Pre-AP CHEM Unit 6 Day 1 Review

The anhydrous compound with the formula CrCl₃ is a violet solid.  The most common form, however, is the dark green hydrated form with the formula CrCl₃ · 6H₂O.  What is the IUPAC name for CrCl₃ · 6H₂O?

• chromium(III) chloride hexahydrate
• chromium(III) chlorate hexahydrate
• chromium(I) chlorate hexahydrate
• chromium(I) chloride hexahydrate

Choose the correct IUPAC formula for the compound lead(II) bromite.

• Pb(BrO₃)₂
• Pb(BrO₂)
• Pb(BrO₂)₂
• Pb(BrO₃)

Consider the illustration of ionic bonding shown.  How would you best describe the process of ionic bonding?

• Metals gain electrons. Nonmetals lose electrons.  The overall ratio of ions will give a netural charge. 
• Metals lose electrons. Nonmetals gain electrons.  The overall ratio of ions will have a positive charge.
• Metals lose electrons. Nonmetals gain electrons.  The overall ratio of ions will have a negative charge.
• Metals lose electrons. Nonmetals gain electrons.  The overall ratio of ions will give a netural charge.

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Use electron-dot notation to demonstratethe formation of an ionic compound involvingthe elements Al and S.

• A
• B
• C
• D

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Which of the following Lewis dot models would most likely represent the compound potassium oxide?

• A
• B
• C
• D

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Recall that the ions in ionic compounds combine to form the simplest ratio that gives an overall neutral charge.  What would this ratio be between magnesium and nitride ions?

• Mg₂N₃
• Mg₃N₂
• MgN
• Mg₂N₂

An element, X, with the general valence electron configuration 2s²2p⁵ will form what compound with magnesium?  What is the identity of element X?

• MgX
  The identity of X is oxygen.
• XMg
  The identity of X is oxygen.
• MgX₂ 
  The identity of X is fluorine.
• X₂Mg
  The identity of X is fluorine.

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Copper(II) sulfate pentahydrate is a fungicide. Mixed with lime it is called Bordeaux mixture and used to control fungus on grapes, melons, and other berries.  What is the IUPAC formula for copper(II) sulfate pentahydrate?

• CuSO₄· 5H₂O
• Cu₂SO₄· 5H₂O
• Cu₂(SO₄)₂· 5H₂O
• Cu(SO₄)₂· 5H₂O

Al₂O₃ is a common ingredient in sunscreen and is sometimes present in cosmetics such as blush, lipstick, and nail polish.  What is the IUPAC name for the compound Al₂O₃?

• dialuminum trioxide
• aluminum oxide
• aluminum(II) oxide
• aluminum(III) oxide

Metal atoms that have the general valence level configuration of ns² will form what ratio with carbonate ions?

• X(CO₃)
• X₂(CO₃)
• X(CO₃)₂
• X₂(CO₃)₂

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