1) Which postulate of kinetic molecular theory best accounts for the fact that gases can be compressed easily?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between gas molecules are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.
2) Which postulate of kinetic molecular theory best accounts for the fact that gases quickly and completely fill any container?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between gas molecules are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.
3) Which postulate of kinetic molecular theory best accounts for the fact that a gas does not condense to a liquid if left at a constant temperature and pressure?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between gas molecules are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.
4) Which postulate of kinetic molecular theory best accounts for the fact that gases at standard temperature and pressure easily mix completely with other gases?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between gas molecules are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.
5) Which postulate of kinetic molecular theory best accounts for the fact that a gas sample never settles to the bottom of a container?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between gas molecules are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.
6) Which postulate of kinetic molecular theory best accounts for the fact that gases can escape through a pinhole faster at higher temperatures?
(a) A gas is composed of molecules whose size is much smaller than the distances between them.
(b) Gas molecules move randomly at various speeds and in every possible direction.
(c) Except when molecules collide, forces of attraction and repulsion between them are negligible.
(d) When collisions occur, they are elastic.
(e) The average kinetic energy of gas molecules is proportional to the absolute temperature.