Question 1

Which of the following is the correct electron-dot symbol for carbon?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and B)
G) B) and D) C

Question 2

The proton is 2000 times the mass of the neutron.

Accepted Answer

A) True 
 B)False

Question 3

Chromium is a metal.

Accepted Answer

A) True 
 B)False

Question 4

Metallic character increases going down a group.

Accepted Answer

A) True 
 B)False

Question 5

Mercury is a metal.

Accepted Answer

A) True 
 B)False

Question 6

The number of dots in the electron dot symbol of nitrogen is ________.

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  fiveF) B) and C)
G) C) and D)

Question 7

Write the symbol from the element name.
-The symbol for lead is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 8

Which of the following descriptions of a subatomic particle is correct?

Accepted Answer

A)  A proton has a positive charge and a mass of approximately 1 amu.
B)  An electron has a negative charge and a mass of approximately 1 amu.
C)  A neutron has no charge and its mass is negligible.
D)  A proton has a positive charge and a negligible mass.
E)  A neutron has a positive charge and a mass of approximately 1 amu.F) B) and E)
G) D) and E)

Question 9

Identify the metalloid in the following list.

Accepted Answer

A)  sulfur
B)  fluorine
C)  silver
D)  copper
E)  germaniumF) D) and E)
G) C) and E)

Question 10

The Group 8A (18) elements ________.

Accepted Answer

A)  are unreactive and are rarely found in combination with other elements
B)  are good conductors of electricity
C)  melt at high temperatures
D)  are liquids at room temperature
E)  react vigorously with waterF) A) and C)
G) B) and D)

Question 11

The elements sodium,magnesium,and silicon ________.

Accepted Answer

A)  are isotopes of each other
B)  are in the same period of elements
C)  have the same number of neutrons
D)  are in the same group
E)  have the same mass numberF) B) and C)
G) A) and E) B

Question 12

What element has the electron arrangement 2,8,4?

Accepted Answer

A)  carbon
B)  oxygen
C)  sulfur
D)  iron
E)  siliconF) A) and E)
G) A) and B)

Question 13

The electron arrangement of any particular atom shows ________.

Accepted Answer

A)  the number of isotopes possible
B)  a description of the shape of each electron energy level
C)  the number of electrons in each energy level
D)  a diagram of an atomic nucleus
E)  the maximum number of electrons each energy level can holdF) A) and D)
G) D) and E)

Question 14

Write the symbol from the element name.
-The symbol for copper is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 15

The mass number of an atom can be calculated from ________.

Accepted Answer

A)  the number of electrons
B)  the number of protons plus neutrons
C)  the number of protons
D)  the number of electrons plus protons
E)  the number of neutronsF) None of the above
G) A) and B)

Question 16

The elements lithium,sodium,and potassium ________.

Accepted Answer

A)  are isotopes of each other
B)  are in the same period of elements
C)  have the same number of neutrons
D)  are in the same group
E)  have the same mass numberF) C) and D)
G) A) and B)

Question 17

Isotopes are atoms of the same element that have ________.

Accepted Answer

A)  different atomic numbers
B)  the same atomic numbers but different numbers of protons
C)  the same atomic numbers but different numbers of electrons
D)  the same atomic number but different numbers of neutrons
E)  the same atomic mass but different numbers of protonsF) A) and B)
G) B) and C)

Question 18

The mass number is equal to the number of electrons.

Accepted Answer

A) True 
 B)False  False

Question 19

The number of valence electrons found in an atom of a Group A element is equal to ________.

Accepted Answer

A)  its atomic number
B)  its mass number
C)  its group number
D)  eight
E)  eight minus the group numberF) A) and C)
G) A) and B)

Question 20

Consider a neutral atom with 30 protons and 34 neutrons.The atomic number of the element is ________.

Accepted Answer

A)  30
B)  32
C)  34
D)  64
E)  94F) A) and E)
G) A) and B)

Exam 4: Atoms and Elements

Which of the following is the correct electron-dot symbol for carbon?

Correct AnswerverifiedC

The proton is 2000 times the mass of the neutron.

Correct AnswerverifiedShow Answer

Chromium is a metal.

Correct AnswerverifiedShow Answer

Metallic character increases going down a group.

Correct AnswerverifiedShow Answer

Mercury is a metal.

Correct AnswerverifiedShow Answer

The number of dots in the electron dot symbol of nitrogen is ________.

Correct AnswerverifiedShow Answer

Write the symbol from the element name. -The symbol for lead is ________.

Correct AnswerverifiedShow Answer

Which of the following descriptions of a subatomic particle is correct?

Correct AnswerverifiedShow Answer

Identify the metalloid in the following list.

Correct AnswerverifiedShow Answer

The Group 8A (18) elements ________.

Correct AnswerverifiedShow Answer

The elements sodium,magnesium,and silicon ________.

Correct AnswerverifiedB

What element has the electron arrangement 2,8,4?

Correct AnswerverifiedShow Answer

The electron arrangement of any particular atom shows ________.

Correct AnswerverifiedShow Answer

Write the symbol from the element name. -The symbol for copper is ________.

Correct AnswerverifiedShow Answer

The mass number of an atom can be calculated from ________.

Correct AnswerverifiedShow Answer

The elements lithium,sodium,and potassium ________.

Correct AnswerverifiedShow Answer

Isotopes are atoms of the same element that have ________.

Correct AnswerverifiedShow Answer

The mass number is equal to the number of electrons.

Correct AnswerverifiedFalse

The number of valence electrons found in an atom of a Group A element is equal to ________.

Correct AnswerverifiedShow Answer

Consider a neutral atom with 30 protons and 34 neutrons.The atomic number of the element is ________.

Correct AnswerverifiedShow Answer

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C

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B

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False

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