Which statement about liquids is INCORRECT?
Correct answer: C. The molecules of a liquid are held in fixed positions
- A. Liquids diffuse more slowly than gases
- B. Liquids are almost incompressible
- C. The molecules of a liquid are held in fixed positions
- D. Liquids have a definite volume but no definite shape
Explanation
Molecules in a liquid are in constant random motion and slide freely past one another, which is exactly what allows a liquid to flow and to diffuse, however slowly. Fixed positions belong to the solid state. The other three statements are all correct, and incompressibility follows from the molecules already being nearly in contact.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
Practise Liquids
350 free Liquids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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