Chapter 1 The Chemical World
True/False Questions
1) Chemicals make up everything around you, including your own body.
Answer: TRUE
Diff: 1 Page Ref: 1.1
2) Chemists study the properties of substances and the particles that compose those substances.
Answer: TRUE
Diff: 1 Page Ref: 1.1
3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the
pressure is released.
Answer: TRUE
Diff: 1 Page Ref: 1.1
4) The properties of water do not depend on how the atoms are bonded together in the molecule.
Answer: FALSE
Diff: 1 Page Ref: 1.1
5) Both carbon dioxide molecules and water molecules consist of three atoms bonded together in a
straight line.
Answer: FALSE
Diff: 1 Page Ref: 1.1
6) Molecules are responsible for scattering light which causes the colors of the sunset.
Answer: TRUE
Diff: 1 Page Ref: 1.2
,7) Atoms and molecules determine how matter behaves.
Answer: TRUE
Diff: 1 Page Ref: 1.3
8) Chemistry is the science that seeks to understand what matter does by studying living
organisms.
Answer: FALSE
Diff: 1 Page Ref: 1.3
9) The scientific method emphasizes reason as the way to understand the world.
Answer: FALSE
Diff: 1 Page Ref: 1.4
10) A hypothesis can never be proven as wrong.
Answer: FALSE
Diff: 1 Page Ref: 1.4
11) A theory is always true and can never be proven as wrong.
Answer: FALSE
Diff: 1 Page Ref: 1.4
12) Theories can be tested and validated through experimentation.
Answer: TRUE
Diff: 1 Page Ref: 1.4
13) If experimental results contradict a hypothesis, the hypothesis must be either revised or
discarded.
Answer: TRUE
Diff: 1 Page Ref: 1.4
14) The Greek philosophers used observation and experimentation to understand the world.
,Answer: FALSE
Diff: 1 Page Ref: 1.4
15) A scientific law is a brief statement that summarizes past observations and predicts future
ones.
Answer: TRUE
Diff: 1 Page Ref: 1.4
16) The law of conservation of mass states, "In a chemical reaction matter can be created and
destroyed."
Answer: FALSE
Diff: 1 Page Ref: 1.4
17) Antoine Lavoisier observed that burning objects in a closed container resulted in a loss of
mass.
Answer: FALSE
Diff: 1 Page Ref: 1.4
18) A scientific theory describes the underlying reasons for observations and laws.
Answer: TRUE
Diff: 1 Page Ref: 1.4
19) The scientific method ensures that poor theories are eliminated over time and good theories
remain.
Answer: TRUE
Diff: 1 Page Ref: 1.4
20) A theory is the equivalent of an opinion.
Answer: FALSE
Diff: 1 Page Ref: 1.4
, 21) Antoine Lavoisier proposed the atomic theory.
Answer: FALSE
Diff: 1 Page Ref: 1.4
22) John Dalton proposed the atomic theory.
Answer: TRUE
Diff: 1 Page Ref: 1.4
23) The first step in acquiring scientific knowledge is often the observation or measurement of
some aspect of nature.
Answer: TRUE
Diff: 1 Page Ref: 1.4
True/False Questions
1) Chemicals make up everything around you, including your own body.
Answer: TRUE
Diff: 1 Page Ref: 1.1
2) Chemists study the properties of substances and the particles that compose those substances.
Answer: TRUE
Diff: 1 Page Ref: 1.1
3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the
pressure is released.
Answer: TRUE
Diff: 1 Page Ref: 1.1
4) The properties of water do not depend on how the atoms are bonded together in the molecule.
Answer: FALSE
Diff: 1 Page Ref: 1.1
5) Both carbon dioxide molecules and water molecules consist of three atoms bonded together in a
straight line.
Answer: FALSE
Diff: 1 Page Ref: 1.1
6) Molecules are responsible for scattering light which causes the colors of the sunset.
Answer: TRUE
Diff: 1 Page Ref: 1.2
,7) Atoms and molecules determine how matter behaves.
Answer: TRUE
Diff: 1 Page Ref: 1.3
8) Chemistry is the science that seeks to understand what matter does by studying living
organisms.
Answer: FALSE
Diff: 1 Page Ref: 1.3
9) The scientific method emphasizes reason as the way to understand the world.
Answer: FALSE
Diff: 1 Page Ref: 1.4
10) A hypothesis can never be proven as wrong.
Answer: FALSE
Diff: 1 Page Ref: 1.4
11) A theory is always true and can never be proven as wrong.
Answer: FALSE
Diff: 1 Page Ref: 1.4
12) Theories can be tested and validated through experimentation.
Answer: TRUE
Diff: 1 Page Ref: 1.4
13) If experimental results contradict a hypothesis, the hypothesis must be either revised or
discarded.
Answer: TRUE
Diff: 1 Page Ref: 1.4
14) The Greek philosophers used observation and experimentation to understand the world.
,Answer: FALSE
Diff: 1 Page Ref: 1.4
15) A scientific law is a brief statement that summarizes past observations and predicts future
ones.
Answer: TRUE
Diff: 1 Page Ref: 1.4
16) The law of conservation of mass states, "In a chemical reaction matter can be created and
destroyed."
Answer: FALSE
Diff: 1 Page Ref: 1.4
17) Antoine Lavoisier observed that burning objects in a closed container resulted in a loss of
mass.
Answer: FALSE
Diff: 1 Page Ref: 1.4
18) A scientific theory describes the underlying reasons for observations and laws.
Answer: TRUE
Diff: 1 Page Ref: 1.4
19) The scientific method ensures that poor theories are eliminated over time and good theories
remain.
Answer: TRUE
Diff: 1 Page Ref: 1.4
20) A theory is the equivalent of an opinion.
Answer: FALSE
Diff: 1 Page Ref: 1.4
, 21) Antoine Lavoisier proposed the atomic theory.
Answer: FALSE
Diff: 1 Page Ref: 1.4
22) John Dalton proposed the atomic theory.
Answer: TRUE
Diff: 1 Page Ref: 1.4
23) The first step in acquiring scientific knowledge is often the observation or measurement of
some aspect of nature.
Answer: TRUE
Diff: 1 Page Ref: 1.4
