Solubility and Chemical Reactions Quiz

What does the phrase "like dissolves like" mean?

• Opposites attract

• Polar dissolves nonpolar

• Polar dissolves polar, nonpolar dissolves nonpolar

• Water dissolves everything

Which of these will dissolve in water?

• Oil

• Gasoline

• Sugar

• Plastic

Why doesn’t oil dissolve in water?

• Oil is polar

• Oil is solid

• Oil is nonpolar, and water is polar

• Water is too hot

What is solvation?

• Melting a solid

• A chemical reaction

• Solvent particles surrounding solute particles

• Heating a solution

What happens first when an ionic compound like NaCl is added to water?

• It turns to gas

• Water molecules explode

• Water surrounds the Na⁺ and Cl⁻ ions

• Water becomes acidic

What type of attraction occurs between water molecules and ions?

• Covalent

• Ion–dipole

• Metallic

• Hydrogen

What makes water good at dissolving ionic compounds?

• It is cold

• It is nonpolar

• It has weak bonds

• It is polar and can attract ions

Why doesn’t gypsum (CaSO₄·2H₂O) dissolve well in water?

• It's too heavy

• Water is nonpolar

• Its ionic bonds are too strong

• It reacts with water

What type of molecule is table sugar (sucrose)?

• Nonpolar

• Acidic

• Polar

• Ionic

What helps sugar dissolve in water?

• Covalent bonds

• Ionic bonds

• Hydrogen bonds with water

• Boiling the sugar