Question 1

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 2

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.
--7 °C

Accepted Answer

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

Question 3

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. 
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.

Question 4

Which of the following is a physical property of both liquids and gases?

Accepted Answer

A) has its own shape 
B) has a definite volume 
C) has strong interactions between its particles 
D) has randomly arranged particles 
E) has large spaces between molecules 
A) has its own shape 
B) has a definite volume 
C) has strong interactions between its particles 
D) has randomly arranged particles 
E) has large spaces between molecules

Question 5

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 6

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

Question 7

The nutritional calorie (Cal) is the same as ________ cal.

Accepted Answer

The answer of The nutritional calorie (Cal) is the same...

Question 8

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

Question 9

Will the caloric value of a 100.g hamburger be higher or lower than the caloric value of 100. g of cooking oil?

Accepted Answer

The answer of Will the caloric value of a 100.g...

Question 10

Carbohydrates and proteins have the same caloric value per gram.

Accepted Answer

A) True 
 B)False

Question 11

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 12

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, 9.0 kcal/g for fat, and 4.0 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 kcal 
A) 70. kcal 
B) 360 kcal 
C) 17 kcal 
D) 630 kcal 
E) 280 kcal

Question 13

A reaction of a substance with water is an example of a ________ property.

Accepted Answer

The answer of A reaction of a substance with water...

Question 14

Molecules of a gas are very close together.

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

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

Question 16

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? Report the answer to 2 significant figures.

Accepted Answer

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

Question 17

The temperature of liquid nitrogen is - 196 °C. What is the corresponding reading on the Kelvin scale?

Accepted Answer

A) 77 K 
B) -127 K 
C) -91 K 
D) 48 K 
E) 146 K 
A) 77 K 
B) -127 K 
C) -91 K 
D) 48 K 
E) 146 K

Question 18

The units of specific heat are ________.

Accepted Answer

The answer of The units of specific heat are ________....

Question 19

Global warming 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 20

The lowest temperature on the Kelvin scale is ________ kelvin.

Accepted Answer

The answer of The lowest temperature on the Kelvin scale...

Exam 3: Energy and Matter

In a gas, the distance between the particles is

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

Which of the following is a property of a solid?

Which of the following is a physical property of both liquids and gases?

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

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

The nutritional calorie (Cal) is the same as ________ cal.

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?

Will the caloric value of a 100.g hamburger be higher or lower than the caloric value of 100. g of cooking oil?

Carbohydrates and proteins have the same caloric value per gram.

Which of the following is an example of potential energy?

A reaction of a substance with water is an example of a ________ property.

Molecules of a gas are very close together.

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

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? Report the answer to 2 significant figures.

The temperature of liquid nitrogen is - 196 °C. What is the corresponding reading on the Kelvin scale?

The units of specific heat are ________.

Global warming is believed to result from all of the following except

The lowest temperature on the Kelvin scale is ________ kelvin.

Chemistry in Our Lives

Chemistry and Measurements

Atoms

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

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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. --7 °C