Question 1

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

Accepted Answer

Ionic bonds involve the transfer of electrons from a metal to a nonmetal, resulting in oppositely charged ions that attract each other. Covalent bonds involve the sharing of electrons between two nonmetals.

Question 2

An atom of magnesium (Mg) has an atomic number of 12. If it loses two electrons, what is the resulting charge of the ion?

Accepted Answer

$2+$

Question 3

Which element would need to gain two electrons to achieve a full octet?

Accepted Answer

Oxygen

Question 4

What is the correct formula for the ionic compound formed between calcium and bromine?

Accepted Answer

$\mathrm{CaBr_2}$

Question 5

Which of the following is the correct name for the compound $\mathrm{K_2O}$?

Accepted Answer

Potassium oxide

Question 6

A neutral atom of chlorine has 17 protons and 17 electrons. If it gains one electron, what is the resulting ion called?

Accepted Answer

Anion

Question 7

Which of the following compounds contains a polyatomic ion?

Accepted Answer

$\mathrm{Al(HCO_3)_3}$

Question 8

What is the correct formula for iron(III) oxide?

Accepted Answer

$\mathrm{Fe_2O_3}$

Question 9

Which of the following is the correct name for $\mathrm{CO_2}$?

Accepted Answer

Carbon dioxide

Question 10

How many valence electrons does an atom in group 7A (17) have?

Accepted Answer

7

Question 11

Which of the following best explains why sodium chloride (NaCl) is stable, even though sodium is explosive and chlorine is poisonous?

Accepted Answer

The ionic bond between sodium and chlorine results in a stable electron configuration for both ions.

Question 12

What is the correct formula for the compound formed between aluminum and carbonate?

Accepted Answer

$\mathrm{Al_2(CO_3)_3}$

Question 13

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

Accepted Answer

Dinitrogen pentoxide

Question 14

A compound is formed between magnesium and oxygen. What is the correct formula and name for this compound?

Accepted Answer

$\mathrm{MgO}$, magnesium oxide

Question 15

Which of the following is a characteristic of covalent bonds?

Accepted Answer

They are typically formed between nonmetals and involve the sharing of electrons.

Question 16

What is the charge on the iron ion in iron(II) chloride?

Accepted Answer

$2+$

Question 17

Which of the following formulas represents a molecule with a triple covalent bond?

Accepted Answer

$\mathrm{N_2}$

Question 18

A compound contains the ammonium ion and oxide ion. What is its correct formula?

Accepted Answer

$\mathrm{(NH_4)_2O}$

Question 19

Which of the following is the correct name for $\mathrm{P_2O_5}$?

Accepted Answer

Diphosphorus pentoxide

Question 20

If a neutral atom has 15 protons and 16 electrons, what is its charge and classification?

Accepted Answer

$1-$, anion

Bonding and Naming in Chemistry: Types of Bonds, Valence Electrons, and Ionic vs. Covalent Compounds

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