Question 1

In which of the following cases is the given measurement correctly rounded to three significant figures?

Accepted Answer

A)  479,000 becomes 479 
B)  0.02235 becomes 0.0223 
C)  37.98 becomes 38.0 
D)  49.400 becomes 49,400 
A)  479,000 becomes 479 
B)  0.02235 becomes 0.0223 
C)  37.98 becomes 38.0 
D)  49.400 becomes 49,400

Question 2

In which one of the following measure numbers are all of the zeros significant?

Accepted Answer

A)  0.0705 
B)  3,300,000 
C)  0.000440 
D)  3.945900 
A)  0.0705 
B)  3,300,000 
C)  0.000440 
D)  3.945900

Question 3

If object A weighs 6.0 grams and has a volume of 3.0 mL and object B weighs 9.0 grams and has a volume of 2.25 mL

Accepted Answer

A)  B is less dense than A. 
B)  A and B have equal densities. 
C)  B is twice as dense as A. 
D)  B is four times as dense as A. 
A)  B is less dense than A. 
B)  A and B have equal densities. 
C)  B is twice as dense as A. 
D)  B is four times as dense as A.

Question 4

Statements: (1) In outer space, an astronaut may be weightless but never massless.
(2) The metric system prefixes milli and micro differ in mathematical meaning by a factor of 1000.
(3) The addition of 273 to a Fahrenheit temperature reading will convert it to a Kelvin temperature reading.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 5

Statements: (1) A deciliter is equal to 100 milliliters.
(2) The Kelvin temperature scale is closely related mathematically to the Celsius temperature scale.
(3) Measurements cannot be exact because two estimated digits are always recorded as part of any measurement.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 6

Which of the following conversion factors would limit a calculation to two significant figures?

Accepted Answer

A)    
B)    
C)    
D)  more than one correct response 
E)  no correct response 
A)    
B)    
C)    
D)  more than one correct response 
E)  no correct response

Question 7

In which of the following sequences of measured numbers do all members of the sequence contain three significant figures?

Accepted Answer

A)  3.03 and 3.30 and 0.033 
B)  78,000 and 0.00780 and 780 
C)  30.0 and 0.300 and 30,100 
D)  more than one correct response 
E)  no correct response 
A)  3.03 and 3.30 and 0.033 
B)  78,000 and 0.00780 and 780 
C)  30.0 and 0.300 and 30,100 
D)  more than one correct response 
E)  no correct response

Question 8

Which of the following statements concerning conversion factors is incorrect?

Accepted Answer

A)  English-to-English conversion factors come from defined relationships 
B)  Metric-to-metric conversions come from measured relationships 
C)  English-to-English conversion factors always contain exact numbers 
D)  more than one correct response 
E)  no correct response 
A)  English-to-English conversion factors come from defined relationships 
B)  Metric-to-metric conversions come from measured relationships 
C)  English-to-English conversion factors always contain exact numbers 
D)  more than one correct response 
E)  no correct response

Question 9

The density of table sugar is 1.59 g/mL. It is true that

Accepted Answer

A)  2.00 g of table sugar occupies a volume of 1.17 mL. 
B)  3.00 g of table sugar occupies a volume of 1.97 mL. 
C)  5.00 g of table sugar occupies a volume of 3.14 mL. 
D)  More than one correct response 
E)  No correct response 
A)  2.00 g of table sugar occupies a volume of 1.17 mL. 
B)  3.00 g of table sugar occupies a volume of 1.97 mL. 
C)  5.00 g of table sugar occupies a volume of 3.14 mL. 
D)  More than one correct response 
E)  No correct response

Question 10

Statements: 
(1) The size of the degree is the same on the Fahrenheit and Celsius temperature scales.
(2) The measurement 62,300 has an uncertainty of F1F1F1S1F1F1F10 100.
(3) The answer to the calculation 8.45 + 10.40 should contain four significant figures.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 11

Which of the following measured numbers has an uncertainty of 0.01 associated with it?

Accepted Answer

A)  32.930 
B)  3.02 F1F1F1S1F1F1F10 106 
C)  3.0 F1F1F1S1F1F1F10 10-1 
D)  more than one correct response 
E)  no correct response 
A)  32.930 
B)  3.02 F1F1F1S1F1F1F10 106 
C)  3.0 F1F1F1S1F1F1F10 10-1 
D)  more than one correct response 
E)  no correct response

Question 12

Statements: (1) The measured numbers 244,000 and 0.000244 contain the same number of significant figures.
(2) One cubic centimeter is equal to ten milliliters.
(3) The conversion factor 1 in/2.54 cm, when used as written, would decrease unit size.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 13

Which of the following is an incorrect pairing of terminology?

