Question 1

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

Accepted Answer

A)   269.01860 cm
B)   269.0186 cm
C)   269.019 cm
D)   269.02 cm
E)   269.0 cmF) A) and E)
G) D) and E)

Question 2

The ripening of fruit, once picked, is an example of physical change.

Accepted Answer

A) True 
 B)False

Question 3

A large pizza has a diameter of 15 inches. Express this diameter in centimeters.

Accepted Answer

A)   38 cm
B)   24 cm
C)   18 cm
D)   9.3 cm
E)   5.9 cmF) C) and D)
G) C) and E)

Question 4

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 B)
G) A) and E)

Question 5

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) C) and D)
G) A) and E)

Question 6

The appropriate number of significant figures in the result of 15.234 - 15.208 is

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   4.
E)   5.F) B) and C)
G) B) and E)

Question 7

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

Accepted Answer

A)   theory.
B)   hypothesis.
C)   law.
D)   fact.
E)   postulate.F) A) and E)
G) A) and C)

Question 8

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) All of the above
G) A) and E)

Question 9

In each of the sets below, choose the one quantity or number which is exact.
a. i. the human population
    ii. the distance in light years from the sun to Alpha Centauri, a nearby star
    iii. the winning time for the 100 m dash in the Olympic Games
b. i. the weight of a particular one cent coin in g
    ii. the boiling point of lead, in °C
    iii. the number of cm in 1 yd
c. i. the measured value of the speed of light (2.998... × 108 m/s)
    ii. F1F1F1S1F1F1F10 (3.141...)
    iii. the volume of milk in a 1-gallon jug

Accepted Answer

Question 10

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) A) and D)
G) C) and E)

Question 11

Select the best statement about chemistry before 1800.

Accepted Answer

A)   Alchemy focused on objective experimentation rather than mystical explanations of processes.
B)   The phlogiston theory laid a valuable theoretical basis for modern chemistry.
C)   Lavoisier's quantitative work on the role of oxygen in combustion was the beginning of modern chemistry.
D)   The interpretation of data by alchemists was not biased by their overall view of life.
E)   Alchemists failed because they did not develop any practical chemical methods.F) A) and E)
G) A) and D)

Question 12

Which of the following correctly expresses 0.000007913 g in scientific notation?

Accepted Answer

A)   7.913 × 106 g
B)   7.913 × 105 g
C)   7.913 × 10-5 g
D)   7.913 × 10-6 g
E)   7.913 × 10-9 gF) B) and D)
G) C) and D)

Question 13

During the swing of a frictionless pendulum, what energy form(s)  remain constant?

Accepted Answer

A)   kinetic energy only
B)   potential energy only
C)   both kinetic energy and potential energy
D)   kinetic plus potential energy
E)   None of the above forms remains constant.F) A) and E)
G) A) and B)

Question 14

Which of the following represents the largest volume?

Accepted Answer

A)   10,000 L
B)   1000 pL
C)   100 mL
D)   10 nL
E)   10 cm3F) All of the above
G) A) and B)

Question 15

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 B)
G) None of the above

Question 16

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

Question 17

When applying the scientific method, a model or theory should be based on experimental data.

Accepted Answer

A) True 
 B)False

Question 18

A scientist made careful measurements of the pressure and temperature of many different gases. Based on these measurements, he concluded that "the pressure of a fixed amount of gas, measured at constant volume, is directly proportional to its absolute temperature." This statement is best described as a

Accepted Answer

A)   theory.
B)   hypothesis.
C)   law.
D)   experiment.
E)   definition.F) A) and B)
G) C) and E)

Question 19

Calculate (to three significant figures) the numerical part of the conversion factors needed to carry out the following unit conversions:
a. density in g/cm3 to kg/m3
b. speed in mi/h to ft/s
c. area in km2 to mi2
d. area in km2 to cm2
e. mass/area of aluminum foil in mg/cm2 to g/m2
f. number of gas molecules per unit volume from /m3 to /ft3
g. number of bacteria per unit area on a microscope slide from /mm2 to /in2

Accepted Answer

a. 10³ (exactly)
b. 1...

Question 20

Which of the following activities is not a part of good science?

Accepted Answer

A)   proposing a theory
B)   developing a hypothesis
C)   making quantitative observations
D)   designing experiments
E)   indulging in speculationF) A) and D)
G) A) and C)

Exam 1: Keys to the Study of Chemistry

Correct Answer
verified

The appropriate number of significant figures in the result of 15.234 - 15.208 is

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

Which of the following activities is not a part of good science?

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

Correct Answer
verified

Select the best statement about chemistry before 1800.

Correct Answer
verified

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

Correct Answer
verified

The ripening of fruit, once picked, is an example of physical change.

Correct Answer
verified

Which of the following correctly expresses 0.000007913 g in scientific notation?

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

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

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

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

Correct Answer
verified

During the swing of a frictionless pendulum, what energy form(s) remain constant?

Correct Answer
verified

Correct Answer
verified
a. 10³ (exactly)
b. 1...
View Answer

When applying the scientific method, a model or theory should be based on experimental data.

Correct Answer
verified

A large pizza has a diameter of 15 inches. Express this diameter in centimeters.

Correct Answer
verified

Correct Answer
verified

Which of the following represents the largest volume?

Correct Answer
verified

Exam 1: Keys to the Study of Chemistry

Correct AnswerverifiedShow Answer

The appropriate number of significant figures in the result of 15.234 - 15.208 is

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

Which of the following activities is not a part of good science?

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

Correct AnswerverifiedShow Answer

Select the best statement about chemistry before 1800.

Correct AnswerverifiedShow Answer

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

Correct AnswerverifiedShow Answer

The ripening of fruit, once picked, is an example of physical change.

Correct AnswerverifiedShow Answer

Which of the following correctly expresses 0.000007913 g in scientific notation?

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 AnswerverifiedShow Answer

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

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 AnswerverifiedShow Answer

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

Correct AnswerverifiedShow Answer

During the swing of a frictionless pendulum, what energy form(s) remain constant?

Correct AnswerverifiedShow Answer

Correct Answerverifieda. 103 (exactly)b. 1...View AnswerShow Answer

When applying the scientific method, a model or theory should be based on experimental data.

Correct AnswerverifiedShow Answer

A large pizza has a diameter of 15 inches. Express this diameter in centimeters.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following represents the largest volume?

Correct AnswerverifiedShow Answer

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

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
a. 10³ (exactly)
b. 1...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified