Question 1

Which of these elements is chemically similar to oxygen?

Accepted Answer

A)  Sulfur
B)  Calcium
C)  Iron
D)  Nickel
E)  PotassiumF) C) and D)
G) B) and D)

Question 2

Why was it more difficult to design an experiment that would prove the existence of neutrons than it was to design an experiment that would prove the existence of either protons or electrons?

Accepted Answer

A)  Neutrons are smaller than either protons or electrons,so their presence is much more difficult to detect.
B)  Because neutrons are 1840 times heavier than protons,they are difficult to separate,and therefore,to count.
C)  Neutrons do not deflect charged particles.
D)  The similarity of the magnetic and electrical properties of protons and neutrons made them experimentally indistinguishable.E) A) and B)
F) A) and D)

Question 3

The elements in Group 1A are called the ________.

Accepted Answer

The answer of The elements in Group 1A are called...

Question 4

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  KF
B)  CCl4
C)  CS2
D)  CO2
E)  IClF) C) and D)
G) B) and E)

Question 5

What is the name of Cu2O?

Accepted Answer

Question 6

The formula for magnesium sulfate is

Accepted Answer

A)  MnS.
B)  MgS.
C)  MnSO3.
D)  MgSO4.
E)  MnSO4.F) D) and E)
G) A) and E)

Question 7

The molecular formula is a whole number multiple of the empirical formula.

Accepted Answer

A) True 
 B)False

Question 8

The chemical name for SO32- (aq) is sulfite ion.Therefore,the chemical name of H2SO3 (aq) is

Accepted Answer

A)  dihydrosulfuric acid.
B)  sulfurous acid.
C)  dihydrogen sulfite.
D)  hyposulfurous acid.
E)  sulfuric acid.F) A) and D)
G) All of the above

Question 9

Which of the following is a nonmetal?

Accepted Answer

A)  Lithium,Li,Z = 3
B)  Bromine,Br,Z = 35
C)  Mercury,Hg,Z = 80
D)  Bismuth,Bi,Z = 83
E)  Sodium,Na,Z = 11F) A) and E)
G) B) and E)

Question 10

What is the formula for the ionic compound formed by calcium and selenium?

Accepted Answer

A)  CaSe
B)  Ca2Se
C)  CaSe2
D)  Ca3Se
E)  CaSe3F) B) and C)
G) D) and E)

Question 11

Which one of the following formulas of ionic compounds is the least likely to be correct?

Accepted Answer

A)  NH4Cl
B)  Ba(OH) 2
C)  Na2SO4
D)  Ca2NO3
E)  Cu(CN) 2F) A) and C)
G) C) and E)

Question 12

The elements in Group 8A are called the ________.

Accepted Answer

The answer of The elements in Group 8A are called...

Question 13

The compound,P4S10,is used in the manufacture of safety matches.What is its name?

Accepted Answer

A)  phosphorus sulfide
B)  phosphoric sulfide
C)  phosphorus decasulfide
D)  tetraphosphorus decasulfide
E)  phosphorus sulfiteF) C) and D)
G) D) and E)

Question 14

Describe the difference between an empirical formula and a molecular formula.

Accepted Answer

An empirical formula is the simplest che...

Question 15

The elements in Group 2A are known by what name?

Accepted Answer

A)  Transition metals
B)  Halogens
C)  Alkali metals
D)  Alkaline earth metals
E)  Noble gasesF) C) and D)
G) A) and C)

Question 16

A row of the periodic table is called a(n)

Accepted Answer

A)  group.
B)  period.
C)  isotopic mixture.
D)  family.
E)  subshell.F) A) and E)
G) C) and E)

Question 17

What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

Accepted Answer

The answer of What is the electrostatic attraction called that...

Question 18

Which of these scientists developed the nuclear model of the atom?

Accepted Answer

A)  John Dalton
B)  Robert Millikan
C)  J.J.Thomson
D)  Henry Moseley
E)  Ernest RutherfordF) C) and D)
G) B) and D)

Question 19

The elements in Group 7A are called the ________.

Accepted Answer

The answer of The elements in Group 7A are called...

Question 20

Which isotope is not possible?

Accepted Answer

A)   
B)   
C)    
D)   
E)  All of these isotopes are possible.F) B) and C)
G) A) and E)

Exam 2: Atoms Molecules and Ions

The elements in Group 2A are known by what name?

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Which of the following is a nonmetal?

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What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

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Describe the difference between an empirical formula and a molecular formula.

Correct AnswerverifiedAn empirical formula is the simplest che...View AnswerShow Answer

What is the name of Cu2O?

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Why was it more difficult to design an experiment that would prove the existence of neutrons than it was to design an experiment that would prove the existence of either protons or electrons?

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Which one of the following formulas of ionic compounds is the least likely to be correct?

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Which of these elements is chemically similar to oxygen?

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A row of the periodic table is called a(n)

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Which isotope is not possible?

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What is the formula for the ionic compound formed by calcium and selenium?

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The elements in Group 1A are called the ________.

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The formula for magnesium sulfate is

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Which of these compounds is most likely to be ionic?

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The compound,P4S10,is used in the manufacture of safety matches.What is its name?

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The elements in Group 7A are called the ________.

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The molecular formula is a whole number multiple of the empirical formula.

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Which of these scientists developed the nuclear model of the atom?

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The elements in Group 8A are called the ________.

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The chemical name for SO32- (aq) is sulfite ion.Therefore,the chemical name of H2SO3 (aq) is

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An empirical formula is the simplest che...
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What is the name of Cu₂O?

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The compound,P₄S₁₀,is used in the manufacture of safety matches.What is its name?

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The chemical name for SO₃^2- (aq) is sulfite ion.Therefore,the chemical name of H₂SO₃ (aq) is

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