Question 1

An atom of oxygen (168O)  has

Accepted Answer

A)   eight protons
B)   eight neutrons
C)   eight electrons
D)   all of theseE) C) and D)
F) None of the above

Question 2

The electron binding energy is stronger when

Accepted Answer

A)   there are more protons and the electron is closer to the nucleus
B)   there are fewer protons and the electron is closer to the nucleus
C)   there are fewer protons and the electron is farther from the nucleus
D)   there are more protons and the electron is farther from the nucleusE) C) and D)
F) B) and D)

Question 3

For the chemical element sodium (2211Na) , the atomic number is

Accepted Answer

A)   eleven
B)   twenty-two
C)   thirty-three
D)   none of theseE) A) and C)
F) A) and B)

Question 4

A negative ion is

Accepted Answer

A)   an electron
B)   an atom with more protons than electrons
C)   an atom with more neutrons that electrons
D)   an atom with more electrons than protonsE) All of the above
F) None of the above

Question 5

The fundamental component of the atom that has the smallest mass is the

Accepted Answer

A)   electron
B)   neutron
C)   proton
D)   none of theseE) None of the above
F) A) and B)

Question 6

An atom of helium (42He)  has

Accepted Answer

A)   two protons
B)   four protons
C)   four neutrons
D)   four electronsE) A) and B)
F) B) and C)

Question 7

Each electron shell has a specific limit to the amounts of electrons it can hold.

Accepted Answer

A) True 
 B)False

Question 8

Atoms with the same atomic number but different atomic mass numbers are

Accepted Answer

A)   isotopes
B)   isotones
C)   isobars
D)   isomersE) B) and D)
F) A) and B)

Question 9

The three fundamental particles of the atom are the

Accepted Answer

A)   element, nucleus, and electron
B)   electron, nucleus, and proton
C)   neutron, electron, and proton
D)   nucleus, proton, and neutronE) All of the above
F) B) and D)

Question 10

All compounds are molecules and all molecules are compounds.

Accepted Answer

A) True 
 B)False

Question 11

The electron binding energy does NOT depend on

Accepted Answer

A)   how close it is to the nucleus
B)   how many neutrons there are in the nucleus
C)   how many protons there are in the nucleusD) All of the above
E) A) and C)

Question 12

The earliest atomic theory is generally associated with

Accepted Answer

A)   Bohr
B)   Leucippus
C)   Democritus
D)   DaltonE) A) and B)
F) B) and C)

Question 13

If an atom has the same number of electrons and protons it will

Accepted Answer

A)   have a negative charge
B)   have a positive charge
C)   be electrically neutral
D)   none of theseE) B) and C)
F) None of the above

Question 14

Atoms with the same atomic number and atomic mass number but have different energy within their nuclei are

Accepted Answer

A)   isotopes
B)   isotones
C)   isobars
D)   isomersE) C) and D)
F) None of the above

Question 15

The word atom is derived from the Greek word atomos, meaning

Accepted Answer

A)   nuclear
B)   small
C)   indivisible
D)   invisibleE) B) and C)
F) All of the above

Question 16

Atoms with the same number of neutrons but different number of protons are

Accepted Answer

A)   isotopes
B)   isotones
C)   isobars
D)   isomersE) None of the above
F) A) and B)

Question 17

Elements can only occur naturally.

Accepted Answer

A) True 
 B)False

Question 18

How many electrons does a neutral atom of carbon (126C)  have?

Accepted Answer

A)   3
B)   6
C)   12
D)   18E) A) and D)
F) None of the above

Question 19

Each element has an unchanging number of protons.

Accepted Answer

A) True 
 B)False

Question 20

In the early 1800s English chemist John Dalton theorized that

Accepted Answer

A)   elements form compounds
B)   atoms are unique to each element in size and mass
C)   a chemical reaction results from atoms being rearranged
D)   all of theseE) All of the above
F) A) and B)

Exam 2: Structure of the Atom

The fundamental component of the atom that has the smallest mass is the

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An atom of oxygen (168O) has

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Atoms with the same atomic number but different atomic mass numbers are

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Elements can only occur naturally.

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Atoms with the same atomic number and atomic mass number but have different energy within their nuclei are

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The word atom is derived from the Greek word atomos, meaning

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The three fundamental particles of the atom are the

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Atoms with the same number of neutrons but different number of protons are

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How many electrons does a neutral atom of carbon (126C) have?

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Each element has an unchanging number of protons.

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A negative ion is

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The electron binding energy is stronger when

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All compounds are molecules and all molecules are compounds.

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In the early 1800s English chemist John Dalton theorized that

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The electron binding energy does NOT depend on

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Each electron shell has a specific limit to the amounts of electrons it can hold.

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The earliest atomic theory is generally associated with

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An atom of helium (42He) has

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If an atom has the same number of electrons and protons it will

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For the chemical element sodium (2211Na) , the atomic number is

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