Question 1

Which of the following best describes the difference between an ionic and a covalent bond?

Accepted Answer

Ionic bonds involve the transfer of electrons from a metal to a nonmetal, while covalent bonds involve the sharing of electrons between nonmetals.

Question 2

Which formula shows the simplest whole-number ratio of atoms in a compound?

Accepted Answer

Empirical formula

Question 3

What is the correct empirical formula for glucose, whose molecular formula is $\mathrm{C_6H_{12}O_6}$?

Accepted Answer

$\mathrm{CH_2O}$

Question 4

Which of the following compounds is most likely to conduct electricity when dissolved in water?

Accepted Answer

Sodium chloride ($\mathrm{NaCl}$)

Question 5

A compound contains only sodium and chlorine. What is the correct name for this compound?

Accepted Answer

Sodium chloride

Question 6

Which of the following is the correct formula for magnesium chloride?

Accepted Answer

$\mathrm{MgCl_2}$

Question 7

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

Accepted Answer

Iron(III) oxide

Question 8

Which of the following is a correct Lewis structure for $\mathrm{CO_2}$?

Accepted Answer

O=C=O, with each O having two lone pairs

Question 9

Which molecule has a bent molecular geometry?

Accepted Answer

$\mathrm{H_2O}$

Question 10

What is the bond angle in a molecule with a tetrahedral geometry?

Accepted Answer

$109.5^\circ$

Question 11

Which of the following molecules is polar?

Accepted Answer

$\mathrm{NH_3}$

Question 12

Which statement about electronegativity is correct?

Accepted Answer

Electronegativity increases across a period and decreases down a group.

Question 13

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

Accepted Answer

$\mathrm{(NH_4)_2SO_4}$

Question 14

What is the formal charge on the oxygen atom in the hydroxide ion ($\mathrm{OH^-}$)?

Accepted Answer

$-1$

Question 15

Which of the following is a correct statement about resonance structures?

Accepted Answer

Resonance structures are different possible Lewis structures for the same molecule, and the true structure is a hybrid of them.

Question 16

Which of the following molecules has a linear geometry?

Accepted Answer

$\mathrm{CO_2}$

Question 17

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

Accepted Answer

Dinitrogen pentoxide

Question 18

Which of the following is a property of ionic compounds?

Accepted Answer

They conduct electricity when dissolved in water.

Question 19

Which of the following is the correct formula for calcium nitrate?

Accepted Answer

$\mathrm{Ca(NO_3)_2}$

Question 20

Which of the following statements about polar covalent bonds is correct?

Accepted Answer

Electrons are shared unequally, resulting in partial charges on the atoms.

Bonding, Molecular Structure, and Shapes: General Chemistry Chapters 7-8 Study Guide

Study Guide - Practice Questions