Question 1

Which of the following best describes an ionic bond?

Accepted Answer

A bond formed by transferring electrons from a metal to a nonmetal.

Question 2

What is the charge on the ion formed by magnesium (Mg) when it achieves a stable octet?

Accepted Answer

$$+2$$

Question 3

Which of the following compounds is most likely to be ionic?

Accepted Answer

$$\mathrm{NaCl}$$

Question 4

A neutral atom of sodium ($$\mathrm{Na}) $$has 11 protons and 11 electrons. What happens to its charge when it loses one electron?

Accepted Answer

It becomes a cation with a $$+1$$ charge.

Question 5

Which of the following best explains why ionic compounds conduct electricity when dissolved in water?

Accepted Answer

The ions are free to move and carry charge in solution.

Question 6

What is the correct formula for the compound formed between aluminum ($$\mathrm{Al$$^{3+}$$}) $$and oxygen ($$\mathrm{O$$^{2-}$$}$$)?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 7

Which of the following statements about the octet rule is correct?

Accepted Answer

Atoms react to achieve eight electrons in their outermost shell.

Question 8

Which of the following ions is an anion?

Accepted Answer

$$\mathrm{Cl^-}$$

Question 9

A student dissolves table salt ($$\mathrm{NaCl}) in $$water. Which property of ionic compounds does this demonstrate?

Accepted Answer

Ionic compounds conduct electricity in solution.

Question 10

Which of the following best describes a crystal lattice?

Accepted Answer

A regular, repeating arrangement of ions in an ionic solid.

Question 11

What is the correct name for the compound $$\mathrm{$$CaCl_2$$}$$?

Accepted Answer

Calcium chloride

Question 12

Which of the following elements will most likely form a $$-2$$ ion?

Accepted Answer

Oxygen

Question 13

Which of the following is a property of ionic compounds?

Accepted Answer

They have high melting points.

Question 14

What is the correct formula for the compound formed between lithium ($$\mathrm{Li^+}) $$and sulfur ($$\mathrm{S$$^{2-}$$}$$)?

Accepted Answer

$$\mathrm{Li_2S}$$

Question 15

Which of the following best describes a Lewis symbol for an atom?

Accepted Answer

The chemical symbol surrounded by dots representing valence electrons.

Question 16

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

Accepted Answer

Potassium sulfate

Question 17

A transition metal forms two different ionic compounds with chlorine: $$\mathrm{$$FeCl_2$$}$$ and $$\mathrm{$$FeCl_3$$}. $$What are the correct names for these compounds?

Accepted Answer

Iron(II) chloride and iron(III) chloride

Question 18

Which of the following best explains why sodium reacts with chlorine to form sodium chloride?

Accepted Answer

Sodium loses one electron and chlorine gains one electron, both achieving stable octets.

Question 19

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{SO_4$^{2-}}$$

Question 20

Which of the following best describes the criss-cross method for writing ionic compound formulas?

Accepted Answer

The charges of the ions are swapped and used as subscripts for the other ion.

Ionic Compounds and Chemical Bonding: Structure, Formation, and Properties

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