CHEM 104 Exam 1 Questions and
Answers Verified Solutions Latest Update
2026/2027
Question:
A+ Identify each of the following as an observation, a hypothesis, an experiment, or a theory:
A. During your visit to the gym, your trainer records that you ran for 25 minutes on the
treadmill.
B. Scientific studies shows that exercising lowers blood pressure.
C. Your doctor thinks that your weight loss is due to increased exercise.
Answer:
A. Observation
B. Theory
C. Hypothesis
Question:
Identify each of the following as an observation, a hypothesis, an experiment, or a conclusion:
a. Drinking coffee at night keeps me awake.
b. If I stop drinking coffee in the afternoon, I will be able to sleep at night.
c. I will try drinking coffee only in the morning
Answer:
a. Observation
b. Hypothesis
c. Experiment
Question:
Which statement most resembles a scientific theory?
a. When the pressure on a sample of oxygen gas is increased 10%, the volume of the
gas decreases by 10%.
b. The volume of a gas is inversely proportional to its pressure.
c. A gas is composed of small particles in constant motion.
d. A gas sample has a mass of 15.8 grams and a volume of 10.5 liters.
, Answer:
c. A gas is
composed of small particles in constant motion.
Question:
Which statement accurately describes the purpose of experiments?
a. Experiments are designed to produce the results predicted by a theory.
b. Experiments can be replaced by a simple, logical reasoning of known facts.
c. Experiments are designed to produce unexplainable results for further investigation.
d. Experiments look for other observable predictions of a theory.
Answer:
d. Experiments
look for other observable predictions of a theory.
Question:
Which of the following is an example of an observation?
a. Energy may be converted from one form to another, but the total quantity of energy
remains constant.
b. Gases consist of molecules in constant random motion.
c. The burning of wood results in a flame, heat, smoke, and ash.
d. A pure compound always contains definite or constant proportions of elements by
mass. e. None of the above
Answer:
c. The burning of wood results in a flame, heat, smoke, and
ash.
Question:
Which of the following is an experiment (E)?
a. Eating salsa gives me heartburn.
b. If I stop eating salsa, my heartburn will go away.
c. I will stop eating salsa for 10 days, then eat salsa twice a day for the next 10 days
and record each time I get heartburn in a journal.
Answer:
Answers Verified Solutions Latest Update
2026/2027
Question:
A+ Identify each of the following as an observation, a hypothesis, an experiment, or a theory:
A. During your visit to the gym, your trainer records that you ran for 25 minutes on the
treadmill.
B. Scientific studies shows that exercising lowers blood pressure.
C. Your doctor thinks that your weight loss is due to increased exercise.
Answer:
A. Observation
B. Theory
C. Hypothesis
Question:
Identify each of the following as an observation, a hypothesis, an experiment, or a conclusion:
a. Drinking coffee at night keeps me awake.
b. If I stop drinking coffee in the afternoon, I will be able to sleep at night.
c. I will try drinking coffee only in the morning
Answer:
a. Observation
b. Hypothesis
c. Experiment
Question:
Which statement most resembles a scientific theory?
a. When the pressure on a sample of oxygen gas is increased 10%, the volume of the
gas decreases by 10%.
b. The volume of a gas is inversely proportional to its pressure.
c. A gas is composed of small particles in constant motion.
d. A gas sample has a mass of 15.8 grams and a volume of 10.5 liters.
, Answer:
c. A gas is
composed of small particles in constant motion.
Question:
Which statement accurately describes the purpose of experiments?
a. Experiments are designed to produce the results predicted by a theory.
b. Experiments can be replaced by a simple, logical reasoning of known facts.
c. Experiments are designed to produce unexplainable results for further investigation.
d. Experiments look for other observable predictions of a theory.
Answer:
d. Experiments
look for other observable predictions of a theory.
Question:
Which of the following is an example of an observation?
a. Energy may be converted from one form to another, but the total quantity of energy
remains constant.
b. Gases consist of molecules in constant random motion.
c. The burning of wood results in a flame, heat, smoke, and ash.
d. A pure compound always contains definite or constant proportions of elements by
mass. e. None of the above
Answer:
c. The burning of wood results in a flame, heat, smoke, and
ash.
Question:
Which of the following is an experiment (E)?
a. Eating salsa gives me heartburn.
b. If I stop eating salsa, my heartburn will go away.
c. I will stop eating salsa for 10 days, then eat salsa twice a day for the next 10 days
and record each time I get heartburn in a journal.
Answer:
