Question 1

The words science and technology are often used incorrectly as synonyms. Distinguish these two terms. Use an example of each.

Accepted Answer

Science and technology are related conce

Question 2

Chemistry is important not only as a separate science but also because it is fundamental to other sciences.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following CANNOT be the chemical symbol for an element?

Accepted Answer

A)  Ca 
B)  Se 
C)  B 
D)  H2 
A)  Ca 
B)  Se 
C)  B 
D)  H2

Question 4

The gravity on the moon is one-sixth that on Earth. What would be the weight of an object on Earth if it has a weight of 40 kg on the moon?

Accepted Answer

A)  6.7 kg 
B)  13.3 kg 
C)  40 kg 
D)  240 kg 
A)  6.7 kg 
B)  13.3 kg 
C)  40 kg 
D)  240 kg

Question 5

Which of the following is a chemical property?

Accepted Answer

A)  Potassium reacts with water to form potassium hydroxide. 
B)  Sugar dissolves in water. 
C)  Sugar is a solid at room temperature. 
D)  Gasoline and water do not mix. 
A)  Potassium reacts with water to form potassium hydroxide. 
B)  Sugar dissolves in water. 
C)  Sugar is a solid at room temperature. 
D)  Gasoline and water do not mix.

Question 6

A variable

Accepted Answer

A)  does not change over the course of the experiment. 
B)  is something that can change over the course of an experiment. 
C)  does not affect the outcome of an experiment. 
D)  can be controlled. 
A)  does not change over the course of the experiment. 
B)  is something that can change over the course of an experiment. 
C)  does not affect the outcome of an experiment. 
D)  can be controlled.

Question 7

A gas is characterized by a(n)

Accepted Answer

A)  definite shape and definite volume. 
B)  definite shape and indefinite volume. 
C)  indefinite shape and definite volume. 
D)  indefinite shape and indefinite volume. 
A)  definite shape and definite volume. 
B)  definite shape and indefinite volume. 
C)  indefinite shape and definite volume. 
D)  indefinite shape and indefinite volume.

Question 8

In the SI system of measurement the unit of mass is the

Accepted Answer

A)  kilogram. 
B)  kilometer. 
C)  liter. 
D)  yard. 
A)  kilogram. 
B)  kilometer. 
C)  liter. 
D)  yard.

Question 9

The prefix nano means ________.

Accepted Answer

A)  a billion 
B)  one-millionth 
C)  one-billionth 
D)  a million 
A)  a billion 
B)  one-millionth 
C)  one-billionth 
D)  a million

Question 10

Which of the following variables would be the easiest to control?

Accepted Answer

A)  atmospheric air pressure 
B)  a teenager's diet 
C)  amount of antibiotic added to a bacterial culture 
D)  political opinion 
A)  atmospheric air pressure 
B)  a teenager's diet 
C)  amount of antibiotic added to a bacterial culture 
D)  political opinion

Question 11

On Mars, gravity is one-third that on Earth. What would be the weight on Mars of a person who has a weight of 200 pounds (lb) on Earth?

Accepted Answer

A)  66.7 lb 
B)  133 lb 
C)  200 lb 
D)  600 lb 
A)  66.7 lb 
B)  133 lb 
C)  200 lb 
D)  600 lb

Question 12

Green chemistry uses

Accepted Answer

A)  only water as a solvent. 
B)  materials and processes that are intended to prevent or reduce pollution at its source. 
C)  only grocery store bought chemicals. 
D)  reactions that are not heated. 
A)  only water as a solvent. 
B)  materials and processes that are intended to prevent or reduce pollution at its source. 
C)  only grocery store bought chemicals. 
D)  reactions that are not heated.

Question 13

Methapyrilene, once an active ingredient in certain over-the-counter sleeping pills, was found to be a potent carcinogen (a substance that causes cancer). The pills were also found to be about as effective as placebos in promoting sleep. The desirability quotient (DQ) for methapyrilene is

Accepted Answer

A)  low. 
B)  moderate. 
C)  high. 
D)  uncertain. 
A)  low. 
B)  moderate. 
C)  high. 
D)  uncertain.

