$\dfrac{16.00}{2 \times 1.01 + 16.00} \times 100 \approx 88.8\%$

Question 1

Which statement best describes an ionic bond?

Accepted Answer

It is a chemical bond formed by the electrostatic attraction between positive cations and negative anions.

Question 2

What is the correct formula for calcium oxide?

Accepted Answer

$\mathrm{CaO}$

Question 3

Which of the following compounds is named correctly according to binary ionic nomenclature?

Accepted Answer

$\mathrm{NaCl}$: sodium chloride

Question 4

The magnitude of lattice energy ($LE$) for an ionic compound is given by Coulomb's Law. Which equation correctly represents this relationship?

Accepted Answer

$LE = \dfrac{Q_1 Q_2}{r}$

Question 5

Which of the following is a correct empirical formula?

Accepted Answer

$\mathrm{CH_2O}$

Question 6

A molecule of $\mathrm{H_2O}$ contains how many atoms?

Accepted Answer

3

Question 7

Which of the following is a polyatomic ion?

Accepted Answer

$\mathrm{CO_3^{2-}}$

Question 8

What is the name of the compound $\mathrm{Fe_2O_3}$?

Accepted Answer

Iron(III) oxide

Question 9

Which of the following is a correct molecular formula for dinitrogen pentoxide?

Accepted Answer

$\mathrm{N_2O_5}$

Question 10

How many oxygen atoms are present in 1 mole of $\mathrm{Ca(NO_3)_2}$?

Accepted Answer

6 moles of oxygen atoms

Question 11

Which of the following is the correct name for $\mathrm{NH_4^+}$?

Accepted Answer

Ammonium ion

Question 12

What is the percent by mass of oxygen in $\mathrm{H_2O}$? (Atomic masses: H = 1.01, O = 16.00)

Accepted Answer

$\dfrac{16.00}{2 	imes 1.01 + 16.00} 	imes 100 \approx 88.8\%$

Question 13

Which of the following is a correct name for $\mathrm{HClO_3}$?

Accepted Answer

Chloric acid

Question 14

Which of the following is a homonuclear diatomic molecule?

Accepted Answer

$\mathrm{O_2}$

Question 15

What is the correct formula for ammonium phosphate?

Accepted Answer

$\mathrm{(NH_4)_3PO_4}$

Question 16

Which of the following statements about the Law of Definite Proportions is correct?

Accepted Answer

A compound always contains the same elements in the same fixed ratio by mass.

Question 17

What is the name of $\mathrm{CuSO_4 \cdot 5H_2O}$?

Accepted Answer

Copper(II) sulfate pentahydrate

Question 18

Which of the following is the correct formula for iron(III) sulfate?

Accepted Answer

$\mathrm{Fe_2(SO_4)_3}$

Question 19

Which of the following is the correct name for $\mathrm{N_2O_5}$?

Accepted Answer

Dinitrogen pentoxide

Question 20

Which of the following is the correct formula for barium hydroxide?

Accepted Answer

$\mathrm{Ba(OH)_2}$

Ionic and Covalent Compounds: Structure, Nomenclature, and Formulas

Study Guide - Practice Questions