CHEM 1120 Exams 1, 2 & 3 Study Guide | General Chemistry Review & Practice
Questions
The melting point of a compound is 2400 K. What is this temperature on the Celsius scale?
A) 2673°C
B) 2127°C
C) 2188°C
D) 2300°C - ANS ✔✔B) 2127°C
Lavoisier performed many of the same experiments as his predecessors. The one thing that
most distinguished Lavoisier's work was...
A) the results.
B) the mass measurements.
C) the glassware.
D) the chemicals. - ANS ✔✔B) the mass measurements.
Which of the following represents an element?
A) Se
B) O2
C) HF
D) F2 - ANS ✔✔A) Se
Which of the following was NOT a result of alchemy?
A) Alchemists developed techniques such as distillation and extraction that are still used today.
B) The philosopher's stone was successfully used to change base metals, such as lead, into gold.
C) Many new chemicals were discovered.
,D) Many modern chemists inherited an interest in health and medicines from the alchemists. -
ANS ✔✔B) The philosopher's stone was successfully used to change base metals, such as lead,
into gold.
32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. If 16 g of sulfur
and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of
the material in the container after the reaction is completed?
A) 100 g
B) 40 g
C) 116 g
D) 16 g - ANS ✔✔C) 116 g
A scientific hypothesis is..
A) simple.
B) complex.
C) absolute.
D) tentative. - ANS ✔✔D) tentative
The Greek word atomos means...
A) continuous.
B) atom.
C) invisible.
D) uncuttable. - ANS ✔✔D) uncuttable.
The boiling point of a liquid is 178°C. What is this temperature on the Kelvin scale?
A) 451 K
B) 95 K
, C) 178 K
D) -95 K - ANS ✔✔A) 451 K
A substance that cannot be broken down by chemical means into simpler substances is called
a(n)
A) element.
B) solid.
C) mixture.
D) compound. - ANS ✔✔A) element.
Tangible items or pictures used by scientists to represent invisible processes are called
A) laws.
B) theories.
C) models.
D) experiments. - ANS ✔✔C) models
A gas is characterized by a(n)
A) definite shape and indefinite volume.
B) indefinite shape and definite volume.
C) definite shape and definite volume.
D) indefinite shape and indefinite volume. - ANS ✔✔D) indefinite shape and indefinite volume.
Joe conducts an experiment to test the effectiveness of a new drug for cancer. Which of the
following variables would be easiest to control?
A) exposure to air pollution
B) exposure to other people
C) patient's diet
Questions
The melting point of a compound is 2400 K. What is this temperature on the Celsius scale?
A) 2673°C
B) 2127°C
C) 2188°C
D) 2300°C - ANS ✔✔B) 2127°C
Lavoisier performed many of the same experiments as his predecessors. The one thing that
most distinguished Lavoisier's work was...
A) the results.
B) the mass measurements.
C) the glassware.
D) the chemicals. - ANS ✔✔B) the mass measurements.
Which of the following represents an element?
A) Se
B) O2
C) HF
D) F2 - ANS ✔✔A) Se
Which of the following was NOT a result of alchemy?
A) Alchemists developed techniques such as distillation and extraction that are still used today.
B) The philosopher's stone was successfully used to change base metals, such as lead, into gold.
C) Many new chemicals were discovered.
,D) Many modern chemists inherited an interest in health and medicines from the alchemists. -
ANS ✔✔B) The philosopher's stone was successfully used to change base metals, such as lead,
into gold.
32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. If 16 g of sulfur
and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of
the material in the container after the reaction is completed?
A) 100 g
B) 40 g
C) 116 g
D) 16 g - ANS ✔✔C) 116 g
A scientific hypothesis is..
A) simple.
B) complex.
C) absolute.
D) tentative. - ANS ✔✔D) tentative
The Greek word atomos means...
A) continuous.
B) atom.
C) invisible.
D) uncuttable. - ANS ✔✔D) uncuttable.
The boiling point of a liquid is 178°C. What is this temperature on the Kelvin scale?
A) 451 K
B) 95 K
, C) 178 K
D) -95 K - ANS ✔✔A) 451 K
A substance that cannot be broken down by chemical means into simpler substances is called
a(n)
A) element.
B) solid.
C) mixture.
D) compound. - ANS ✔✔A) element.
Tangible items or pictures used by scientists to represent invisible processes are called
A) laws.
B) theories.
C) models.
D) experiments. - ANS ✔✔C) models
A gas is characterized by a(n)
A) definite shape and indefinite volume.
B) indefinite shape and definite volume.
C) definite shape and definite volume.
D) indefinite shape and indefinite volume. - ANS ✔✔D) indefinite shape and indefinite volume.
Joe conducts an experiment to test the effectiveness of a new drug for cancer. Which of the
following variables would be easiest to control?
A) exposure to air pollution
B) exposure to other people
C) patient's diet
