AP Chemistryeasymcq1 pt
Why does water have high surface tension?
A.Strong hydrogen bonding between molecules
B.Its low molar mass
C.Its high density
D.Dissolved oxygen
Explanation
Core Concept
Molecules at the surface feel a net inward pull from neighbors below. Hydrogen bonding makes that pull strong, so the surface resists stretching — the origin of surface tension.
Correct Answer
AStrong hydrogen bonding between molecules
More Unit 3: Intermolecular Forces and Properties practice questions
- hardA solution's concentration is 2.0 M. Which statement about the solution is true?
- hardWhich change lowers the solubility of CO₂ in a sealed soda bottle?
- hardA 3.0 L sample of gas at 400 K and 2.0 atm is compressed to 1.0 L at constant temperature. What is the new pressure?
- hardWhich observation shows that the particles of a solution are smaller than those of a suspension?
- hardWhich pair would require the most energy to separate: the same liquid's molecules at its boiling point or at room temperature?
Practice more AP Chemistry questions with full explanations
Practice Unit 3: Intermolecular Forces and Properties Questions →