Question 1

Which of the following best describes the difference between an ionic compound and a covalent (molecular) compound?

Accepted Answer

Ionic compounds are formed by transferring electrons from metals to nonmetals, resulting in electrostatic attraction between ions, while covalent compounds are formed by sharing electrons between nonmetals.

Question 2

Which of the following is the correct empirical formula for a compound formed from Cr$$^{3+}$$ and P$$^{3-}$$ ions?

Accepted Answer

$$\mathrm{CrP}$$

Question 3

Which of the following compounds is named correctly according to IUPAC rules?

Accepted Answer

P$$_2O$_5$$ — Diphosphorus pentoxide

Question 4

What is the correct name for the compound SO$$_2$$?

Accepted Answer

Sulfur dioxide

Question 5

Which statement best explains why ionic compounds do not conduct electricity in the solid state but do when melted or dissolved?

Accepted Answer

In the solid state, ions are fixed in place within the lattice and cannot move, but in the liquid or dissolved state, ions are free to move and carry current.

Question 6

Which of the following is a molecular element?

Accepted Answer

Chlorine (Cl$$_2)$$

Question 7

What is the correct formula for the ionic compound formed from Cu$$^{2+}$$ and O$$^{2-}$$?

Accepted Answer

$$\mathrm{CuO}$$

Question 8

Which of the following is the correct name for the compound Hg$$_3N$_2$$?

Accepted Answer

Mercury(I) nitride

Question 9

Which of the following is a property of ionic compounds?

Accepted Answer

They are hard, rigid, and brittle with high melting points.

Question 10

What is the correct name for the polyatomic ion NO$$_3^-$$?

Accepted Answer

Nitrate

Question 11

Which of the following best describes a molecule?

Accepted Answer

A discrete, uncharged group of two or more atoms (nonmetals) held together by covalent bonds.

Question 12

What is the correct name for the compound Ca(NO$$_3$$)$$_2$$?

Accepted Answer

Calcium nitrate

Question 13

Which of the following is the correct condensed structural formula for ethene?

Accepted Answer

CH$$_2CH$_2$$

Question 14

Which of the following is the correct name for HNO$$_2$$?

Accepted Answer

Nitrous acid

Question 15

Which of the following is the correct formula for the compound formed from Pb$$^{2+}$$ and CrO$$_4$$^{2-}$$?

Accepted Answer

$$\mathrm{PbCrO}_4$$

Question 16

Which of the following is the correct name for the compound N$$_2O$_4$$?

Accepted Answer

Dinitrogen tetraoxide

Question 17

Which of the following is the correct formula for the compound formed from Ba$$^{2+}$$ and N$$^{3-}$$?

Accepted Answer

$$\mathrm{Ba}_3\mathrm{N}_2$$

Question 18

Which of the following is the correct name for the compound H$$_2SO$_3$$?

Accepted Answer

Sulfurous acid

Question 19

Which of the following is a correct statement about the naming of binary covalent compounds?

Accepted Answer

The second element is named as if it were an anion, and prefixes are used to denote the number of atoms.

Chapter 4: Basic Chemical Bonding – Compounds, Formulas, and Nomenclature

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