CHEM121 FINAL EXAM QUESTIONS
AND COMPLETE SOLUTIONS
Which of the following would be a good example of a
hypothesis in the scientific method process?
a researcher considers that the more sunlight a green
plant receives, the larger the plant will grow
Which of the following would be good tools for
making scientific observations during a chemical
reaction?
thermometer, your eyes, clock
Precision is defined as how _____ the measured
values are to one another
reproducible
Which of the following is an example of applied
research?
a researcher tries to study the effect of a new drug on HIV-
inhibition.
Which of the following would be considered a physical
change?
boiling water
Which of the following is an example of a chemical
property?
carbon monoxide is poisonous
List the basic steps of the scientific method process
in the order they must be carried out.
observation, hypothesis, prediction, experimentation, and
conclusion
Convert 18.50 ft to the SI unit for length.
, 5.639 m
How many grams of iron are in 350 mg of iron?
0.350 grams
Once a hypothesis has been established, it can be
tested by conducting an _____.
experiment
The scientific method involves various techniques
which allow researchers to investigate scientific
questions through _____ and _____.
observations and experimentation
Which of the following would be a good tool for
making scientific observations after isolating a solid
product from a chemical reaction?
balance
How many significant figures are in 0.0000401 kg?
3
What can be used to measure the mass of an object?
balance
It is important that scientists use units that are
understood on a global level. These units are referred
to as SI units which stands for _____?
international system of units
Which of the following is not a part of the scientific
method process?
discussion
Express 1.40 x 10^-3 L in decimal notation.
0.00140 L
The prefix milli- in the metric system represents a
factor of _____?
10^-3
What is the base unit for mass in the metric system?
AND COMPLETE SOLUTIONS
Which of the following would be a good example of a
hypothesis in the scientific method process?
a researcher considers that the more sunlight a green
plant receives, the larger the plant will grow
Which of the following would be good tools for
making scientific observations during a chemical
reaction?
thermometer, your eyes, clock
Precision is defined as how _____ the measured
values are to one another
reproducible
Which of the following is an example of applied
research?
a researcher tries to study the effect of a new drug on HIV-
inhibition.
Which of the following would be considered a physical
change?
boiling water
Which of the following is an example of a chemical
property?
carbon monoxide is poisonous
List the basic steps of the scientific method process
in the order they must be carried out.
observation, hypothesis, prediction, experimentation, and
conclusion
Convert 18.50 ft to the SI unit for length.
, 5.639 m
How many grams of iron are in 350 mg of iron?
0.350 grams
Once a hypothesis has been established, it can be
tested by conducting an _____.
experiment
The scientific method involves various techniques
which allow researchers to investigate scientific
questions through _____ and _____.
observations and experimentation
Which of the following would be a good tool for
making scientific observations after isolating a solid
product from a chemical reaction?
balance
How many significant figures are in 0.0000401 kg?
3
What can be used to measure the mass of an object?
balance
It is important that scientists use units that are
understood on a global level. These units are referred
to as SI units which stands for _____?
international system of units
Which of the following is not a part of the scientific
method process?
discussion
Express 1.40 x 10^-3 L in decimal notation.
0.00140 L
The prefix milli- in the metric system represents a
factor of _____?
10^-3
What is the base unit for mass in the metric system?
