Question

Which sequence represents the relationship between temperature and volume as explained by the kinetic-molecular theory?
higher temperature / more kinetic energy / more space between particles / higher volume
higher temperature / less kinetic energy / less space between particles/ higher volume
higher temperature / more kinetic energy / less space between particles / lower volume
higher temperature / less kinetic energy / more space between particles / lower volume

Answer 1

The answer is: higher temperature/ more kinetic energy/ more space between particles/ higher volume

Answer 2

Answer: higher temperature / more kinetic energy / more space between particles / higher volume.

Explanation:

1) One postulate of the kinetic theory is that the average kinetic energy of gas particles is proportional to the absolute temperature of the gas.

That means that the higher temperature, the higher the kinetic energy of the molecules, which is the start of the sequence of the relationship between temperature and volume.

2) Since average kinetic energy is proportional to the square of the speed, KE = [1/2] mass × (speed)², it follows that at higher the kinetic energy the faster the molecules will move.

3) By moving faster, the particles will collide more frequently so they will move away from each other, occupying more space.

4) More space between the molecules, is more volume.

So, the sequence is complete: higher temperature → higher kinetic energy (higher speed) → more space → more volume.