CEM 141 MSU Exam 1 Newest 2026
Questions and Correct Detailed Answers
Already Graded A+
What happens to the total energy when the atoms get close to overlapping
electron clouds? - CORRECT ANSWER-Stays the same
What happens to the kinetic energy when the atoms get close to overlapping the
electron clouds? - CORRECT ANSWER-Decreases
What happens to the potential energy when the atoms overlap electron clouds? -
CORRECT ANSWER-Increases
The statement "If I add cold milk to hot coffee the temperature will decrease," is
a? - CORRECT ANSWER-Claim, always include an explanation and reasoning to
the claim.
Scientific Model - CORRECT ANSWER-Models are used to make testable
predictions
, How much is a picometer? - CORRECT ANSWER-0.1 x 10^-12 meters
Atomic Force Microscopy/ Scanning Tunneling Microscopy - CORRECT
ANSWER-Microscopes that now allows us to view atoms.
Leaves are green in the summer because? - CORRECT ANSWER-A plant's
leaves are green in the summer because they contain chlorophyll. Chlorophyll is a
natural pigment that absorbs all wavelengths in the visible spectrum except
green.
How many naturally occurring elements exist? - CORRECT ANSWER-91
What was Dalton's Atomic theory? (1808) - CORRECT ANSWER-- Elements are
composed of small particles called Atoms.
- Atoms of a given element are different from atoms of other elements.
-Chemical reactions happen when atoms are rearranged.
- Compounds contain 2 or more elements.
What was J.J. Thomson's experiment, and what did he discover? - CORRECT
ANSWER-Using a Cathode Ray Tube, he noticed that particles emerged to the
Questions and Correct Detailed Answers
Already Graded A+
What happens to the total energy when the atoms get close to overlapping
electron clouds? - CORRECT ANSWER-Stays the same
What happens to the kinetic energy when the atoms get close to overlapping the
electron clouds? - CORRECT ANSWER-Decreases
What happens to the potential energy when the atoms overlap electron clouds? -
CORRECT ANSWER-Increases
The statement "If I add cold milk to hot coffee the temperature will decrease," is
a? - CORRECT ANSWER-Claim, always include an explanation and reasoning to
the claim.
Scientific Model - CORRECT ANSWER-Models are used to make testable
predictions
, How much is a picometer? - CORRECT ANSWER-0.1 x 10^-12 meters
Atomic Force Microscopy/ Scanning Tunneling Microscopy - CORRECT
ANSWER-Microscopes that now allows us to view atoms.
Leaves are green in the summer because? - CORRECT ANSWER-A plant's
leaves are green in the summer because they contain chlorophyll. Chlorophyll is a
natural pigment that absorbs all wavelengths in the visible spectrum except
green.
How many naturally occurring elements exist? - CORRECT ANSWER-91
What was Dalton's Atomic theory? (1808) - CORRECT ANSWER-- Elements are
composed of small particles called Atoms.
- Atoms of a given element are different from atoms of other elements.
-Chemical reactions happen when atoms are rearranged.
- Compounds contain 2 or more elements.
What was J.J. Thomson's experiment, and what did he discover? - CORRECT
ANSWER-Using a Cathode Ray Tube, he noticed that particles emerged to the
