Question 1

The area of a 15-inch pizza is 176.7 in2. Express this area in square centimeters.

Accepted Answer

A)   1140. cm2
B)   448.8 cm2
C)   96.8 cm2
D)   69.57 cm2
E)   27.39 cm2F) C) and D)
G) B) and E)

Question 2

You prepare 1000. mL of tea and transfer it to a 1.00-quart pitcher for storage. Which of the following statements is true?

Accepted Answer

A)   The pitcher will be filled to 100% of its capacity with no tea spilled.
B)   The pitcher will be filled to about 95% of its capacity.
C)   The pitcher will be filled to about 50% of its capacity.
D)   The pitcher will be completely filled and a small amount of tea will overflow.
E)   The pitcher will be completely filled and most of the tea will overflow.F) A) and B)
G) A) and D) D

Question 3

Water vapor is less dense than ice because

Accepted Answer

A)   molecules in the gas phase are in constant motion.
B)   molecules in the gas phase have more potential energy than in solids.
C)   molecules in the gas phase have more kinetic energy than in solids.
D)   gaseous molecules have less mass.
E)   molecules in the gas phase have more space between them than in solids.F) A) and E)
G) A) and D)

Question 4

The difference between a student's experimental measurement of the density of sodium chloride and the known density of this compound reflects the ___________ of the student's result.

Accepted Answer

A)   accuracy
B)   precision
C)   random error
D)   systematic error
E)   indeterminate errorF) All of the above
G) C) and D)

Question 5

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm2 =

Accepted Answer

A)   105.2 g/cm3
B)   105.2 g/cm2
C)   105.2 g/cm
D)   72.13 g/cm2
E)   72.13 g/cmF) A) and B)
G) A) and C) C

Question 6

Given that 1 inch = 2.54 cm, 1 cm3 is equal to

Accepted Answer

A)   16.4 in3.
B)   6.45 in3.
C)   0.394 in3.
D)   0.155 in3.
E)   0.0610 in3.F) C) and D)
G) A) and E)

Question 7

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm3, 4.67 g/cm3, 4.69 g/cm3, and 4.81 g/cm3. Independent studies found the correct density to be 4.75 g/cm3. Which of the following statements represents the best analysis of the data?

Accepted Answer

A)   Bud's results have much greater accuracy than precision.
B)   Bud's results have much greater precision than accuracy.
C)   Bud's results have high accuracy and high precision.
D)   Bud's results have low accuracy and low precision.
E)   Bud's equipment is faulty.F) D) and E)
G) A) and D)

Question 8

Which one of the following numbers contains a digit or digits which is/are not significant?

Accepted Answer

A)   970.0
B)   502
C)   .300
D)   .0043
E)   20.01F) A) and B)
G) B) and E)

Question 9

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

Accepted Answer

A) True 
 B)False

Question 10

The joule is the SI unit of energy and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are in 1 joule.

Accepted Answer

A)   10-1 ergs
B)   10 ergs
C)   102 ergs
D)   105 ergs
E)   107 ergsF) A) and E)
G) None of the above

Question 11

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

Accepted Answer

A)   3.5 × 105 cL
B)   3.5 × 104 cL
C)   3.5 cL
D)   3.5 × 10-4 cL
E)   3.5 × 10-3 cLF) B) and D)
G) A) and D)

Question 12

Which of the following correctly shows how to convert a density of 20.1 g cm-3 to units of kg m-3?

Accepted Answer

A)   -3 to units of kg m-3? 
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C)   -3 to units of kg m-3? 
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G) A) and D)

Question 13

Which one of the following is a "substance" in the sense of the word as used in your textbook?

Accepted Answer

A)   air
B)   tap water
C)   sea water
D)   water
E)   toothpasteF) A) and C)
G) A) and D)

Question 14

Which of the following abbreviations of the given SI base unit is incorrect?

Accepted Answer

A)   second: s
B)   kilogram: kg
C)   meter: m
D)   mole: mol
E)   kelvin: kF) A) and E)
G) None of the above

Question 15

When a wooden match burns in air, chemical potential energy is converted to kinetic energy.

Accepted Answer

A) True 
 B)False

Question 16

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following processes and concepts is not a part of the "scientific method"?

Accepted Answer

A)   experiment
B)   observation
C)   model
D)   speculation
E)   lawF) All of the above
G) B) and C)

Question 18

As chief chemist at Superior Analytical Products (SAP)  you must design an experiment to determine the density of an unknown liquid to three (3)  significant figures. The density is of the order of 1 g/cm3. You have approximately 7 mL of the liquid and only graduated cylinders and balances are available for your use. Which of the following combinations of equipment will allow you to meet but not exceed your goal?

