Question 1

The prefix micro means ________.

Accepted Answer

A)  0.000001
B)  0.001
C)  100
D)  1000E) B) and D)
F) A) and D)

Question 2

Green chemistry uses materials and methods that are designed to prevent or reduce pollution.

Accepted Answer

A) True 
 B)False

Question 3

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 opinionE) A) and B)
F) C) and D)

Question 4

Which of these is a chemical change?

Accepted Answer

A)  The hair stylist cuts your hair.
B)  Bleaching powder dissolves in water.
C)  Silkworms convert mulberry leaves into silk.
D)  Wool is spun into yarn.E) All of the above
F) C) and D)

Question 5

A solution is another name for a(n)

Accepted Answer

A)  compound.
B)  element.
C)  heterogeneous mixture.
D)  homogeneous mixture.E) B) and C)
F) All of the above

Question 6

The SI unit for temperature is the

Accepted Answer

A)  Calorie.
B)  Celsius.
C)  Fahrenheit.
D)  Kelvin.E) A) and B)
F) None of the above

Question 7

A chemist is hired by a major petroleum company to do research into developing a gasoline mixture that burns more efficiently in automobile engines.This is best described as ________ research.

Accepted Answer

The answer of A chemist is hired by a major...

Question 8

Most molecules have dimensions in the nanometer (nm) or ________ range.

Accepted Answer

A)  centimeter (cm) 
B)  millimeter (mm) 
C)  kilometer (km) 
D)  picometer (pm) E) A) and B)
F) B) and C)

Question 9

It is possible to prove that an hypothesis is absolutely true.

Accepted Answer

A) True 
 B)False

Question 10

Use the automobile and automobile travel to explain risk-benefit analysis.

Accepted Answer

Risk-benefit analysis is a decision-maki...

Question 11

The boiling point of water on the Celsius temperature scale is

Accepted Answer

A)  100°C.
B)  212°C.
C)  273°C.
D)  373°C.E) B) and D)
F) C) and D)

Question 12

The prefix nano means ________.

Accepted Answer

A)  10³
B)  10⁻⁹
C)  10⁶
D)  10⁹E) All of the above
F) A) and D)

Question 13

The density of lead is 11.3 g/cm³.What mass of lead is required to make a 1.00 cm³ fishing sinker?

Accepted Answer

A)  1.00 g
B)  1.13 g
C)  11.3 g
D)  113 gE) C) and D)
F) A) and C)

Question 14

Organic foods do not contain chemicals.

Accepted Answer

A) True 
 B)False

Question 15

All clothing contains chemicals.

Accepted Answer

A) True 
 B)False

Question 16

A substance that cannot be broken down by chemical means into simpler substances is called a(n)

Accepted Answer

A)  solid.
B)  element.
C)  compound.
D)  mixture.E) B) and D)
F) B) and C)

Question 17

Matter is a measure of the amount of mass in an object.

Accepted Answer

A) True 
 B)False

Question 18

The symbol for the prefix micro is ________.

Accepted Answer

A)  M
B)  m
C)  mm
D)  μE) None of the above
F) All of the above

Question 19

The prefix mega means ________.

Accepted Answer

A)  10⁻⁶
B)  10⁻³
C)  10³
D)  10⁶E) A) and D)
F) B) and C)

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry

Green chemistry uses materials and methods that are designed to prevent or reduce pollution.

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Most molecules have dimensions in the nanometer (nm) or ________ range.

Correct AnswerverifiedShow Answer

The density of lead is 11.3 g/cm³.What mass of lead is required to make a 1.00 cm³ fishing sinker?

Correct AnswerverifiedShow Answer

Use the automobile and automobile travel to explain risk-benefit analysis.

Correct AnswerAnswered by ExamLex AIRisk-benefit analysis is a decision-maki...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

The prefix nano means ________.

Correct AnswerverifiedShow Answer

A chemist is hired by a major petroleum company to do research into developing a gasoline mixture that burns more efficiently in automobile engines.This is best described as ________ research.

Correct AnswerverifiedShow Answer

Which of these is a chemical change?

Correct AnswerverifiedShow Answer

A substance that cannot be broken down by chemical means into simpler substances is called a(n)

Correct AnswerverifiedShow Answer

A solution is another name for a(n)

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Organic foods do not contain chemicals.

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The prefix mega means ________.

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The prefix micro means ________.

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All clothing contains chemicals.

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The boiling point of water on the Celsius temperature scale is

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The symbol for the prefix micro is ________.

Correct AnswerverifiedShow Answer

Matter is a measure of the amount of mass in an object.

Correct AnswerverifiedShow Answer

It is possible to prove that an hypothesis is absolutely true.

Correct AnswerverifiedShow Answer

The SI unit for temperature is the

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

Correct AnswerverifiedShow Answer

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Answered by ExamLex AI
Risk-benefit analysis is a decision-maki...
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