CHEM 120 Exam 1 2026 | Chamberlain University | Latest
Update | Questions & Answers | Graded A+
1. The purpose of designing and carrying out a scientific experiment is to test
a...
variable
question
control
hypothesis
theory
2. What is the definition of a control in the context of scientific experiments?
A control is the variable that is changed during the experiment.
A control is something the variable is tested against.
A control is a measurement taken during the experiment.
A control is a hypothesis that is being tested.
3. Which equation is used to determine the density of a substance?
D = MV^2
D=MxV
D = M/V
D = V/M
4. Describe the process by which a covalent bond is formed between two
nonmetals.
, A covalent bond occurs when nonmetals transfer electrons to each
other.
A covalent bond forms when nonmetals collide and fuse together.
A covalent bond is formed when two nonmetals share electrons to
achieve a full outer electron shell.
A covalent bond is created through the attraction of opposite charges
between ions.
5. What is a hypothesis?
A testable prediction
An established scientific fact
A type of sample
A statistical procedure
6. Select the correct conversion factor that indicates the number of centimeters
(cm) in one inch (in).
25.4 cm/1 in
2.54 cm/1 in
100 cm/1 in
1 cm/2.54 in
7. Describe the relationship between mass, density, and volume as expressed in
the formula V = M/D.
Volume is equal to density divided by mass.
Volume is equal to mass divided by density.
Density is equal to mass divided by volume.
, Mass is equal to volume divided by density.
8. Describe the role of a variable in the context of a controlled experiment.
A variable is the idea to be tested, typically only one in a controlled
experiment.
A variable is a summary of the experiment's findings.
A variable is a fixed condition that does not change during the
experiment.
A variable is the outcome that is measured in the experiment.
9. The independent variable in an experiment is?
The participants themselves.
A measure of the participants' behavior.
An unwanted variable that may adversely affect participants'
performance.
The variable the experimenter chooses to manipulate.
10. What is a neutron?
the positively charged particle found in atomic nuclei
none of the above
negatively charged particle found in atomic nuclei
uncharged particle found in atomic nuclei
11. Which of the following statements is true regarding electrons?
electrons are negatively charged particles that orbit around the
outside of the nucleus of the atom
Update | Questions & Answers | Graded A+
1. The purpose of designing and carrying out a scientific experiment is to test
a...
variable
question
control
hypothesis
theory
2. What is the definition of a control in the context of scientific experiments?
A control is the variable that is changed during the experiment.
A control is something the variable is tested against.
A control is a measurement taken during the experiment.
A control is a hypothesis that is being tested.
3. Which equation is used to determine the density of a substance?
D = MV^2
D=MxV
D = M/V
D = V/M
4. Describe the process by which a covalent bond is formed between two
nonmetals.
, A covalent bond occurs when nonmetals transfer electrons to each
other.
A covalent bond forms when nonmetals collide and fuse together.
A covalent bond is formed when two nonmetals share electrons to
achieve a full outer electron shell.
A covalent bond is created through the attraction of opposite charges
between ions.
5. What is a hypothesis?
A testable prediction
An established scientific fact
A type of sample
A statistical procedure
6. Select the correct conversion factor that indicates the number of centimeters
(cm) in one inch (in).
25.4 cm/1 in
2.54 cm/1 in
100 cm/1 in
1 cm/2.54 in
7. Describe the relationship between mass, density, and volume as expressed in
the formula V = M/D.
Volume is equal to density divided by mass.
Volume is equal to mass divided by density.
Density is equal to mass divided by volume.
, Mass is equal to volume divided by density.
8. Describe the role of a variable in the context of a controlled experiment.
A variable is the idea to be tested, typically only one in a controlled
experiment.
A variable is a summary of the experiment's findings.
A variable is a fixed condition that does not change during the
experiment.
A variable is the outcome that is measured in the experiment.
9. The independent variable in an experiment is?
The participants themselves.
A measure of the participants' behavior.
An unwanted variable that may adversely affect participants'
performance.
The variable the experimenter chooses to manipulate.
10. What is a neutron?
the positively charged particle found in atomic nuclei
none of the above
negatively charged particle found in atomic nuclei
uncharged particle found in atomic nuclei
11. Which of the following statements is true regarding electrons?
electrons are negatively charged particles that orbit around the
outside of the nucleus of the atom
