Question 1

The boiling point of water on the Celsius scale is ________ °C.

Accepted Answer

100

Question 2

3.25 kcal is the same amount of energy as

Accepted Answer

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

Question 3

A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21 °C. After combustion of the french fries, the water has a temperature of 48 °C. What is the caloric value (kcal/g) of the french fries?

Accepted Answer

A)  11 kcal/g 
B)  5.4 kcal/g 
C)  0.14 kcal/g 
D)  4.2 kcal/g 
E)  14 kcal/g 
A)  11 kcal/g 
B)  5.4 kcal/g 
C)  0.14 kcal/g 
D)  4.2 kcal/g 
E)  14 kcal/g B

Question 4

Bromine (BrS1U1B12S1U1B0) 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.
-60 °C

Accepted Answer

boiling or

Question 5

Bromine (BrS1U1B12S1U1B0) 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 (BrS1U1B12S1U1B0) has a freezing point of...

Question 6

650. J is the same amount of energy as

Accepted Answer

A) 2720 cal. 
B) 1550 cal. 
C) 650 cal. 
D) 2.72 cal. 
E) 155 cal. 
A) 2720 cal. 
B) 1550 cal. 
C) 650 cal. 
D) 2.72 cal. 
E) 155 cal.

Question 7

A gold ingot is a(n)

Accepted Answer

A) compound. 
B) heterogeneous mixture. 
C) element. 
D) homogeneous mixture. 
A) compound. 
B) heterogeneous mixture. 
C) element. 
D) homogeneous mixture.

Question 8

Which one of the following properties describes a liquid?

Accepted Answer

A) has a definite shape 
B) particles move very rapidly 
C) fills the entire volume of the container 
D) particles are close together and move randomly 
E) There is essentially no interaction between the particles. 
A) has a definite shape 
B) particles move very rapidly 
C) fills the entire volume of the container 
D) particles are close together and move randomly 
E) There is essentially no interaction between the particles.

Question 9

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

Accepted Answer

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

Question 10

The dietary calorie (Cal)is equal to

Accepted Answer

A) 10 calories. 
B) 100 calories. 
C) 1000 calories. 
D) 1 calorie. 
E) 1000 kilocalories. 
A) 10 calories. 
B) 100 calories. 
C) 1000 calories. 
D) 1 calorie. 
E) 1000 kilocalories.

Question 11

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

Question 12

Which of the following is a property of a solid?

Accepted Answer

A) It fills the volume of the container. 
B) The particles have fixed positions and are very close together. 
C) It takes the shape of the container. 
D) The particles move at a rapid rate. 
E) The interactions between its particles are very weak. 
A) It fills the volume of the container. 
B) The particles have fixed positions and are very close together. 
C) It takes the shape of the container. 
D) The particles move at a rapid rate. 
E) The interactions between its particles are very weak.

Question 13

A diet has a total caloric intake of 1400 kcal. If the protein in the diet provides 35% of the kcal, the number of kcal of protein in the diet is

Accepted Answer

A) 460 kcal. 
B) 210 kcal. 
C) 490 kcal. 
D) 1200 kcal. 
E) 700 kcal. 
A) 460 kcal. 
B) 210 kcal. 
C) 490 kcal. 
D) 1200 kcal. 
E) 700 kcal.

Question 14

A taco from a fast food restaurant contains 7.0 g of fat, 25. g of carbohydrate, and 11 g of protein. How many kJ of energy does the cheeseburger contain? (The caloric values for foods are 38 kJ/g for fat, 17 kJ/g for
Carbohydrate, and 17 kJ/g for protein.)Round off the answer for each food type to the tens place.

Accepted Answer

A) 210 kJ 
B) 890 kJ 
C) 43 kJ 
D) 70 kJ 
E) 1100 kJ 
A) 210 kJ 
B) 890 kJ 
C) 43 kJ 
D) 70 kJ 
E) 1100 kJ

Question 15

The energy of motion is called ________ energy.

Accepted Answer

The answer of The energy of motion is called ________...

Question 16

One cup of kidney beans contains 15 g of protein, 1.0 g of fat, and 42 g of carbohydrate. How many kilocalories does this contain? (The caloric values for foods are 4.0 kcal/g for protein, 9.0 kcal/g for fat, and 4.0 kcal/g for
Carbohydrate.)Round off the answer for each food type to the tens place.

Accepted Answer

A) 250 kcal 
B) 520 kcal 
C) 60 kcal 
D) 230 kcal 
E) 88 kcal 
A) 250 kcal 
B) 520 kcal 
C) 60 kcal 
D) 230 kcal 
E) 88 kcal

Question 17

A slice of pizza contains 29 g of carbohydrate, 13 g of protein and an unknown amount of fat. If the pizza contains 280 kcal, how many grams of fat are present? (The caloric values for foods are 4.0 kcal/g for
Carbohydrate, 4.0 kcal/g for protein, and 9.0 kcal/g for fat.)Round off the answer for each food type to the tens
Place.

Accepted Answer

A) 12 g 
B) 250 g 
C) 55 g 
D) 10. g 
E) 25 g 
A) 12 g 
B) 250 g 
C) 55 g 
D) 10. g 
E) 25 g

Question 18

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

Accepted Answer

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

Question 19

100. J is the same amount of energy as ________ kcal.

Accepted Answer

The answer of 100. J is the same amount of...

Question 20

How many calories are required to increase the temperature of 13 g of ethanol from 11 °C to 23 °C? The specific heat of alcohol is 0.588 cal/g °C.

Accepted Answer

A)  170 cal 
B)  0.54 cal 
C)  83 cal 
D)  0.63 cal 
E)  92 cal 
A)  170 cal 
B)  0.54 cal 
C)  83 cal 
D)  0.63 cal 
E)  92 cal

Exam 3: Matter and Energy

The boiling point of water on the Celsius scale is ________ °C.

3.25 kcal is the same amount of energy as

A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21 °C. After combustion of the french fries, the water has a temperature of 48 °C. What is the caloric value (kcal/g) of the french fries?

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. -60 °C

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

650. J is the same amount of energy as

A gold ingot is a(n)

Which one of the following properties describes a liquid?

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

The dietary calorie (Cal)is equal to

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?

Which of the following is a property of a solid?

A diet has a total caloric intake of 1400 kcal. If the protein in the diet provides 35% of the kcal, the number of kcal of protein in the diet is

The energy of motion is called ________ energy.

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

100. J is the same amount of energy as ________ kcal.

How many calories are required to increase the temperature of 13 g of ethanol from 11 °C to 23 °C? The specific heat of alcohol is 0.588 cal/g °C.

Chemistry in Our Lives

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Reaction Rates and Chemical Equilibrium

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Introduction to Organic Chemistry: Hydrocarbons

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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. -60 °C

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