Question 1

Which statement best describes a solution?

Accepted Answer

A homogeneous mixture of two or more substances.

Question 2

In an aqueous solution, which component is present in the greater amount?

Accepted Answer

Solvent

Question 3

What is the term for the lesser amount component that is dissolved in a solution?

Accepted Answer

Solute

Question 4

Which of the following best explains why water is a polar molecule?

Accepted Answer

Water has a bent structure and oxygen is more electronegative than hydrogen.

Question 5

What type of intermolecular force is responsible for water's high surface tension?

Accepted Answer

Hydrogen bonding

Question 6

Which principle explains why NaCl dissolves in water but oil does not?

Accepted Answer

Like dissolves like

Question 7

What is the main reason water cannot dissolve most nonpolar compounds?

Accepted Answer

Water is polar and cannot form strong interactions with nonpolar molecules.

Question 8

Which of the following is an example of an electrolyte solution?

Accepted Answer

NaCl dissolved in water

Question 9

Why do ionic compounds like NaCl conduct electricity when dissolved in water?

Accepted Answer

They dissociate into ions that can move freely.

Question 10

Which of the following statements about covalent compounds in solution is correct?

Accepted Answer

They do not dissociate into ions and do not conduct electricity.

Question 11

A student mixes 10 g of sugar in 100 mL of water. What is the solute in this solution?

Accepted Answer

Sugar

Question 12

Which equation correctly represents the dissociation of NaCl in water?

Accepted Answer

$$\mathrm{NaCl_{(s)} \rightarrow Na^+_{(aq)} + Cl^-_{(aq)}}$$

Question 13

Which property of water is MOST responsible for its ability to dissolve ionic compounds?

Accepted Answer

Its polarity

Question 14

Which of the following best describes a non-electrolyte solution?

Accepted Answer

A solution that does not contain ions and does not conduct electricity.

Question 15

Which of the following is a correct representation of a hydrogen bond in water?

Accepted Answer

$$\mathrm{O-H \cdots O}$$

Question 16

A solution is prepared by dissolving 5 g of NaCl in 100 mL of water. Which statement is true?

Accepted Answer

Water is the solvent and NaCl is the solute.

Question 17

Which of the following best explains why oil and water do not mix?

Accepted Answer

Oil is nonpolar and water is polar.

Question 18

Which of the following is NOT a property of liquid solutions?

Accepted Answer

They contain visible particles.

Question 19

Which of the following best describes the structure of a water molecule?

Accepted Answer

Bent with a bond angle of approximately $$104.5^\circ$$

Question 20

Which of the following is a real-world example of a non-electrolyte solution?

Accepted Answer

Sugar dissolved in water

Solutions and Properties of Water: General Chemistry Study Notes

Guida di studio - Domande di pratica