Question 1

Condensation occurs when a liquid is converted to a solid.

Accepted Answer

A) True 
 B)False

Question 2

An example of kinetic energy is

Accepted Answer

A)  a coiled spring. 
B)  running water. 
C)  a tree. 
D)  natural gas. 
E)  chemical energy. 
A)  a coiled spring. 
B)  running water. 
C)  a tree. 
D)  natural gas. 
E)  chemical energy.

Question 3

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

Accepted Answer

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

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

Which of the following is a chemical change?

Accepted Answer

A)  cutting a rope 
B)  bending a steel rod 
C)  making a snowman 
D)  burning sugar 
E)  melting gold 
A)  cutting a rope 
B)  bending a steel rod 
C)  making a snowman 
D)  burning sugar 
E)  melting gold

Question 6

Which of the following is an example of a physical change?

Accepted Answer

A)  grinding coffee beans 
B)  baking a cake 
C)  converting water to hydrogen and oxygen 
D)  digesting a cheeseburger 
E)  burning coal 
A)  grinding coffee beans 
B)  baking a cake 
C)  converting water to hydrogen and oxygen 
D)  digesting a cheeseburger 
E)  burning coal

Question 7

Identify each of the following transformations as a chemical or physical change 
-a nail rusting

Accepted Answer

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

Question 8

As a solid melts, its temperature does not change.

Accepted Answer

A) True 
 B)False

Question 9

The dietary calorie (Cal) is equal to ( 2.6)

Accepted Answer

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

Question 10

Identify each of the following transformations as a chemical or physical change 
-water evaporating

Accepted Answer

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

Question 11

Water vapor is a gas.

Accepted Answer

A) True 
 B)False

Question 12

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 13

When a liquid boils, the process by which the molecules leave its surface is called __________.

Accepted Answer

The answer of When a liquid boils, the process by...

Question 14

Which of the following does NOT involve a change of state?

Accepted Answer

A)  melting ice 
B)  freezing water 
C)  vaporization of alcohol 
D)  sublimation of dry ice 
E)  pouring water into a vacuum-insulated bottle 
A)  melting ice 
B)  freezing water 
C)  vaporization of alcohol 
D)  sublimation of dry ice 
E)  pouring water into a vacuum-insulated bottle

Question 15

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 16

Identify each of the following transformations as a chemical or physical change 
-a button falling off of a shirt

Accepted Answer

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

Question 17

Identify each of the following transformations as a chemical or physical change 
-melting ice

Accepted Answer

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

Question 18

A solid has a constant shape and volume.

Accepted Answer

A) True 
 B)False

Question 19

Identify each of the following transformations as a chemical or physical change 
-cutting the grass

Accepted Answer

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

Question 20

Air 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.

Exam 2: Energy and Matter

Condensation occurs when a liquid is converted to a solid.

An example of kinetic energy is

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

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

Which of the following is a chemical change?

Which of the following is an example of a physical change?

Identify each of the following transformations as a chemical or physical change -a nail rusting

As a solid melts, its temperature does not change.

The dietary calorie (Cal) is equal to ( 2.6)

Identify each of the following transformations as a chemical or physical change -water evaporating

Water vapor is a gas.

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

When a liquid boils, the process by which the molecules leave its surface is called __________.

Which of the following does NOT involve a change of state?

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

Identify each of the following transformations as a chemical or physical change -a button falling off of a shirt

Identify each of the following transformations as a chemical or physical change -melting ice

A solid has a constant shape and volume.

Identify each of the following transformations as a chemical or physical change -cutting the grass

Air is a(n)

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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