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, while covalent bonds involve the sharing of electrons between two nonmetals.

Question 2

According to the octet rule, atoms tend to:

Accepted Answer

Gain, lose, or share electrons to achieve 8 electrons in their outer shell.

Question 3

What is the correct formula for magnesium chloride?

Accepted Answer

$$\mathrm{$$MgCl_2$$}$$

Question 4

Which of the following ions is formed when a chlorine atom gains one electron?

Accepted Answer

$$\mathrm{Cl^-}$$

Question 5

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

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 6

Which of the following best describes a polyatomic ion?

Accepted Answer

A group of covalently bonded atoms with an overall ionic charge.

Question 7

What is the correct name for the compound $$\mathrm{$$FeCl_3$$}$$?

Accepted Answer

Iron(III) chloride

Question 8

Which of the following ions has a $$2+$$ charge?

Accepted Answer

$$\mathrm{Mg$$^{2+}$$}$$

Question 9

What is the correct formula for copper(I) oxide?

Accepted Answer

$$\mathrm{Cu_2O}$$

Question 10

Which of the following is the correct name for $$\mathrm{Ca(NO_3$)_2}$$?

Accepted Answer

Calcium nitrate

Question 11

A patient is given a medication containing ammonium sulfate. What is the formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 12

Which of the following compounds is most likely to have a high melting point and be solid at room temperature?

Accepted Answer

$$\mathrm{NaCl}$$

Question 13

What is the correct formula for tin(IV) chloride?

Accepted Answer

$$\mathrm{$$SnCl_4$$}$$

Question 14

Which of the following is the correct name for $$\mathrm{Na_2SO_4}$$?

Accepted Answer

Sodium sulfate

Question 15

A sample contains $$\mathrm{Mg$$^{2+}$$}$$ and $$\mathrm{PO_4$^{3-}}$$ ions. What is the correct formula for the resulting compound?

Accepted Answer

$$\mathrm{Mg_3$(PO_4$)_2}$$

Question 16

Which of the following best explains why ionic compounds are electrically neutral overall?

Accepted Answer

The total positive charge of the cations equals the total negative charge of the anions.

Question 17

What is the correct name for $$\mathrm{$$SnSO_4$$}$$?

Accepted Answer

Tin(II) sulfate

Question 18

Which of the following is a correct formula for a compound containing calcium ions and phosphate ions?

Accepted Answer

$$\mathrm{Ca_3$(PO_4$)_2}$$

Question 19

A hospital uses sodium hypochlorite as a disinfectant. Which of the following is the correct formula for sodium hypochlorite?

Accepted Answer

$$\mathrm{NaClO}$$

Question 20

Which of the following best describes the charge on an ion formed by an atom in Group 2A of the periodic table?

Accepted Answer

$$2+$$

Ionic and Molecular Compounds: Bonding, Charges, and Nomenclature

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