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Test Bank for Foundations of College Chemistry, 15e Morris Susan, Arena Willard (All Chapters) 1 / 4
1
Package Title: Hein Test Bank
Course Title: Hein 15e
Chapter Number: 1
Question type: Multiple Choice
1) Why study chemistry?
- to help inform us about our world
- to be better able to make informed decisions
- to help us learn a technique for identifying and solving problems
- all of these choices
Answer: D
Difficulty: easy
Learning Objective 1: State the definition of chemistry and why the study of chemistry is important.
Section Reference 1: Section 1.1
2) The science of chemistry may involve:
- observation
- hypothesis development
- experimentation
- all of these choices
Answer: D
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
3) Which is an observation?
a) Atoms consist of protons, neutrons, and electrons.
b) All matter is composed of atoms.
c) Water is colorless.
d) Atoms can form chemical bonds by sharing electrons.
Answer: C 2 / 4
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Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
4) A tentative explanation of certain facts that provides the basis for further experimentation is a(n) ___.
- observation
- hypothesis
- theory
- law
Answer: B
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
5) A well established hypothesis is often called a(n) ___.
- observation
- fact
- theory
- law
Answer: C
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
6) Which is an observation?
a) Water boils at 100
o C.
b) The specific heat of water is 4.184 J/g
o C.
c) Water is a universal solvent.
d) All of the Above
Answer: D
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method. 3 / 4
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Section Reference 1: Section 1.2
7) Which of the following is a “pure” substance?
- tap water
- trail mix
- sea water
d) De-ionized water
Answer: D
Difficulty: easy
Learning Objective 1: Distinguish among a pure substance, a homogeneous mixture, and a heterogeneous mixture.
Section Reference 1: 1.4
8) Which is a scientific observation?
a) Freezing and boiling are called physical changes.
b) Water freezes at 0 °C.
c) If a substance has a density of 1.00 g/mL it must be water.
d) When a substance freezes its molecules lose potential energy.
Answer: B
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
9) The statement, “An apple a day keeps the doctor away”, is best described as a(n) ___.
- observation
- law
- theory
- hypothesis
Answer: D
Difficulty: easy
Learning Objective 1: Describe the steps involved in the scientific method.
Section Reference 1: Section 1.2
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