Accepted Answer

A)   graduated cylinder with ±0.1 mL uncertainty; balance with ±0.1 g uncertainty
B)   graduated cylinder with ±0.01 mL uncertainty; balance with ±0.1 g uncertainty
C)   graduated cylinder with ±0.01 mL uncertainty; balance with ±0.01 g uncertainty
D)   graduated cylinder with ±0.001 mL uncertainty; balance with ±0.001 g uncertainty
E)   graduated cylinder with ±0.1 mL uncertainty; balance with ±0.001 g uncertaintyF) A) and B)
G) None of the above

Question 19

The SI prefix mega- (M)  means

Accepted Answer

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

Question 20

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in kelvin.

Accepted Answer

A) True 
 B)False  True

Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

The area of a 15-inch pizza is 176.7 in². Express this area in square centimeters.

Correct Answer
verified

You prepare 1000. mL of tea and transfer it to a 1.00-quart pitcher for storage. Which of the following statements is true?

Correct Answer
verified
D

Water vapor is less dense than ice because

Correct Answer
verified

The difference between a student's experimental measurement of the density of sodium chloride and the known density of this compound reflects the ___________ of the student's result.

Correct Answer
verified

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm² =

Correct Answer
verified
C

Given that 1 inch = 2.54 cm, 1 cm³ is equal to

Correct Answer
verified

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm³, 4.67 g/cm³, 4.69 g/cm³, and 4.81 g/cm³. Independent studies found the correct density to be 4.75 g/cm³. Which of the following statements represents the best analysis of the data?

Correct Answer
verified

Which one of the following numbers contains a digit or digits which is/are not significant?

Correct Answer
verified

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

Correct Answer
verified

The joule is the SI unit of energy and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are in 1 joule.

Correct Answer
verified

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

Correct Answer
verified

Which of the following correctly shows how to convert a density of 20.1 g cm^-3 to units of kg m^-3?

Correct Answer
verified

Which one of the following is a "substance" in the sense of the word as used in your textbook?

Correct Answer
verified

Which of the following abbreviations of the given SI base unit is incorrect?

Correct Answer
verified

When a wooden match burns in air, chemical potential energy is converted to kinetic energy.

Correct Answer
verified

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

Correct Answer
verified

Which of the following processes and concepts is not a part of the "scientific method"?

Correct Answer
verified

Correct Answer
verified

The SI prefix mega- (M) means

Correct Answer
verified

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in kelvin.

Correct Answer
verified
True

Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

The area of a 15-inch pizza is 176.7 in2. Express this area in square centimeters.

Correct AnswerverifiedShow Answer

You prepare 1000. mL of tea and transfer it to a 1.00-quart pitcher for storage. Which of the following statements is true?

Correct AnswerverifiedD

Water vapor is less dense than ice because

Correct AnswerverifiedShow Answer

The difference between a student's experimental measurement of the density of sodium chloride and the known density of this compound reflects the ___________ of the student's result.

Correct AnswerverifiedShow Answer

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm2 =

Correct AnswerverifiedC

Given that 1 inch = 2.54 cm, 1 cm3 is equal to

Correct AnswerverifiedShow Answer

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm3, 4.67 g/cm3, 4.69 g/cm3, and 4.81 g/cm3. Independent studies found the correct density to be 4.75 g/cm3. Which of the following statements represents the best analysis of the data?

Correct AnswerverifiedShow Answer

Which one of the following numbers contains a digit or digits which is/are not significant?

Correct AnswerverifiedShow Answer

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

Correct AnswerverifiedShow Answer

The joule is the SI unit of energy and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are in 1 joule.

Correct AnswerverifiedShow Answer

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

Correct AnswerverifiedShow Answer

Which of the following correctly shows how to convert a density of 20.1 g cm-3 to units of kg m-3?

Correct AnswerverifiedShow Answer

Which one of the following is a "substance" in the sense of the word as used in your textbook?

Correct AnswerverifiedShow Answer

Which of the following abbreviations of the given SI base unit is incorrect?

Correct AnswerverifiedShow Answer

When a wooden match burns in air, chemical potential energy is converted to kinetic energy.

Correct AnswerverifiedShow Answer

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

Correct AnswerverifiedShow Answer

Which of the following processes and concepts is not a part of the "scientific method"?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The SI prefix mega- (M) means

Correct AnswerverifiedShow Answer

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in kelvin.

Correct AnswerverifiedTrue

The area of a 15-inch pizza is 176.7 in². Express this area in square centimeters.

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
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Correct Answer
verified

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm² =

Correct Answer
verified
C

Given that 1 inch = 2.54 cm, 1 cm³ is equal to

Correct Answer
verified

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm³, 4.67 g/cm³, 4.69 g/cm³, and 4.81 g/cm³. Independent studies found the correct density to be 4.75 g/cm³. Which of the following statements represents the best analysis of the data?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The joule is the SI unit of energy and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are in 1 joule.

Correct Answer
verified

Correct Answer
verified

Which of the following correctly shows how to convert a density of 20.1 g cm^-3 to units of kg m^-3?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified
True