CEM 141 EXAM 1 MSU POLLOCK EXAM
WITH CORRECT QUESTIONS AND
ANSWERS 2025
Which atomic model(s) would you be able to use as evidence to support the claim "atoms are
composed of mostly empty space?" - CORRECT-ANSWERSRutherford's Planetary model
"Does the planet Venus have phases like the moon?" Is this question a scientific question? -
CORRECT-ANSWERSYes because it can be tested through observations and experiments.
As two protons move toward each other, the potential energy of the system will - - CORRECT-
ANSWERSincrease because of the repulsive force between like charges.
One part of Dalton's Atomic Theory states:
Compounds are formed by combinations of atoms from two or more elements.
, Is this statement currently considered to be true or false and why? - CORRECT-
ANSWERSTrue because by definition a compound must have at least two types of
elements.
Thomson discovered that the type of metal used for the cathode did not affect the behavior of
the cathode ray. What claim does this piece of evidence support? - CORRECT-ANSWERSAll
atom contain electrons.
Consider the container of Xe atoms where two Xe atoms of interest are interacting (the
system) and are surrounded by other Xe atoms in the system. The surrounding Xe atoms have
more energy than the system. Which direction would you predict the energy would be
transferred and what would happen? - CORRECT-ANSWERSDuring a collision energy will be
transferred from the surrounding Xe atoms to the system of two Xe atoms and the stable
interaction will be overcome.
WITH CORRECT QUESTIONS AND
ANSWERS 2025
Which atomic model(s) would you be able to use as evidence to support the claim "atoms are
composed of mostly empty space?" - CORRECT-ANSWERSRutherford's Planetary model
"Does the planet Venus have phases like the moon?" Is this question a scientific question? -
CORRECT-ANSWERSYes because it can be tested through observations and experiments.
As two protons move toward each other, the potential energy of the system will - - CORRECT-
ANSWERSincrease because of the repulsive force between like charges.
One part of Dalton's Atomic Theory states:
Compounds are formed by combinations of atoms from two or more elements.
, Is this statement currently considered to be true or false and why? - CORRECT-
ANSWERSTrue because by definition a compound must have at least two types of
elements.
Thomson discovered that the type of metal used for the cathode did not affect the behavior of
the cathode ray. What claim does this piece of evidence support? - CORRECT-ANSWERSAll
atom contain electrons.
Consider the container of Xe atoms where two Xe atoms of interest are interacting (the
system) and are surrounded by other Xe atoms in the system. The surrounding Xe atoms have
more energy than the system. Which direction would you predict the energy would be
transferred and what would happen? - CORRECT-ANSWERSDuring a collision energy will be
transferred from the surrounding Xe atoms to the system of two Xe atoms and the stable
interaction will be overcome.
