At constant pressure, a gas expands when heated because:

  1. the container shrinks
  2. gravity weakens
  3. the molecules grow
  4. faster molecules need more space to keep the same collision rate per unit area
Answer

D) faster molecules need more space to keep the same collision rate per unit area

V ∝ T at constant p. SLO P-11-C-09 · Understanding

Physics MCQ · More Kinetic Theory and First Law of Thermodynamics MCQs · Practise