Question 1

A pair of hydrogen nuclei fused together produces

Accepted Answer

A) helium. 
B) lithium. 
C) beryllium. 
D) carbon. 
E) iron. 
A) helium. 
B) lithium. 
C) beryllium. 
D) carbon. 
E) iron. A

Question 2

Which of these atoms has the greatest number of electrons?

Accepted Answer

A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium 
A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium E

Question 3

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 the above 
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 the above B

Question 4

An element is distinct because of its number of

Accepted Answer

A) protons. 
B) neutrons. 
C) electrons. 
D) the total mass of all the particles. 
E) none of the above 
A) protons. 
B) neutrons. 
C) electrons. 
D) the total mass of all the particles. 
E) none of the above

Question 5

A force that determines the chemical properties of an atom is

Accepted Answer

A) a friction force. 
B) a nuclear force. 
C) a gravitational force. 
D) an electrical force. 
E) none of the above 
A) a friction force. 
B) a nuclear force. 
C) a gravitational force. 
D) an electrical force. 
E) none of the above

Question 6

If a nitrogen atom and a slightly heavier oxygen atom have equal kinetic energies, which has the greater average speed?

Accepted Answer

A) nitrogen 
B) oxygen 
C) both the same 
D) need more information 
A) nitrogen 
B) oxygen 
C) both the same 
D) need more information

Question 7

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 8

An isotope is simply an atom that

Accepted Answer

A) is electrically charged. 
B) has different numbers of neutrons for the same element. 
C) both of these 
D) neither of these 
A) is electrically charged. 
B) has different numbers of neutrons for the same element. 
C) both of these 
D) neither of these

Question 9

How many atoms are in this carbohydrate molecule, C6H12O6?

Accepted Answer

A) 3. 
B) 14. 
C) 18. 
D) 24. 
E) none of the above 
A) 3. 
B) 14. 
C) 18. 
D) 24. 
E) none of the above

Question 10

Nuclei of atoms that make up a newborn baby were manufactured in

Accepted Answer

A) the mother's womb. 
B) the food the mother eats before delivery. 
C) ancient stars. 
D) the Earth. 
E) none of the above 
A) the mother's womb. 
B) the food the mother eats before delivery. 
C) ancient stars. 
D) the Earth. 
E) none of the above

Question 11

If a nitrogen atom and a slightly heavier oxygen atom have equal average speeds, which has the greater kinetic energy?

Accepted Answer

A) nitrogen 
B) oxygen 
C) both the same 
D) need more information 
A) nitrogen 
B) oxygen 
C) both the same 
D) need more information

Question 12

Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, we breathe in at least one of them each

Accepted Answer

A) single breath. 
B) day. 
C) month. 
D) ten years. 
E) can't say for some people breathe a few of Caesar's atoms daily, while others never. 
A) single breath. 
B) day. 
C) month. 
D) ten years. 
E) can't say for some people breathe a few of Caesar's atoms daily, while others never.

Question 13

Mass number refers to the number of

Accepted Answer

A) protons in the nucleus. 
B) neutrons in the nucleus. 
C) nucleons in the nucleus. 
A) protons in the nucleus. 
B) neutrons in the nucleus. 
C) nucleons in the nucleus.

Question 14

Which of the following are electrically neutral?

Accepted Answer

A) protons 
B) neutrons 
C) electrons 
D) ions 
E) none of the above 
A) protons 
B) neutrons 
C) electrons 
D) ions 
E) none of the above

Question 15

Which of the following is an inert gas?

Accepted Answer

A) Hydrogen 
B) Helium. 
C) Carbon 
D) Oxygen 
A) Hydrogen 
B) Helium. 
C) Carbon 
D) Oxygen

Question 16

A molecule has

Accepted Answer

A) mass. 
B) structure. 
C) energy. 
D) all of the above 
E) none of the above 
A) mass. 
B) structure. 
C) energy. 
D) all of the above 
E) none of the above

Question 17

Which of the following is NOT a mixture?

Accepted Answer

A) granite 
B) cake 
C) air 
D) beach sand 
E) none of the above 
A) granite 
B) cake 
C) air 
D) beach sand 
E) none of the above

Question 18

One neutron added to a helium nucleus results in

Accepted Answer

A) hydrogen. 
B) boron. 
C) lithium. 
D) beryllium. 
E) helium. 
A) hydrogen. 
B) boron. 
C) lithium. 
D) beryllium. 
E) helium.

Question 19

Which of the following statements is true?

Accepted Answer

A) a molecule is the smallest existing particle 
B) chemical elements are made up of about 100 distinct molecules 
C) molecules form atoms that determine chemical properties of a substance 
D) molecules are the smallest subdivision of matter that still retain a substance's chemical properties 
E) none of the above 
A) a molecule is the smallest existing particle 
B) chemical elements are made up of about 100 distinct molecules 
C) molecules form atoms that determine chemical properties of a substance 
D) molecules are the smallest subdivision of matter that still retain a substance's chemical properties 
E) none of the above

Question 20

Which of these has the greatest number of protons in its nucleus?

Accepted Answer

A) gold 
B) mercury 
C) lead 
D) silver 
A) gold 
B) mercury 
C) lead 
D) silver

Exam 11: Atomic Nature of Matter

A pair of hydrogen nuclei fused together produces

Which of these atoms has the greatest number of electrons?

Which of the following statements is true?

An element is distinct because of its number of

A force that determines the chemical properties of an atom is

If a nitrogen atom and a slightly heavier oxygen atom have equal kinetic energies, which has the greater average speed?

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

An isotope is simply an atom that

How many atoms are in this carbohydrate molecule, C6H12O6?

Nuclei of atoms that make up a newborn baby were manufactured in

If a nitrogen atom and a slightly heavier oxygen atom have equal average speeds, which has the greater kinetic energy?

Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, we breathe in at least one of them each

Mass number refers to the number of

Which of the following are electrically neutral?

Which of the following is an inert gas?

A molecule has

Which of the following is NOT a mixture?

One neutron added to a helium nucleus results in

Which of the following statements is true?

Which of these has the greatest number of protons in its nucleus?

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How many atoms are in this carbohydrate molecule, C₆H₁₂O₆?