Question 1

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

Accepted Answer

Ionic compounds are composed of ions held together by ionic bonds, while molecular compounds are composed of molecules held together by covalent bonds.

Question 2

What is the correct formula for the compound formed between magnesium and chlorine?

Accepted Answer

$$\mathrm{$$MgCl_2$$}$$

Question 3

Which of the following ions is formed when a sodium atom loses one electron?

Accepted Answer

$$\mathrm{Na^+}$$

Question 4

What is the name of the compound $$\mathrm{FeO}$$?

Accepted Answer

Iron(II) oxide

Question 5

Which of the following correctly describes the formation of $$\mathrm{Na_2S}$$?

Accepted Answer

Two sodium atoms each lose one electron, and one sulfur atom gains two electrons.

Question 6

What is the correct name for $$\mathrm{Cu_2S}$$?

Accepted Answer

Copper(I) sulfide

Question 7

Which of the following is the correct formula for aluminum oxide?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 8

A compound contains the ammonium ion and sulfate ion. What is its correct formula?

Accepted Answer

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

Question 9

Which of the following is the correct name for $$\mathrm{$$SnCl_2$$}$$?

Accepted Answer

Tin(II) chloride

Question 10

What is the charge on the manganese ion in $$\mathrm{$$MnF_2$$}$$?

Accepted Answer

$$2+$$

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 $$\mathrm{Ca(NO_3$)_2}$$?

Accepted Answer

Calcium nitrate

Question 13

Which of the following ions is a polyatomic ion?

Accepted Answer

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

Question 14

What is the correct formula for iron(III) phosphate?

Accepted Answer

$$\mathrm{$$FePO_4$$}$$

Question 15

Which of the following best explains why ionic compounds have high melting points?

Accepted Answer

They are composed of ions held together by strong electrostatic attractions.

Question 16

What is the correct name for $$\mathrm{Al_2$(CO_3$)_3}$$?

Accepted Answer

Aluminum carbonate

Question 17

Which of the following is the correct formula for copper(I) oxide?

Accepted Answer

$$\mathrm{Cu_2O}$$

Question 18

A patient is given a medication containing $$\mathrm{$$KNO_3$$}. $$What is the name of this compound?

Accepted Answer

Potassium nitrate

Question 19

Which of the following is the correct name for $$\mathrm{$$SnSO_4$$}$$?

Accepted Answer

Tin(II) sulfate

Question 20

Which of the following is the correct formula for nickel(III) oxide?

Accepted Answer

$$\mathrm{Ni_2O_3}$$

Ionic and Molecular Compounds: Structure, Naming, and Formulas

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