Introduction to Chemistry
Practice Test
1.
What is the measurement of matter whose value depends on the force of gravity?
a.
weight
b.
volume
c.
. mass
d.
energy
2.
Chemists whose specialty is determining the composition of chemicals work in the field of ________.
a.
inorganic chemistry
b.
analytical chemistry
c.
physical chemistry
d.
organic chemistry
3.
When an explanation has been supported by many experiments, the explanation is a __________.
a.
hypothesis
b.
theory
c.
law
d.
model
4.
What would you expect to result from a decrease in the amount of ozone in the stratosphere?
a.
decrease in the amount of oxygen in the troposphere
b.
increase in the number of individual oxygen particles
c.
decrease in the number of individual oxygen particles
d.
increase in the amount of oxygen in the troposphere
5.
A judgment based upon the results of an experiment is a _____________.
a.
conclusion
b.
hypothesis
c.
theory
d.
variable
6.
Anything that has mass and takes up space is _________.
a.
pressure
b.
weight
c.
matter
d.
volume
7.
A tentative explanation for a series of observations is a __________.
a.
theory
b.
model
c.
hypothesis
d.
law
8.
A chlorofluorocarbon is a chemical that is made of _____________.
a.
chlorine, fluorine, and carbon
b.
carbon and hydrogen
c.
chloron, fluoron, and carbon
d.
carbon and oxygen
9.
Chemists who study the chemistry of living organisms work in the field of ______________.
a.
organic chemistry
b.
analytical chemistry
c.
biochemistry
d.
physical chemistry
10.
Why can an object's weight vary with location but its mass cannot?
a.
Systems of measurement vary with location.
b.
Weight is a measure of both mass and the effect of Earth's gravitational pull on the matter. Mass measures only the amount of matter.
c.
Mass is a measure of the amount of matter in an object; weight is not.
d.
Determinations of mass account for varying gravitational pulls in different locations.
11.
What branch of chemistry is most concerned with the study of carbon compounds?
a.
physical chemistry
b.
analytical chemistry
c.
inorganic chemistry
d.
organic chemistry
12.
Ozone is found in the _____________________.
a.
ionosphere
b.
mesosphere
c.
troposphere
d.
stratosphere
13.
The general term for a systematic approach used in scientific study is _______________.
a.
the scientific controversy
b.
quantitative analysis
c.
the scientific method
d.
qualitative analysis
14.
A hypothesis is more likely to become a __________ because __________.
a.
theory, fewer experiments are needed in order to support it
b.
scientific law; theories are conclusions reached by many scientists about relationships in nature
c.
scientific law; fewer trials are needed during the experimental phase
d.
theory, scientific laws are conclusions reached by many scientists about relationships in nature
15.
The study of Earth’s atmospheric ozone and the effect of chlorofluorocarbons on ozone is an example of _____________.
a.
applied research
b.
theoretical research
c.
technology
d.
basic research
16.
Which of the following releases matter?
a.
picking up iron filings with a magnet
b.
turbines spinning in a power plant
c.
turning on an electric hot plate
d.
engaging a car exhaust system
17.
What is the name given to a set of controlled observations that test a proposed explanation?
a.
conclusion
b.
hypothesis
c.
theory
d.
experiment
18.
A ________ can be used to help visualize microscopic structures and events.
a.
model
b.
theory
c.
hypothesis
d.
variable
