Question 1

When a solid is converted directly to a gas, the change of state is called

Accepted Answer

A)  freezing. 
B)  melting. 
C)  boiling. 
D)  condensation. 
E)  sublimation. 
A)  freezing. 
B)  melting. 
C)  boiling. 
D)  condensation. 
E)  sublimation. E

Question 2

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

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

Accepted Answer

D

Question 3

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 heated. 
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 heated. D

Question 4

Carbohydrates and proteins have the same caloric value per gram.

Accepted Answer

A) True 
 B)False

Question 5

Identify each of the following transformations as a chemical or physical change 
-formation of green leaves on a plant

Accepted Answer

A) physical 
B) chemical 
A) physical 
B) chemical

Question 6

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

-A
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 7

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 kcal 
A)  5 kcal 
B)  20 kcal 
C)  40 kcal 
D)  60 kcal 
E)  80 kcal

Question 8

Match the state of matter with each of the following descriptions of a substance.
-This substance is boiling.

Accepted Answer

A) solid 
B) liquid 
C) solid + liquid 
D) liquid + gas 
E) gas 
A) solid 
B) liquid 
C) solid + liquid 
D) liquid + gas 
E) gas

Question 9

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 10

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 11

Gold in a wedding ring is 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 12

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

-C
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 13

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 14

Water freezes at 100 °C.

Accepted Answer

A) True 
 B)False

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 °F 
A)  70.5 °F 
B)  311 °F 
C)  126.9 °F 
D)  101.3 °F 
E)  11.7 °F

Question 16

The primary substances of which all other things are composed are

Accepted Answer

A)  molecules. 
B)  compounds. 
C)  elements. 
D)  electrons. 
E)  protons. 
A)  molecules. 
B)  compounds. 
C)  elements. 
D)  electrons. 
E)  protons.

Question 17

As heat is removed from a solid, its temperature decreases.

Accepted Answer

A) True 
 B)False

Question 18

The energy of motion is referred to as

Accepted Answer

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

Question 19

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

Question 20

The units of specific heat are cal g/°F.

Accepted Answer

A) True 
 B)False

Exam 2: Energy and Matter

When a solid is converted directly to a gas, the change of state is called

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

A heating curve illustrates

Carbohydrates and proteins have the same caloric value per gram.

Identify each of the following transformations as a chemical or physical change -formation of green leaves on a plant

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

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?

Match the state of matter with each of the following descriptions of a substance. -This substance is boiling.

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

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.

Gold in a wedding ring is a(n)

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

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

Water freezes at 100 °C.

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

The primary substances of which all other things are composed are

As heat is removed from a solid, its temperature decreases.

The energy of motion is referred to as

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.

The units of specific heat are cal g/°F.

Chemistry and Measurements

Atoms and Elements

Nuclear Chemistry

Compounds and Their Bonds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Alkanes

Alkenes, Alkynes, and Aromatic Compounds

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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