Unit 2 Naming Elements and Compounds Quiz -- Thurston High Chemistry

Multiple Choice (Choose the best answer.)

Use the following four compounds to answer to answer questions 1 and 2:

I. Cu(NO3)2

II. CH3OH

III. Phosphorus Trichloride

IV. Sodium Sulfate

1. Which compound(s) above would be expected to conduct electricity when dissolved in water?

   I only

   II only

   II and III only

   II and IV only

   None of these are correct.

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2. Which compound(s) above is/are molecular?

   I only

   II only

   II and III only

   II and IV only

   None of these are correct.

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3. Prefixes are used to name what types of compounds?

   Acidic Compounds

   Ionic Compounds

   Molecular Compounds

   Organic Compounds

   More than one of the above is correct.

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4. Which of the metals listed below can have more than one charge?

   Lithium

   Sulfide

   Iron

   Chloride

   More than one of the above is correct.

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5. The aluminum ion is Al³⁺ while the sulfate ion is SO₄^2-. What would be the correct formula for aluminum sulfate?

   AlSO₄

   Al₂SO_{4 3}

   Al₃(SO₄)₂

   Al₂(SO₄)₃

   Al₂S₃O₁₂

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6. What would be the best name for B₂S₃?

   Beryllium Sulfide

   Boron Sulfide

   Diboron Trisulfide

   Diboron Trisulfate

   None of these are correct.

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7. What would be the best name for Cr(OH)₃?

   Mono Chromium Trioxide Trihydride

   Chromium Trioxide Trihydride

   Chromium Trihydroxide

   Chromium Hydroxide

   Chromium (III) Hydroxide

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8. What would be the best name for K₃PO₄?

   Potassium Phosphate

   Potassium (I) Phosphate

   Tripotassium Phosphate

   Tripotassium Monophosphorus Tetroxide

   Potassium Phosphide Oxide

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9. What is the formula for tetraphosphorus hexoxide?

   ₄P₇O

   P₄O₇

   P₄O₆

   (P)₄(O)₇

   None of these are correct.

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10. What is the formula for magnesium iodide?

    MgI

    MgI₂

    Mg₂I

    Mg₂I₂

    None of these are correct.

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