Accepted Answer

A)  kilogram - metric unit of mass 
B)  milliliter - metric unit of volume 
C)  meter - metric unit of length 
D)  cubic centimeter - metric unit of length 
A)  kilogram - metric unit of mass 
B)  milliliter - metric unit of volume 
C)  meter - metric unit of length 
D)  cubic centimeter - metric unit of length

Question 14

Which of the following mathematical expressions is correctly evaluated?

Accepted Answer

A)    
B)  103 F1F1F1S1F1F1F10 104 = 1012 
C)    
D)  more than one correct response 
E)  no correct response 
A)    
B)  103 F1F1F1S1F1F1F10 104 = 1012 
C)    
D)  more than one correct response 
E)  no correct response

Question 15

Which of the following comparisons of the size of a degree on the major temperature scales is correct?

Accepted Answer

A)  A Kelvin degree is larger than a Celsius degree. 
B)  A Fahrenheit degree and a Celsius degree are equal in size. 
C)  A Fahrenheit degree is larger than a Kelvin degree. 
D)  A Celsius degree and a Kelvin degree are equal in size. 
A)  A Kelvin degree is larger than a Celsius degree. 
B)  A Fahrenheit degree and a Celsius degree are equal in size. 
C)  A Fahrenheit degree is larger than a Kelvin degree. 
D)  A Celsius degree and a Kelvin degree are equal in size.

Question 16

If the temperature of an object is 435 oC, what is the temperature on a Kelvin scale?

Accepted Answer

A)  162 K 
B)  608 K 
C)  672 K 
D)  708 K 
A)  162 K 
B)  608 K 
C)  672 K 
D)  708 K

Question 17

According to dimensional analysis, which of the following is the correct setup for the problem "How many milligrams are there in 85 kilograms?"

Accepted Answer

A)  85   
B)  85   
C)  85   
D)  85   
A)  85   
B)  85   
C)  85   
D)  85

Question 18

Density can be used as a conversion factor to convert from

Accepted Answer

A)  mass to volume 
B)  volume to mass 
C)  metric unit mass to English unit mass 
D)  more than one correct response 
E)  no correct response 
A)  mass to volume 
B)  volume to mass 
C)  metric unit mass to English unit mass 
D)  more than one correct response 
E)  no correct response

Question 19

Statements: 
(1) The answer to the addition problem 3.21 + 32 + 3.22 should have an uncertainty of hundredths.
(2) The measurement 653,899, when rounded to five significant figures, becomes 65,390.
(3) The higher the specific heat of a substance, the more its temperature will change when it absorbs a given amount of heat.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 20

Which of the following would involve an exact number?

Accepted Answer

A)  the length of a table 
B)  the mass of a bag of carrots 
C)  the number of inches in a yard 
D)  the surface area of a quilt 
A)  the length of a table 
B)  the mass of a bag of carrots 
C)  the number of inches in a yard 
D)  the surface area of a quilt

Exam 2: Measurements in Chemistry

In which of the following cases is the given measurement correctly rounded to three significant figures?

In which one of the following measure numbers are all of the zeros significant?

If object A weighs 6.0 grams and has a volume of 3.0 mL and object B weighs 9.0 grams and has a volume of 2.25 mL

Statements: (1) In outer space, an astronaut may be weightless but never massless. (2) The metric system prefixes milli and micro differ in mathematical meaning by a factor of 1000. (3) The addition of 273 to a Fahrenheit temperature reading will convert it to a Kelvin temperature reading.

Statements: (1) A deciliter is equal to 100 milliliters. (2) The Kelvin temperature scale is closely related mathematically to the Celsius temperature scale. (3) Measurements cannot be exact because two estimated digits are always recorded as part of any measurement.

Which of the following conversion factors would limit a calculation to two significant figures?

In which of the following sequences of measured numbers do all members of the sequence contain three significant figures?

Which of the following statements concerning conversion factors is incorrect?

The density of table sugar is 1.59 g/mL. It is true that

Statements: (1) The size of the degree is the same on the Fahrenheit and Celsius temperature scales. (2) The measurement 62,300 has an uncertainty of  100. (3) The answer to the calculation 8.45 + 10.40 should contain four significant figures.

Which of the following measured numbers has an uncertainty of 0.01 associated with it?

Statements: (1) The measured numbers 244,000 and 0.000244 contain the same number of significant figures. (2) One cubic centimeter is equal to ten milliliters. (3) The conversion factor 1 in/2.54 cm, when used as written, would decrease unit size.

Which of the following is an incorrect pairing of terminology?

Which of the following mathematical expressions is correctly evaluated?

Which of the following comparisons of the size of a degree on the major temperature scales is correct?

If the temperature of an object is 435 oC, what is the temperature on a Kelvin scale?

According to dimensional analysis, which of the following is the correct setup for the problem "How many milligrams are there in 85 kilograms?"

Density can be used as a conversion factor to convert from

Which of the following would involve an exact number?

Basic Concepts About Matter

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

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