Question 1

The volume of matter comes mostly from its

Accepted Answer

A) protons. 
B) electrons. 
C) neutrons 
A) protons. 
B) electrons. 
C) neutrons B

Question 2

If a pair of helium nuclei are fused together,the result is

Accepted Answer

A) helium isotope. 
B) lithium. 
C) beryllium. 
D) boron. 
E) carbon. 
A) helium isotope. 
B) lithium. 
C) beryllium. 
D) boron. 
E) carbon. C

Question 3

Solid matter is mostly empty space.The reason solids don't fall through one another is because

Accepted Answer

A) atoms are constantly vibrating,even at absolute zero. 
B) of nuclear forces. 
C) of gravitational forces. 
D) of electrical forces. 
E) none of these 
A) atoms are constantly vibrating,even at absolute zero. 
B) of nuclear forces. 
C) of gravitational forces. 
D) of electrical forces. 
E) none of these D

Question 4

Compared to the energy it takes to separate oxygen and hydrogen from water,the amount of energy given off when they recombine is

Accepted Answer

A) slightly more. 
B) slightly less. 
C) much more. 
D) much less. 
E) the same. 
A) slightly more. 
B) slightly less. 
C) much more. 
D) much less. 
E) the same.

Question 5

In our part of the universe,antimatter is

Accepted Answer

A) non-existent. 
B) plentiful. 
C) short-lived. 
D) long-lived. 
A) non-existent. 
B) plentiful. 
C) short-lived. 
D) long-lived.

Question 6

To change mercury into gold,a pair of protons must be

Accepted Answer

A) removed from the mercury nucleus. 
B) added to the mercury nucleus. 
C) removed from the gold nucleus 
D) added to the gold nucleus. 
E) None of the above is true. 
A) removed from the mercury nucleus. 
B) added to the mercury nucleus. 
C) removed from the gold nucleus 
D) added to the gold nucleus. 
E) None of the above is true.

Question 7

Which of these atoms has the most mass?

Accepted Answer

A) hydrogen 
B) iron 
C) lead 
D) uranium 
E) All have the same mass. 
A) hydrogen 
B) iron 
C) lead 
D) uranium 
E) All have the same mass.

Question 8

A force that determines the chemical properties of an atom is a(n)

Accepted Answer

A) friction force. 
B) nuclear force. 
C) gravitational force. 
D) electrical force. 
E) none of these 
A) friction force. 
B) nuclear force. 
C) gravitational force. 
D) electrical force. 
E) none of these

Question 9

Compared to the atoms that make up the body of an elderly person,the atoms that make up the body of a newborn baby are

Accepted Answer

A) newer. 
B) actually older. 
C) the same age. 
A) newer. 
B) actually older. 
C) the same age.

Question 10

If a gram of antimatter meets a kilogram of matter,the amount of mass to survive is

Accepted Answer

A) 1 gram. 
B) 999 grams. 
C) 1 kilogram. 
D) 1)1 kilogram. 
A) 1 gram. 
B) 999 grams. 
C) 1 kilogram. 
D) 1)1 kilogram.

Question 11

If two protons are added to an oxygen nucleus,the result is

Accepted Answer

A) heavy oxygen. 
B) fluorine. 
C) neon. 
D) sodium. 
E) nitrogen. 
A) heavy oxygen. 
B) fluorine. 
C) neon. 
D) sodium. 
E) nitrogen.

Question 12

A positron orbiting an antiproton would make up an atom of

Accepted Answer

A) positronium. 
B) unobtainium. 
C) anti-helium. 
D) anti-hydrogen. 
E) none of these 
A) positronium. 
B) unobtainium. 
C) anti-helium. 
D) anti-hydrogen. 
E) none of these

Question 13

Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere,then we probably breathe one of those atoms with each

Accepted Answer

A) single breath. 
B) day. 
C) month. 
D) ten years. 
E) It depends - some people still breathe a few of Caesar's atoms every day,while others wouldn't breathe one for an entire year. 
A) single breath. 
B) day. 
C) month. 
D) ten years. 
E) It depends - some people still breathe a few of Caesar's atoms every day,while others wouldn't breathe one for an entire year.

Question 14

If two protons are removed from an oxygen nucleus,the result is

Accepted Answer

A) nitrogen. 
B) carbon. 
C) helium. 
D) neon. 
E) positively charged oxygen. 
A) nitrogen. 
B) carbon. 
C) helium. 
D) neon. 
E) positively charged oxygen.

Question 15

Which of the following statements is true?

Accepted Answer

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

Question 16

The chemical properties of matter come mostly from its

Accepted Answer

A) protons. 
B) electrons. 
C) neutrons. 
A) protons. 
B) electrons. 
C) neutrons.

Question 17

Compared to the mass of a hydrogen atom,the mass of an oxygen atom is

Accepted Answer

A) 8 times as great. 
B) 12 times as great. 
C) 16 times as great. 
D) appreciably more than 16 times as great. 
A) 8 times as great. 
B) 12 times as great. 
C) 16 times as great. 
D) appreciably more than 16 times as great.

Question 18

Which of the following are electrically neutral?

Accepted Answer

A) proton 
B) neutron 
C) electron 
D) ion 
E) none of these 
A) proton 
B) neutron 
C) electron 
D) ion 
E) none of these

Question 19

There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of

Accepted Answer

A) a large auditorium. 
B) a large city. 
C) the United States. 
D) the whole world. 
E) none of these 
A) a large auditorium. 
B) a large city. 
C) the United States. 
D) the whole world. 
E) none of these

Question 20

The air in this room has

Accepted Answer

A) mass. 
B) weight. 
C) energy. 
D) all of these 
E) none of these 
A) mass. 
B) weight. 
C) energy. 
D) all of these 
E) none of these

Exam 11: Atomic Nature of Matter

The volume of matter comes mostly from its

If a pair of helium nuclei are fused together,the result is

Solid matter is mostly empty space.The reason solids don't fall through one another is because

Compared to the energy it takes to separate oxygen and hydrogen from water,the amount of energy given off when they recombine is

In our part of the universe,antimatter is

To change mercury into gold,a pair of protons must be

Which of these atoms has the most mass?

A force that determines the chemical properties of an atom is a(n)

Compared to the atoms that make up the body of an elderly person,the atoms that make up the body of a newborn baby are

If a gram of antimatter meets a kilogram of matter,the amount of mass to survive is

If two protons are added to an oxygen nucleus,the result is

A positron orbiting an antiproton would make up an atom of

Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere,then we probably breathe one of those atoms with each

If two protons are removed from an oxygen nucleus,the result is

Which of the following statements is true?

The chemical properties of matter come mostly from its

Compared to the mass of a hydrogen atom,the mass of an oxygen atom is

Which of the following are electrically neutral?

There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of

The air in this room has

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