Question 1

Which of the following best describes the difference between ionic and covalent bonds?

Accepted Answer

Ionic bonds form when valence electrons are transferred from one atom to another, while covalent bonds form when valence electrons are shared between atoms.

Question 2

Which of the following compounds contains a polyatomic ion?

Accepted Answer

NaNO$$_3$$

Question 3

What is the correct formula for magnesium nitride?

Accepted Answer

Mg$$_3N$_2$$

Question 4

Which of the following ions is isoelectronic with neon (Ne)?

Accepted Answer

Na$$^+$$

Question 5

A compound is formed between cesium (Cs) and bromine (Br). What are the charges on the ions formed?

Accepted Answer

Cs$$^+$$ and Br$$^-$$

Question 6

Which of the following is the correct name for FeCl$$_3$$?

Accepted Answer

Iron(III) chloride

Question 7

What is the total number of valence electrons in a molecule of methane (CH$$_4$$)?

Accepted Answer

$$4 + 4 = 8$$

Question 8

Which of the following is a correct Lewis dot structure for water (H$$_2O$$)?

Accepted Answer

O with two single bonds to H and two lone pairs on O

Question 9

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

Accepted Answer

Al$$_2(CO$_3$$)$$_3$$

Question 10

Which of the following is a diatomic element?

Accepted Answer

Nitrogen (N$$_2)$$

Question 11

What is the correct name for the compound SF$$_6$$?

Accepted Answer

Sulfur hexafluoride

Question 12

Which of the following is the correct formula for sodium acetate?

Accepted Answer

NaCH$$_3$$COO

Question 13

Which of the following statements about electrolytes is true?

Accepted Answer

Electrolytes are ions dissolved in water that conduct electricity.

Question 14

Which of the following is the correct Lewis dot structure for ammonia (NH$$_3$$)?

Accepted Answer

N with three single bonds to H and one lone pair on N

Question 15

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

Accepted Answer

Dinitrogen monoxide

Question 16

Which of the following ions has the same number of electrons as F$$^-$$?

Accepted Answer

Ne

Question 17

What is the correct formula for lithium hydroxide?

Accepted Answer

LiOH

Question 18

Which of the following compounds is covalent?

Accepted Answer

CO$$_2$$

Question 19

How many bonding pairs and nonbonding pairs of electrons are present in a molecule of water (H$$_2O$$)?

Accepted Answer

2 bonding pairs, 2 nonbonding pairs

Question 20

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

Accepted Answer

CaBr$$_2$$

Ionic and Covalent Compounds: Structure, Bonding, and Properties

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