D)
G) B) and D)

Question 16

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.F) A) and D)
G) A) and E)

Question 17

Identify the physical state(s) corresponding to the regions on the cooling curve below.

-E
A) solid and gas
B) liquid and gas
C) gas
D) liquid and solid
E) solid
F) liquid

Accepted Answer

The answer of Identify the physical state(s) corresponding to the...

Question 18

Which of the following would NOT be a physical change?

Accepted Answer

A)   freezing water to make ice cubes
B)   tearing a piece of aluminum foil
C)   boiling water for soup
D)   burning gasoline in a lawnmower
E)   melting gold to make jewelryF) B) and E)
G) A) and B)

Question 19

The number of calories needed to raise the temperature of 32 g of water from 12 °C to 54 °C is

Accepted Answer

A)   384 cal.
B)   1.3 cal.
C)   1300 cal.
D)   1700 cal.
E)   0.76 cal.F) All of the above
G) B) and D)

Question 20

The simplest type of pure substance is an __________.

Accepted Answer

The answer of The simplest type of pure substance is...

Exam 2: Energy and Matter

If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?

Correct Answer
verified

Identify each of the following transformations as a chemical or physical change -baking a cake

Correct Answer
verified

The simplest type of pure substance is an __________.

Correct Answer
verified

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

Correct Answer
verified

Identify the physical state(s) corresponding to the regions on the cooling curve below. -E A) solid and gas B) liquid and gas C) gas D) liquid and solid E) solid F) liquid

Correct Answer
verified

Identify each of the following transformations as a chemical or physical change -placing photographs in a scrapbook

Correct Answer
verified

The number of calories needed to raise the temperature of 32 g of water from 12 °C to 54 °C is

Correct Answer
verified

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C. Indicate the state or change of state occurring at each temperature. --7 °C

Correct Answer
verified

Which of the following would NOT be a physical change?

Correct Answer
verified

The energy stored in the chemical bonds of a carbohydrate molecule is

Correct Answer
verified

In a gas, the distance between the particles is

Correct Answer
verified

The specific heat of copper is 0.0920 cal/g °C, and the specific heat of silver is 0.0562 cal/g °C. If 100 cal of heat is added to one g of each metal at 25 °C, what is the expected result?

Correct Answer
verified

Which one of the following properties describes a liquid?

Correct Answer
verified

Correct Answer
verified

Which of the following is a property of a solid?

Correct Answer
verified

Match the state of matter with each of the following descriptions of a substance. -This material has a definite volume, and a definite shape.

Correct Answer
verified

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

Correct Answer
verified

A kilocalorie of heat is required to raise the temperature of

Correct Answer
verified

Identify the physical state(s) corresponding to the regions on the cooling curve below. -B A) solid and gas B) liquid and gas C) gas D) liquid and solid E) solid F) liquid

Correct Answer
verified

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C. Indicate the state or change of state occurring at each temperature. -30 °C

Correct Answer
verified

Exam 2: Energy and Matter

If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?

Correct AnswerverifiedShow Answer

Identify each of the following transformations as a chemical or physical change -baking a cake

Correct AnswerverifiedShow Answer

The simplest type of pure substance is an __________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Identify the physical state(s) corresponding to the regions on the cooling curve below. -E A) solid and gas B) liquid and gas C) gas D) liquid and solid E) solid F) liquid

Correct AnswerverifiedShow Answer

Identify each of the following transformations as a chemical or physical change -placing photographs in a scrapbook

Correct AnswerverifiedShow Answer

The number of calories needed to raise the temperature of 32 g of water from 12 °C to 54 °C is

Correct AnswerverifiedShow Answer

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C. Indicate the state or change of state occurring at each temperature. --7 °C

Correct AnswerverifiedShow Answer

Which of the following would NOT be a physical change?

Correct AnswerverifiedShow Answer

The energy stored in the chemical bonds of a carbohydrate molecule is

Correct AnswerverifiedShow Answer

In a gas, the distance between the particles is

Correct AnswerverifiedShow Answer

The specific heat of copper is 0.0920 cal/g °C, and the specific heat of silver is 0.0562 cal/g °C. If 100 cal of heat is added to one g of each metal at 25 °C, what is the expected result?

Correct AnswerverifiedShow Answer

Which one of the following properties describes a liquid?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is a property of a solid?

Correct AnswerverifiedShow Answer

Match the state of matter with each of the following descriptions of a substance. -This material has a definite volume, and a definite shape.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A kilocalorie of heat is required to raise the temperature of

Correct AnswerverifiedShow Answer

Identify the physical state(s) corresponding to the regions on the cooling curve below. -B A) solid and gas B) liquid and gas C) gas D) liquid and solid E) solid F) liquid

Correct AnswerverifiedShow Answer

Bromine (Br₂) has a freezing point of -7 °C, and a boiling point of 60 °C. Indicate the state or change of state occurring at each temperature. -30 °C

Correct AnswerverifiedShow Answer

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