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CEM 141 MSU FINAL EXAM LATEST UPDATE WITH ALL 400
QUESTIONS AND CORRECT DETAILED SOLUTIONS JUST
RELEASED THIS YEAR
Question: Which of the following properties ascribed to atoms by the Greeks do we still
consider valid?
I. Atoms are mostly empty space
II. The size and shape of the atoms determine a material's properties
III. Atoms are indivisible
IV. Atoms are in constant motion - CORRECT ANSWER✔✔Atoms are mostly empty space
Atoms are in constant motion
Question: Electrons are negatively charged. Which experiment provided evidence to support
this claim? What is the specific evidence used to support this claim?
Experiment:
I. The gold foil experiment
II. The cathode ray tube experiment
Evidence:
III. Most of the positively charged alpha particles shot at a thin gold foil passed straight through.
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IV. A small fraction of the positively charged alpha particles shot at a thin gold foil were
deflected.
V. The beam of particles emitted from the cathode bent toward the positively charged plate.
VI. The beam of particles emitted from the cathode behaved the same no matter what type of
metal the cathode was made of. - CORRECT ANSWER✔✔The cathode ray tube experiment
The beam of particles emitted from the cathode bent toward the positively charged plate.
Question: Consider the question: Is there an attractive force between a pencil and the earth?
Is this a scientific question? [Yes or No]
Because
III. It can be tested and answered through observations and experiments
IV. The answer is already known and we find it online
V. There is no way to design an experiment to answer this question. - CORRECT ANSWER✔✔Yes
because it can be tested and answered though observations and experiments
Question: Which of the following contain(s) atoms?
a. Heat
b. Light
c. Energy
d. Dust
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e. All of the above - CORRECT ANSWER✔✔All of the above
Question: The diagram below shows alpha particles being fired at a piece of gold foil. Where
will the majority of the alpha particles be detected (point I, II, or III) and why?
IV. Alpha particles bounce off the nuclei within the gold atoms because the nuclei are much
more massive than the alpha particles.
V. The alpha particles are repelled when they come close to the nuclei because both are
charged.
VI. The alpha particles go straight through the atom because it is mostly empty space. -
CORRECT ANSWER✔✔III because the alpha particles go straight through the atom because it is
mostly empty space.
Question: Thomson's cathode ray tube experiment proved FALSE what part of Dalton's atomic
theory?
a. All atoms are indivisible and indestructible
b. All atoms of a given element are identical
c. All matter is made of atoms.
d. Compounds are formed from the combination of two or more elements.
e. Chemical reactions are rearranging of atoms - CORRECT ANSWER✔✔All atoms are indivisible
and indestructable
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Question: How would the strength of the electrostatic force change if the distance between the
two charged objects decreased?
a. The electrostatic force would become stronger
b. The electrostatic force would become weaker
c. The electrostatic force would become stronger or weaker depending on whether the force is
attractive or repulsive.
d. It is impossible to say from the information given. - CORRECT ANSWER✔✔The electrostatic
force would become stronger
Question: Consider the following statement: "A nitrogen molecule is made up of the same type
of atoms." Is this statement true or false and why?
I. True
II. False
III. An element is made up of one type of atom. Nitrogen is an element that exists as diatomic
molecules.
IV. Nitrogen is a compound that exists as diatomic molecules. Compounds are made of different
types of atoms.
V. Nitrogen is an element and therefore must exist as separate atoms and not molecules. -
CORRECT ANSWER✔✔True because an element is made up of one type of atom. Nitrogen is an
element that exists as diatomic molecules.
CEM 141 MSU FINAL EXAM LATEST UPDATE WITH ALL 400
QUESTIONS AND CORRECT DETAILED SOLUTIONS JUST
RELEASED THIS YEAR
Question: Which of the following properties ascribed to atoms by the Greeks do we still
consider valid?
I. Atoms are mostly empty space
II. The size and shape of the atoms determine a material's properties
III. Atoms are indivisible
IV. Atoms are in constant motion - CORRECT ANSWER✔✔Atoms are mostly empty space
Atoms are in constant motion
Question: Electrons are negatively charged. Which experiment provided evidence to support
this claim? What is the specific evidence used to support this claim?
Experiment:
I. The gold foil experiment
II. The cathode ray tube experiment
Evidence:
III. Most of the positively charged alpha particles shot at a thin gold foil passed straight through.
, Page 2 of 109
IV. A small fraction of the positively charged alpha particles shot at a thin gold foil were
deflected.
V. The beam of particles emitted from the cathode bent toward the positively charged plate.
VI. The beam of particles emitted from the cathode behaved the same no matter what type of
metal the cathode was made of. - CORRECT ANSWER✔✔The cathode ray tube experiment
The beam of particles emitted from the cathode bent toward the positively charged plate.
Question: Consider the question: Is there an attractive force between a pencil and the earth?
Is this a scientific question? [Yes or No]
Because
III. It can be tested and answered through observations and experiments
IV. The answer is already known and we find it online
V. There is no way to design an experiment to answer this question. - CORRECT ANSWER✔✔Yes
because it can be tested and answered though observations and experiments
Question: Which of the following contain(s) atoms?
a. Heat
b. Light
c. Energy
d. Dust
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e. All of the above - CORRECT ANSWER✔✔All of the above
Question: The diagram below shows alpha particles being fired at a piece of gold foil. Where
will the majority of the alpha particles be detected (point I, II, or III) and why?
IV. Alpha particles bounce off the nuclei within the gold atoms because the nuclei are much
more massive than the alpha particles.
V. The alpha particles are repelled when they come close to the nuclei because both are
charged.
VI. The alpha particles go straight through the atom because it is mostly empty space. -
CORRECT ANSWER✔✔III because the alpha particles go straight through the atom because it is
mostly empty space.
Question: Thomson's cathode ray tube experiment proved FALSE what part of Dalton's atomic
theory?
a. All atoms are indivisible and indestructible
b. All atoms of a given element are identical
c. All matter is made of atoms.
d. Compounds are formed from the combination of two or more elements.
e. Chemical reactions are rearranging of atoms - CORRECT ANSWER✔✔All atoms are indivisible
and indestructable
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Question: How would the strength of the electrostatic force change if the distance between the
two charged objects decreased?
a. The electrostatic force would become stronger
b. The electrostatic force would become weaker
c. The electrostatic force would become stronger or weaker depending on whether the force is
attractive or repulsive.
d. It is impossible to say from the information given. - CORRECT ANSWER✔✔The electrostatic
force would become stronger
Question: Consider the following statement: "A nitrogen molecule is made up of the same type
of atoms." Is this statement true or false and why?
I. True
II. False
III. An element is made up of one type of atom. Nitrogen is an element that exists as diatomic
molecules.
IV. Nitrogen is a compound that exists as diatomic molecules. Compounds are made of different
types of atoms.
V. Nitrogen is an element and therefore must exist as separate atoms and not molecules. -
CORRECT ANSWER✔✔True because an element is made up of one type of atom. Nitrogen is an
element that exists as diatomic molecules.
