Question 1

Which of the following statements is true?

Accepted Answer

A)   There are only about 100 different kinds of atoms that combine to form all substances.
B)   An atom is the smallest particle known to exist.
C)   A large atom can be photographed with the aid of an ordinary microscope.
D)   There are thousands of different kinds of atoms that account for a wide variety of substances.
E)   None of these statements are true.F) A) and E)
G) A) and C)

Question 2

How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   But protons will have to be subtracted, not added.F) C) and D)
G) A) and B)

Question 3

The reason a granite block is mostly empty space is that the atoms in the granite are

Accepted Answer

A)   held together by electrical forces.
B)   in perpetual motion.
C)   invisible.
D)   mostly empty space themselves.
E)   not as close together as they could be.F) C) and D)
G) None of the above

Question 4

If we doubled the magnifying power of the most powerful optical microscope in the world, we would

Accepted Answer

A)   still not be able to see or photograph an atom.
B)   be able to photograph individual atoms, even though we couldn't see them.
C)   be able to see individual atoms.D) All of the above
E) None of the above

Exam 2: Atoms

Which of the following statements is true?

Correct Answer
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If we doubled the magnifying power of the most powerful optical microscope in the world, we would

Correct Answer
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The reason a granite block is mostly empty space is that the atoms in the granite are

Correct Answer
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How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?

Correct Answer
verified

Exam 2: Atoms

Which of the following statements is true?

Correct AnswerverifiedShow Answer

If we doubled the magnifying power of the most powerful optical microscope in the world, we would

Correct AnswerverifiedShow Answer

The reason a granite block is mostly empty space is that the atoms in the granite are

Correct AnswerverifiedShow Answer

How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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