Question 14

________ is considered by many people to play a central role among the sciences.

Accepted Answer

A)  Biology 
B)  Chemistry 
C)  Geology 
D)  Physics 
A)  Biology 
B)  Chemistry 
C)  Geology 
D)  Physics

Question 15

The prefix micro means ________.

Accepted Answer

A)  0.000001 
B)  0.001 
C)  100 
D)  1000 
A)  0.000001 
B)  0.001 
C)  100 
D)  1000

Question 16

The label on a bottle of shampoo lists many ingredients, such as water, sodium laureth sulfate, lauramide DEA, sodium chloride, etc. From this information, shampoo is best classified as

Accepted Answer

A)  a pure substance. 
B)  an element. 
C)  a compound. 
D)  a mixture. 
A)  a pure substance. 
B)  an element. 
C)  a compound. 
D)  a mixture.

Question 17

A student working in the laboratory needs 200.0 g of a liquid chemical whose density is 0.690 g/cm3. What volume of this liquid should he measure?

Accepted Answer

A)  138 cm3 
B)  69.0 cm3 
C)  200. cm3 
D)  290 cm3 
A)  138 cm3 
B)  69.0 cm3 
C)  200. cm3 
D)  290 cm3

Question 18

The prefix deci means ________.

Accepted Answer

A)  0.001 
B)  0.1 
C)  0.01 
D)  100 
A)  0.001 
B)  0.1 
C)  0.01 
D)  100

Question 19

A biochemist is hired by a pharmaceutical firm to synthesize a medical remedy for cancer. This person is engaged in

Accepted Answer

A)  applied research. 
B)  basic research. 
C)  natural speculation. 
D)  medical technology. 
A)  applied research. 
B)  basic research. 
C)  natural speculation. 
D)  medical technology.

Question 20

A person engages in basic research to discover knowledge for the sake of knowing, while a person engages in applied research usually directs that research toward a specific goal.

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry

The words science and technology are often used incorrectly as synonyms. Distinguish these two terms. Use an example of each.

Chemistry is important not only as a separate science but also because it is fundamental to other sciences.

Which of the following CANNOT be the chemical symbol for an element?

The gravity on the moon is one-sixth that on Earth. What would be the weight of an object on Earth if it has a weight of 40 kg on the moon?

Which of the following is a chemical property?

A variable

A gas is characterized by a(n)

In the SI system of measurement the unit of mass is the

The prefix nano means ________.

Which of the following variables would be the easiest to control?

On Mars, gravity is one-third that on Earth. What would be the weight on Mars of a person who has a weight of 200 pounds (lb) on Earth?

Green chemistry uses

Methapyrilene, once an active ingredient in certain over-the-counter sleeping pills, was found to be a potent carcinogen (a substance that causes cancer). The pills were also found to be about as effective as placebos in promoting sleep. The desirability quotient (DQ) for methapyrilene is

________ is considered by many people to play a central role among the sciences.

The prefix micro means ________.

The label on a bottle of shampoo lists many ingredients, such as water, sodium laureth sulfate, lauramide DEA, sodium chloride, etc. From this information, shampoo is best classified as

A student working in the laboratory needs 200.0 g of a liquid chemical whose density is 0.690 g/cm3. What volume of this liquid should he measure?

The prefix deci means ________.

A biochemist is hired by a pharmaceutical firm to synthesize a medical remedy for cancer. This person is engaged in

A person engages in basic research to discover knowledge for the sake of knowing, while a person engages in applied research usually directs that research toward a specific goal.

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Polymers

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters

A student working in the laboratory needs 200.0 g of a liquid chemical whose density is 0.690 g/cm³. What volume of this liquid should he measure?