Question 1

Which of the following best describes the process by which a sodium atom becomes a sodium ion?

Accepted Answer

It loses one electron to achieve a stable octet.

Question 2

What is the correct formula for the compound formed between magnesium ions and chloride ions?

Accepted Answer

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

Question 3

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

Accepted Answer

$$\mathrm{Cl^-}$$

Question 4

What is the name of the compound with the formula $$\mathrm{FeO}$$, given that iron can have variable charges?

Accepted Answer

Iron(II) oxide

Question 5

Which of the following correctly represents the electron arrangement for a magnesium ion ($$\mathrm{Mg$$^{2+}$$}$$)?

Accepted Answer

$$2,8$$

Question 6

What is the correct name for the compound $$\mathrm{Cu_2S}$$, considering copper's variable charge?

Accepted Answer

Copper(I) sulfide

Question 7

Which of the following is the correct formula for tin(IV) chloride?

Accepted Answer

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

Question 8

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

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 9

Which of the following best describes the bonding in a molecule of $$\mathrm{H_2O}$$?

Accepted Answer

Covalent bonds between hydrogen and oxygen

Question 10

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

Accepted Answer

Calcium nitrate

Question 11

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

Accepted Answer

$$\mathrm{Na_3PO_4}$$

Question 12

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

Accepted Answer

Tin(II) sulfate

Question 13

Which of the following ions is a polyatomic ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 14

What is the correct formula for magnesium nitrate?

Accepted Answer

$$\mathrm{Mg(NO_3$)_2}$$

Question 15

Which of the following best explains why sodium forms a $$+1$$ ion and magnesium forms a $$+2$$ ion?

Accepted Answer

Sodium has one valence electron and magnesium has two valence electrons.

Question 16

Which of the following is the correct name for $$\mathrm{K_2SO_4}$$?

Accepted Answer

Potassium sulfate

Question 17

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

Accepted Answer

$$\mathrm{Cu_2O}$$

Question 18

Which of the following is the correct name for $$\mathrm{Al_2$(SO_4$)_3}$$?

Accepted Answer

Aluminum sulfate

Question 19

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

Accepted Answer

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Question 20

Which of the following is the correct formula for nickel(III) oxide?

Accepted Answer

$$\mathrm{Ni_2O_3}$$

Ionic and Molecular Compounds: Structure, Naming, and Formulas

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