Question 1

The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?

Accepted Answer

A)  1.34 × 10-13 m
B)  1.34 × 10-12 m
C)  1.34 × 10-10 m
D)  1.34 × 10-7 m
E)  1.34 × 10-6 mF) A) and C)
G) D) and E) C

Question 2

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in meters.(1 mi = 1609 m)

Accepted Answer

A)  6.1 × 105 m
B)  5.3 × 105 m
C)  3.9 × 108 m
D)  1.5 × 105 m
E)  9.4 × 104 mF) A) and B)
G) B) and E)

Question 3

Which of the following is an extensive property?

Accepted Answer

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

Question 4

The rusting of a piece of iron under environmental conditions is a physical change.

Accepted Answer

A) True 
 B)False

Question 5

A laboratory technician analyzed a sample three times for percent iron and got the following results: 22.43% Fe,24.98% Fe,and 21.02% Fe.The actual percent iron in the sample was 22.81%.The analyst's

Accepted Answer

A)  precision was poor but the average result was accurate.
B)  accuracy was poor but the precision was good.
C)  work was only qualitative.
D)  work was precise.E) A) and D)
F) B) and C)

Question 6

An average Mastiff puppy weighs 2.72 kilograms.How many pounds is an average Mastiff puppy? (1lb = 453.6 g)

Accepted Answer

A)  1.24 lb
B)  10.0 lb
C)  59.8 lb
D)  6.00 lb
E)  72.0 lbF) A) and D)
G) A) and B)

Question 7

Which is correct if 0.01234 is rewritten in scientific notation?

Accepted Answer

A)  1.234 × 10-3
B)  12.3 × 104
C)  1 × 10-1
D)  1.234 × 102
E)  1.234 × 10-2F) A) and E)
G) B) and C)

Question 8

___________ tells how closely multiple measurements of the same thing are to one another.

Accepted Answer

The answer of ___________ tells how closely multiple measurements of...

Question 9

Acetone,which is used as a solvent and as a reactant in the manufacture of Plexiglas,boils at 56.1°C.What is the boiling point in degrees Fahrenheit?

Accepted Answer

A)  159°F
B)  133°F
C)  101°F
D)  69.0°F
E)  43.4°FF) A) and B)
G) C) and D)

Question 10

Explain the difference between a physical property and a chemical property.

Accepted Answer

A physical property can be obs...

Question 11

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water.When the same flask is filled with concentrated sulfuric acid,H2SO4,its mass is 1026.57 g.What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)

Accepted Answer

A)  1.992 g/cm3
B)  1.840 g/cm3
C)  1.729 g/cm3
D)  1.598 g/cm3
E)  0.543 g/cm3F) None of the above
G) B) and E) B

Question 12

Which is correct if 52.068881 is rewritten in scientific notation and 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) C) and D)
G) B) and C)

Question 13

The SI prefixes milli- and mega- represent,respectively

Accepted Answer

A)  106 and 10-6
B)  10-3 and 106
C)  103 and 10-6
D)  10-3 and 109
E)  10-6 and 10-3 .F) All of the above
G) A) and E)

Question 14

Isopropyl alcohol,commonly known as rubbing alcohol,boils at 82.4°C.What is the boiling point in kelvins?

Accepted Answer

A)  387.6 K
B)  355.6 K
C)  323.6 K
D)  190.8 K
E)  -190.8 KF) None of the above
G) B) and D)

Question 15

A(n)_______________ ____________ has a uniform composition throughout.

Accepted Answer

The answer of A(n)_______________ ____________ has a uniform composition throughout....

Question 16

____________ tells how close a measurement is to the true value.

Accepted Answer

The answer of ____________ tells how close a measurement is...

Question 17

How many cubic inches are in 1.00 liter? (1 in = 2.54 cm)

Accepted Answer

A)  61.0 in3
B)  155 in3
C)  394 in3
D)  1.64 × 104 in3
E)  none of themF) B) and C)
G) D) and E)

Question 18

If normal body temperature is 98.6°F then what is this in degrees Celsius?

Accepted Answer

A)  34°C
B)  35.5°C
C)  36.4°C
D)  37.0°C
E)  38.7°CF) A) and C)
G) A) and B) D

Question 19

The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?

Accepted Answer

A)  -127°F
B)  -289°F
C)  -321°F
D)  177°F
E)  662°FF) A) and E)
G) A) and C)

Question 20

The city of Los Angeles is now approximately 2400 miles south of Anchorage,Alaska.It is moving slowly northward as the San Andreas fault slides along.If Los Angeles is to arrive near Anchorage in 76 million years,at what average rate will it have to move in mm per month? (1 mi = 1609 m)

Accepted Answer

A)  2.0 × 10-10 mm/mo.
B)  6.6 × 10-6 mm/mo.
C)  4.2 mm/mo.
D)  9.5 mm/mo.
E)  51 mm/mo.F) B) and E)
G) C) and D)

Exam 1: Chemistry: the Central Science

The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?

