Question 1

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

Accepted Answer

A)  Solute
B)  Compound
C)  Homogeneous mixture
D)  Heterogeneous mixture
E)  Solvent

Question 2

The formula for sodium sulfide is

Accepted Answer

A)  NaS
B)  K2S
C)  NaS2
D)  Na2S
E)  SeS

Question 3

A scoop of vanilla ice cream is a pure substance.

Accepted Answer

A) True 
 B)False

Question 4

Which of these compounds is most likely to be covalent?

Accepted Answer

A)  Rb2S
B)  SrCl2
C)  CS2
D)  CaO
E)  MgI2

Question 5

Which of the following elements exists as a diatomic molecule in the elemental state?

Accepted Answer

A)  Li
B)  Ne
C)  Cl
D)  Cu

Question 6

Determine the charge on the unknown ion, A, in the compound AO.

Accepted Answer

A)  +2
B)  +1
C)  -1
D)  -2

Question 7

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

Accepted Answer

A)  I2O5
B)  IO5
C)  2IO5
D)  I5O2
E)  (IO5) 2

Question 8

What types of elements undergo ionic bonding?

Accepted Answer

A)  two metals
B)  a nonmetal and a metal
C)  two nonmetals
D)  two Group 1A elements
E)  two noble gases

Question 9

Which of these compounds is most likely to be covalent?

Accepted Answer

A)  KF
B)  CaCl2
C)  SF4
D)  Al2O3
E)  CaSO4

Question 10

What is the chemical name of FeSO3.

Accepted Answer

A)  Iron(II)  sulfite
B)  Iron(III)  sulfate
C)  Iron sulfate
D)  Iron sulfur trioxide
E)  None of the above names is correct.

Question 11

What is the name of ClO − ion?

Accepted Answer

A)  hypochlorite
B)  chlorate
C)  chlorite
D)  perchlorate
E)  perchlorite

Question 12

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  NCl3
B)  BaCl2
C)  CO
D)  SO2
E)  SF4

Question 13

Which of the following is the empirical formula for hexane, C6H14?

Accepted Answer

A)  C12H28
B)  C6H14
C)  C3H7
D)  CH2.3
E)  C0.43H

Question 14

What is the formula for lead(II)  oxide?

Accepted Answer

A)  PbO
B)  PbO2
C)  Pb2O
D)  PbO4
E)  Pb2O3

Question 15

The rusting of a piece of iron under environmental conditions is a physical change.

Accepted Answer

A) True 
 B)False

Question 16

Determine the charge on the unknown ion, A, in the compound ACl2.

Accepted Answer

A)  +2
B)  +1
C)  -1
D)  -2

Question 17

Determine the charge on the unknown ion, A, in the compound A2S.

Accepted Answer

A)  +2
B)  +1
C)  -1
D)  -2

Question 18

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Accepted Answer

A)  C2H6
B)  C3H9
C)  C4H10
D)  C6H6
E)  None of the answers is correct.

Question 19

Which of the following is a covalent compound?

Accepted Answer

A)  Na2O
B)  CaCl2
C)  Cl2O
D)  CsCl
E)  Al2O3

Question 20

Which of these pairs of elements would be most likely to form an ionic compound?

Accepted Answer

A)  Cl and I
B)  Al and K
C)  Cl and Mg
D)  C and S
E)  Al and Mg

Exam 3: Compounds and Chemical Bonds

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

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What is the name of ClO − ion?

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Which of these compounds is most likely to be ionic?

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The formula for sodium sulfide is

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Which of these compounds is most likely to be covalent?

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What types of elements undergo ionic bonding?

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Which of the following is the empirical formula for hexane, C6H14?

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Which of these pairs of elements would be most likely to form an ionic compound?

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Determine the charge on the unknown ion, A, in the compound A2S.

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The rusting of a piece of iron under environmental conditions is a physical change.

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Determine the charge on the unknown ion, A, in the compound ACl2.

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A scoop of vanilla ice cream is a pure substance.

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What is the chemical name of FeSO3.

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If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

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Which of the following elements exists as a diatomic molecule in the elemental state?

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Which of the following is a covalent compound?

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What is the formula for lead(II) oxide?

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Which of the following is a molecular formula for a compound with an empirical formula of CH?

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Which of these compounds is most likely to be covalent?

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Determine the charge on the unknown ion, A, in the compound AO.

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What is the name of ClO ⁻ ion?

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Which of the following is the empirical formula for hexane, C₆H₁₄?

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Determine the charge on the unknown ion, A, in the compound A₂S.

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What is the chemical name of FeSO₃.

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