Question 1

Which of the following is a molecular compound?

Accepted Answer

CO2

Question 2

What is the correct name for the compound $$\mathrm{N_2O_5}$$?

Accepted Answer

Dinitrogen pentoxide

Question 3

Which of the following formulas represents an ionic compound?

Accepted Answer

Na2SO4

Question 4

What is the correct name for $$\mathrm{$$CrCl_3$$}$$?

Accepted Answer

Chromium(III) chloride

Question 5

Which of the following is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 6

What is the correct name for $$\mathrm{P_2O_3}$$?

Accepted Answer

Diphosphorus trioxide

Question 7

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 8

What is the correct name for $$\mathrm{$$KNO_3$$}$$?

Accepted Answer

Potassium nitrate

Question 9

Which of the following best describes the difference between molecular and ionic compounds?

Accepted Answer

Molecular compounds are composed of only nonmetals; ionic compounds are composed of metals and nonmetals.

Question 10

What is the correct name for $$\mathrm{Ca(OH)_2}$$?

Accepted Answer

Calcium hydroxide

Question 11

Which of the following is the correct formula for sodium phosphate?

Accepted Answer

$$\mathrm{Na_3PO_4}$$

Question 12

What is the correct name for $$\mathrm{SO_3$}$$?

Accepted Answer

Sulfur trioxide

Question 13

Which of the following is the correct name for $$\mathrm{Fe_2$(SO_4$)_3}$$?

Accepted Answer

Iron(III) sulfate

Question 14

What is the correct formula for magnesium nitrate?

Accepted Answer

$$\mathrm{Mg(NO_3$)_2}$$

Question 15

Which of the following is the correct name for $$\mathrm{$$ClO_2$$^-}$$?

Accepted Answer

Chlorite

Question 16

A compound contains 2 nitrogen atoms and 4 oxygen atoms. What is the correct name for $$\mathrm{N_2O_4}$$?

Accepted Answer

Dinitrogen tetroxide

Question 17

Which of the following is the correct name for $$\mathrm{$$NaHCO_3$$}$$, a common ingredient in baking soda?

Accepted Answer

Sodium hydrogen carbonate

Question 18

Which of the following is the correct formula for calcium phosphate, a major component of bones?

Accepted Answer

$$\mathrm{Ca_3$(PO_4$)_2}$$

Question 19

Which of the following is the correct name for $$\mathrm{H_2SO_4}$$, a common industrial acid?

Accepted Answer

Sulfuric acid

Question 20

Which of the following best describes the meaning of the subscript in a chemical formula?

Accepted Answer

It shows how many of that element are present in the species.

Molecules, Compounds, and Chemical Nomenclature: Study Notes for Introductory Chemistry

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