Question 1

Which of the following best describes the type of elements that form ionic compounds?

Accepted Answer

Ionic compounds are formed from metals and nonmetals.

Question 2

What is the correct formula for the ionic compound formed between sodium and chlorine?

Accepted Answer

$$\mathrm{NaCl}$$

Question 3

Which of the following properties is NOT typical of ionic compounds?

Accepted Answer

Soft and malleable in solid state

Question 4

When sodium reacts with chlorine to form sodium chloride, what happens to the electrons?

Accepted Answer

Sodium loses electrons to chlorine.

Question 5

Which of the following species has the most ionic character?

Accepted Answer

$$\mathrm{SrO}$$

Question 6

Why do ionic compounds conduct electricity when dissolved in water?

Accepted Answer

The ions are free to move and carry charge.

Question 7

Which of the following best explains why ionic compounds are brittle?

Accepted Answer

Shifting layers cause like charges to repel, breaking the structure.

Question 8

Which of the following has properties most similar to sodium chloride ($$\mathrm{NaCl}$$)?

Accepted Answer

$$\mathrm{KBr}$$

Question 9

What is the main attractive force that holds ions together in an ionic compound?

Accepted Answer

Electrostatic attraction between oppositely charged ions

Question 10

Which of the following statements about ionic bonding is correct?

Accepted Answer

Electrons are transferred from a metal to a nonmetal.

Question 11

A student dissolves table salt ($$\mathrm{NaCl}) in $$water. What is the best explanation for why the solution conducts electricity?

Accepted Answer

The $$\mathrm{Na^+}$$ and $$\mathrm{Cl^-}$$ ions are free to move and carry charge.

Question 12

Which of the following is a key difference between ionic and covalent compounds?

Accepted Answer

Ionic compounds involve electron transfer, while covalent compounds involve electron sharing.

Question 13

Which of the following best describes the physical state of most ionic compounds at room temperature?

Accepted Answer

Solid

Question 14

Which of the following compounds would you expect to have the highest melting point?

Accepted Answer

$$\mathrm{NaCl}$$

Question 15

Which of the following is the correct definition of an anion?

Accepted Answer

A negatively charged ion

Question 16

Which of the following best explains why metals tend to form cations?

Accepted Answer

Metals have few valence electrons and lose them easily.

Question 17

A compound is formed from magnesium and oxygen. What is its formula?

Accepted Answer

$$\mathrm{MgO}$$

Question 18

Which of the following is NOT a property of ionic compounds?

Accepted Answer

They have low melting points.

Question 19

Which of the following best describes the process of forming an ionic bond?

Accepted Answer

Electrons are transferred from a metal to a nonmetal.

Question 20

Which of the following compounds is most likely to be brittle and have a high melting point?

Accepted Answer

$$\mathrm{NaCl}$$

Ionic Compounds and Their Properties: GOB Chemistry Study Notes

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