Correct Answer
verified
C

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in meters.(1 mi = 1609 m)

Correct Answer
verified

Which of the following is an extensive property?

Correct Answer
verified

The rusting of a piece of iron under environmental conditions is a physical change.

Correct Answer
verified

A laboratory technician analyzed a sample three times for percent iron and got the following results: 22.43% Fe,24.98% Fe,and 21.02% Fe.The actual percent iron in the sample was 22.81%.The analyst's

Correct Answer
verified

An average Mastiff puppy weighs 2.72 kilograms.How many pounds is an average Mastiff puppy? (1lb = 453.6 g)

Correct Answer
verified

Which is correct if 0.01234 is rewritten in scientific notation?

Correct Answer
verified

___________ tells how closely multiple measurements of the same thing are to one another.

Correct Answer
verified

Acetone,which is used as a solvent and as a reactant in the manufacture of Plexiglas,boils at 56.1°C.What is the boiling point in degrees Fahrenheit?

Correct Answer
verified

Explain the difference between a physical property and a chemical property.

Correct Answer
verified
A physical property can be obs...
View Answer

Correct Answer
verified
B

Which is correct if 52.068881 is rewritten in scientific notation and rounded to three significant figures?

Correct Answer
verified

The SI prefixes milli- and mega- represent,respectively

Correct Answer
verified

Isopropyl alcohol,commonly known as rubbing alcohol,boils at 82.4°C.What is the boiling point in kelvins?

Correct Answer
verified

A(n)___ has a uniform composition throughout.

Correct Answer
verified

____________ tells how close a measurement is to the true value.

Correct Answer
verified

How many cubic inches are in 1.00 liter? (1 in = 2.54 cm)

Correct Answer
verified

If normal body temperature is 98.6°F then what is this in degrees Celsius?

Correct Answer
verified
D

The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?

Correct Answer
verified

The city of Los Angeles is now approximately 2400 miles south of Anchorage,Alaska.It is moving slowly northward as the San Andreas fault slides along.If Los Angeles is to arrive near Anchorage in 76 million years,at what average rate will it have to move in mm per month? (1 mi = 1609 m)

Correct Answer
verified

Exam 1: Chemistry: the Central Science

The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?

Correct AnswerverifiedC

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in meters.(1 mi = 1609 m)

Correct AnswerverifiedShow Answer

Which of the following is an extensive property?

Correct AnswerverifiedShow Answer

The rusting of a piece of iron under environmental conditions is a physical change.

Correct AnswerverifiedShow Answer

A laboratory technician analyzed a sample three times for percent iron and got the following results: 22.43% Fe,24.98% Fe,and 21.02% Fe.The actual percent iron in the sample was 22.81%.The analyst's

Correct AnswerverifiedShow Answer

An average Mastiff puppy weighs 2.72 kilograms.How many pounds is an average Mastiff puppy? (1lb = 453.6 g)

Correct AnswerverifiedShow Answer

Which is correct if 0.01234 is rewritten in scientific notation?

Correct AnswerverifiedShow Answer

___________ tells how closely multiple measurements of the same thing are to one another.

Correct AnswerverifiedShow Answer

Acetone,which is used as a solvent and as a reactant in the manufacture of Plexiglas,boils at 56.1°C.What is the boiling point in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

Explain the difference between a physical property and a chemical property.

Correct AnswerverifiedA physical property can be obs...View AnswerShow Answer

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water.When the same flask is filled with concentrated sulfuric acid,H2SO4,its mass is 1026.57 g.What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)

Correct AnswerverifiedB

Which is correct if 52.068881 is rewritten in scientific notation and rounded to three significant figures?

Correct AnswerverifiedShow Answer

The SI prefixes milli- and mega- represent,respectively

Correct AnswerverifiedShow Answer

Isopropyl alcohol,commonly known as rubbing alcohol,boils at 82.4°C.What is the boiling point in kelvins?

Correct AnswerverifiedShow Answer

A(n)_______________ ____________ has a uniform composition throughout.

Correct AnswerverifiedShow Answer

____________ tells how close a measurement is to the true value.

Correct AnswerverifiedShow Answer

How many cubic inches are in 1.00 liter? (1 in = 2.54 cm)

Correct AnswerverifiedShow Answer

If normal body temperature is 98.6°F then what is this in degrees Celsius?

Correct AnswerverifiedD

The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

The city of Los Angeles is now approximately 2400 miles south of Anchorage,Alaska.It is moving slowly northward as the San Andreas fault slides along.If Los Angeles is to arrive near Anchorage in 76 million years,at what average rate will it have to move in mm per month? (1 mi = 1609 m)

Correct AnswerverifiedShow Answer

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A physical property can be obs...
View Answer

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A(n)___ has a uniform composition throughout.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified