Question 1

A(n) ________ is a substance composed of atoms of two or more elements chemically united in fixed proportions.

Accepted Answer

The answer of A(n) ________ is a substance composed of...

Question 2

________ is the term used to indicate a measuring device is accurate.

Accepted Answer

Graduated ...

Question 3

Give an example of an intensive property.

Accepted Answer

(Answers will vary.)...

Question 4

77 K is colder than 4 K.

Accepted Answer

A) True 
 B)False

Question 5

The SI base unit of mass is

Accepted Answer

A)   mg.
B)   g.
C)   kg.
D)   metric ton.
E)   lb.F) C) and D)
G) B) and D)

Question 6

Which of the following correctly expresses 52.068881 in scientific notation, rounded to three significant figures?

Accepted Answer

A)   5.21 × 10-1
B)   5.20 × 10-1
C)   5.21 × 101 
D)   5.20 × 101
E)   5.21 × 102F) A) and B)
G) B) and D)

Question 7

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Accepted Answer

A homogeneous mixture has a un...

Question 8

If a patient in the hospital is running a temperature of 39.5°C, what is this in degrees Fahrenheit?

Accepted Answer

A)   99°F
B)   101.3°F
C)   102.4°F
D)   103.1°F
E)   104°FF) None of the above
G) A) and D)

Question 9

Which of the following is a 'substance' according to the definition given in your textbook?

Accepted Answer

A)   Air
B)   Tap water
C)   Sea water
D)   Water
E)   ToothpasteF) A) and E)
G) C) and D)

Question 10

The boiling point for liquid helium is 4.0 K. What is the temperature in degrees Fahrenheit?

Accepted Answer

A)   -452.5°F
B)   -498.9°F
C)   -237.2°F
D)   131.8°F
E)   530.9°FF) B) and C)
G) B) and D)

Question 11

50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm3 acetic acid solution must be measured for the experiment?

Accepted Answer

A)   0.0452 mL
B)   45.2 mL
C)   55.3 mL
D)   0.452 mL
E)   4.52 mLF) A) and B)
G) A) and D)

Question 12

Some molecules move with speeds approaching the "escape velocity" from Earth, which is 7.0 miles per second. What is this speed in cm/h? (1 mi = 1609 m)

Accepted Answer

A)   313 cm/h
B)   4.1 × 105 cm/h
C)   4.1 × 109 cm/h
D)   1.1 × 106 cm/h
E)   1.6 × 109 cm/hF) C) and D)
G) A) and E)

Question 13

When applying the scientific method, it is important to avoid any form of hypothesis.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is a chemical change?

Accepted Answer

A)   Boiling water
B)   Melting wax
C)   Broiling a steak on a grill
D)   Condensing water vapor into rainfall
E)   Carving a piece of woodF) A) and E)
G) C) and E)

Question 15

Which of the following is an extensive property?

Accepted Answer

A)   Density
B)   Temperature
C)   Mass
D)   Specific Heat
E)   PressureF) A) and B)
G) A) and C)

Question 16

What is the length of the box, using the proper number of significant figures and units?

Accepted Answer

A)   5.5 cm
B)   5 cm
C)   6 cm
D)   5.67 cm
E)   5.6 cmF) B) and C)
G) B) and D)

Question 17

Which of these is an example of a physical property?

Accepted Answer

A)   Corrosiveness of sulfuric acid
B)   Toxicity of cyanide
C)   Flammability of gasoline
D)   Neutralization of stomach acid with an antacid
E)   Lead becomes a liquid when heated to 601°C.F) B) and E)
G) A) and E)

Question 18

A(n)________ is a substance that cannot be separated into simpler substances by chemical means.

Accepted Answer

The answer of A(n)________ is a substance that cannot be...

Question 19

What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?

Accepted Answer

A)   14.1 cm3
B)   0.0691 cm3
C)   14.5 cm3
D)   141 cm3
E)   691 cm3F) A) and B)
G) A) and C)

Question 20

A ________ mixture does not have a uniform composition throughout.

Accepted Answer

A)   heterogeneous
B)   homologous
C)   homogeneous
D)   heterologousE) None of the above
F) B) and C)

Exam 1: Chemistry: the Central Science

Some molecules move with speeds approaching the "escape velocity" from Earth, which is 7.0 miles per second. What is this speed in cm/h? (1 mi = 1609 m)

Correct AnswerverifiedShow Answer

What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?

Correct AnswerverifiedShow Answer

The SI base unit of mass is

Correct AnswerverifiedShow Answer

________ is the term used to indicate a measuring device is accurate.

Correct AnswerverifiedGraduated ...View AnswerShow Answer

A ________ mixture does not have a uniform composition throughout.

Correct AnswerverifiedShow Answer

What is the length of the box, using the proper number of significant figures and units?

Correct AnswerverifiedShow Answer

Which of these is an example of a physical property?

Correct AnswerverifiedShow Answer

If a patient in the hospital is running a temperature of 39.5°C, what is this in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

Give an example of an intensive property.

Correct Answerverified(Answers will vary.)...View AnswerShow Answer

77 K is colder than 4 K.

Correct AnswerverifiedShow Answer

Which of the following correctly expresses 52.068881 in scientific notation, rounded to three significant figures?

Correct AnswerverifiedShow Answer

A(n) ________ is a substance composed of atoms of two or more elements chemically united in fixed proportions.

Correct AnswerverifiedShow Answer

A(n)________ is a substance that cannot be separated into simpler substances by chemical means.

Correct AnswerverifiedShow Answer

50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm3 acetic acid solution must be measured for the experiment?

Correct AnswerverifiedShow Answer

Which of the following is an extensive property?

Correct AnswerverifiedShow Answer

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Correct AnswerverifiedA homogeneous mixture has a un...View AnswerShow Answer

Which of the following is a chemical change?

Correct AnswerverifiedShow Answer

When applying the scientific method, it is important to avoid any form of hypothesis.

Correct AnswerverifiedShow Answer

Which of the following is a 'substance' according to the definition given in your textbook?

Correct AnswerverifiedShow Answer

The boiling point for liquid helium is 4.0 K. What is the temperature in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

Correct Answer
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What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm³?

Correct Answer
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Graduated ...
View Answer

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(Answers will vary.)...
View Answer

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Correct Answer
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50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm³acetic acid solution must be measured for the experiment?

Correct Answer
verified

Correct Answer
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Correct Answer
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A homogeneous mixture has a un...
View Answer

Correct Answer
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Correct Answer
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