ZUMDAHL CHEMISTRY 9TH EDITION TEST BANK ALL CHAPTERS COVERED QUESTIONS AND ANSWERS |GRADED A+| |LATEST UPDATE| |2025|

Test bank
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Sincerely,
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, Chapter 1: Chemical Foundations
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1. Which of the following is an example of a quantitative observation?
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A) The piece of metal is longer than the piece of wood.
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B) Solution 1 is much darker than solution 2. ss ss ss ss ss ss ss




C) The liquid in beaker A is blue. ss ss ss ss ss ss




D) The temperature of the liquid is 60°C.
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E) At least two of the above (A-D) are quantitative
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ss observations.

ANS: s s s s D DIF: Easy REF: 1.2
KEY: s s Chemistry | general chemistry | general concepts | scientific ss ss ss ss ss ss ss ss




ss method MSC: Conceptual ss s s




2. A quantitative observation
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A) contains a number and a unit ss ss ss ss ss




B) does not contain a number ss ss ss ss




C) always makes a comparison ss ss ss




D) must be obtained through ss ss ss




ss experimentation
E) is none of these ss ss ss




ANS: s s s s A DIF: Easy REF: 1.2
KEY: s s Chemistry | general chemistry | general concepts | scientific ss ss ss ss ss ss ss ss




ss method MSC: Conceptual ss s s




3. Generally, observed behavior that can be formulated into a statement,
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ss sometimes mathematical in nature, is called a(n) ss ss ss ss ss ss




A) observation
B) measuremen
t
C) theory

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, D) natural law ss




E) experiment

ANS: s s s s D DIF: Easy REF: 1.2
KEY: s s Chemistry | general chemistry | general concepts | scientific
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method MSC: Conceptual
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4. The statement “The total mass of materials is not affected by a chemical change in
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ss those materials” is called a(n)
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A) observation
B) measuremen
t
C) theory
D) natural law ss




E) experiment

ANS: s s s s D DIF: Easy REF: 1.2
KEY: s s Chemistry | general chemistry | general concepts | scientific
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method MSC: Conceptual
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5. A chemical theory that has been known for a long time becomes a law.
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