Question 1

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between two nonmetal atoms.

Question 2

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

Accepted Answer

Dinitrogen pentoxide

Question 3

Given the name 'carbon tetrachloride,' what is its chemical formula?

Accepted Answer

$$\mathrm{$$CCl_4$$}$$

Question 4

Which of the following compounds is ionic?

Accepted Answer

$$\mathrm{KCl}$$

Question 5

What is the correct Lewis structure for $$\mathrm{NH_3$} ($$ammonia)?

Accepted Answer

Nitrogen with three single bonds to hydrogen and one lone pair on nitrogen.

Question 6

Which molecule contains a double bond?

Accepted Answer

$$\mathrm{O_2$}$$

Question 7

What is the molecular shape of $$\mathrm{H_2O}$$ according to VSEPR theory?

Accepted Answer

Bent

Question 8

Which of the following molecules is nonpolar?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 9

What is the main intermolecular force present in liquid $$\mathrm{CH_4$} ($$methane)?

Accepted Answer

Dispersion forces

Question 10

Which of the following statements about electronegativity is correct?

Accepted Answer

Electronegativity increases from left to right across a period.

Question 11

A molecule of $$\mathrm{SO_2$} is $$best described as:

Accepted Answer

Polar with a bent shape

Question 12

Which of the following compounds exhibits hydrogen bonding?

Accepted Answer

$$\mathrm{H_2O}$$

Question 13

What is the correct formula for diphosphorus pentoxide?

Accepted Answer

$$\mathrm{P_2O_5}$$

Question 14

Which of the following best explains why $$\mathrm{CO_2$} is $$nonpolar even though it contains polar bonds?

Accepted Answer

The molecule is linear and the dipoles cancel each other out.

Question 15

Which of the following has the highest melting point?

Accepted Answer

An ionic compound

Question 16

What is the correct name for $$\mathrm{$$NCl_3$$}$$?

Accepted Answer

Nitrogen trichloride

Question 17

Which of the following molecules has a trigonal pyramidal shape?

Accepted Answer

$$\mathrm{NH_3$}$$

Question 18

A bond with an electronegativity difference of 1.0 is classified as:

Accepted Answer

Polar covalent

Question 19

Which of the following best describes the bonding in $$\mathrm{H_2$}$$?

Accepted Answer

A single covalent bond formed by sharing two electrons

Question 20

Which of the following is a correct statement about the octet rule?

Accepted Answer

Hydrogen requires only two electrons to achieve a noble gas configuration.

Molecular Compounds, Lewis Structures, Bond Polarity, and Intermolecular Forces

Study Guide - Practice Questions