,Chapter 1: Chemical Foundations
1) Which of the following is an example of a quantitative observation?
A) The piece of metal is longer than the piece of wood.
B) Solution 1 is much darker than solution 2.
C) The liquid in beaker A is blue.
D) The temperature of the liquid is 60°C.
E) At least two of the above (A-D) are quantitative observations.
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
2) A quantitative observation
A) contains a number and a unit
B) does not contain a number
C) always makes a comparison
D) must be obtained through experimentation
E) is none of these
ANS: A DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
3) Generally, observed behavior that can be formulated into a statement,
sometimesmathematical in nature, is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
4) The statement “The total mass of materials is not affected by a chemical change in
thosematerials” is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
5) A chemical theory that has been known for a long time becomes a law.
, ANS: F DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
6) Which of the following metric relationships is incorrect?
A) 1 microliter = 10–6 liters
B) 1 gram = 103 kilograms
C) 103 milliliters = 1 liter
D) 1 gram = 102 centigrams
E) 10 decimeters = 1 meter
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Quantitative
7) For which pair is the SI prefix not matched correctly with its meaning?
A)
B)
C)
D)
E)
ANS: C DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
8) A metric unit for length is
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS: D DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
9) Which of the following is not a unit in the SI system?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
10) Order the four metric prefixes from smallest to largest.
, A) nano- < milli- < centi- < kilo-
B) milli- < nano- < centi- < kilo-
C) kilo- < centi- < nano- < milli-
D) kilo- < centi- < milli- < nano-
E) centi- < nano- < kilo- < milli-
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
11) 8.1 kilogram(s) contains this many grams.
A) 8.1 102
B) 8.1 103
C) 81
D) 0.81
E) 8.1 10 3
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | mass
MSC: Conceptual
12) Convert 0.3980 m to mm.
A)
B)
C)
D)
E)
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
13) 6.1 seconds contain this many picoseconds.
A) 6.1 1012
B) 6.1 10 12
C) 6.1 10 9
D) 6.1 109
E) 6.1 1015
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
14) 9.49 seconds contain this many nanoseconds.
A) 9.49 107
B) 9.49 109
C) 9.49 1012
D) 9.49 1010
E) 9.49 108
, ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
15) The distance of 21 km equals
A) m
B) m
C) m
D) m
E) m
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
16) What is the measure of resistance an object has to a change in its state of motion?
A) mass
B) weight
C) volume
D) length
E) none of these
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
17) The degree of agreement among several measurements of the same quantity is called
. It reflects the reproducibility of a given type of measurement.
A) accuracy
B) error
C) precision
D) significance
E) certainty
ANS: C DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
18) As part of the calibration of a new laboratory balance, a 1.000-g mass is weighed with
thefollowing results:
Trial Mass
1 1.201 0.001
2 1.202 0.001
3 1.200 0.001
The balance is:
A) Both accurate and precise.
B) Accurate but imprecise.
C) Precise but inaccurate.
D) Both inaccurate and imprecise.
E) Accuracy and precision are impossible to determine with the available information.
1) Which of the following is an example of a quantitative observation?
A) The piece of metal is longer than the piece of wood.
B) Solution 1 is much darker than solution 2.
C) The liquid in beaker A is blue.
D) The temperature of the liquid is 60°C.
E) At least two of the above (A-D) are quantitative observations.
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
2) A quantitative observation
A) contains a number and a unit
B) does not contain a number
C) always makes a comparison
D) must be obtained through experimentation
E) is none of these
ANS: A DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
3) Generally, observed behavior that can be formulated into a statement,
sometimesmathematical in nature, is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
4) The statement “The total mass of materials is not affected by a chemical change in
thosematerials” is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
5) A chemical theory that has been known for a long time becomes a law.
, ANS: F DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
6) Which of the following metric relationships is incorrect?
A) 1 microliter = 10–6 liters
B) 1 gram = 103 kilograms
C) 103 milliliters = 1 liter
D) 1 gram = 102 centigrams
E) 10 decimeters = 1 meter
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Quantitative
7) For which pair is the SI prefix not matched correctly with its meaning?
A)
B)
C)
D)
E)
ANS: C DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
8) A metric unit for length is
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS: D DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
9) Which of the following is not a unit in the SI system?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
10) Order the four metric prefixes from smallest to largest.
, A) nano- < milli- < centi- < kilo-
B) milli- < nano- < centi- < kilo-
C) kilo- < centi- < nano- < milli-
D) kilo- < centi- < milli- < nano-
E) centi- < nano- < kilo- < milli-
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
11) 8.1 kilogram(s) contains this many grams.
A) 8.1 102
B) 8.1 103
C) 81
D) 0.81
E) 8.1 10 3
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | mass
MSC: Conceptual
12) Convert 0.3980 m to mm.
A)
B)
C)
D)
E)
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
13) 6.1 seconds contain this many picoseconds.
A) 6.1 1012
B) 6.1 10 12
C) 6.1 10 9
D) 6.1 109
E) 6.1 1015
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
14) 9.49 seconds contain this many nanoseconds.
A) 9.49 107
B) 9.49 109
C) 9.49 1012
D) 9.49 1010
E) 9.49 108
, ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
15) The distance of 21 km equals
A) m
B) m
C) m
D) m
E) m
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit |
prefixesMSC: Conceptual
16) What is the measure of resistance an object has to a change in its state of motion?
A) mass
B) weight
C) volume
D) length
E) none of these
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
17) The degree of agreement among several measurements of the same quantity is called
. It reflects the reproducibility of a given type of measurement.
A) accuracy
B) error
C) precision
D) significance
E) certainty
ANS: C DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
18) As part of the calibration of a new laboratory balance, a 1.000-g mass is weighed with
thefollowing results:
Trial Mass
1 1.201 0.001
2 1.202 0.001
3 1.200 0.001
The balance is:
A) Both accurate and precise.
B) Accurate but imprecise.
C) Precise but inaccurate.
D) Both inaccurate and imprecise.
E) Accuracy and precision are impossible to determine with the available information.