Title: Interactive Simulation - Quick Check Part 1

Heat Transfer effect on Particle speed

Q: Cooling the system is equivalent to having a net Qout or -Q.

When you take heat of out of the system what happens to the particle speed?
- On average, the particles slow down. (correct)
- On average, the particles speed up.
- The particles remain at the same speed.

Pressure

Q: Cooling the system is equivalent to having a net Qout or -Q.

When you take heat of out of the system what happens to the pressure of the system?
- The pressure decreases. (correct)
- The pressure increases.
- The pressure remains the same.

Pressure Definition

Choose the correct statement.

- Pressure is a measure of the force exerted by the particles colliding with the walls of the system which is proportional to the average particle speed. (correct)
- Pressure is a measure of the force exerted by the particles colliding with the walls of the system which is inversely proportional to the average particle speed.
- Pressure is a measure of the force exerted by the particles colliding with the walls of the system which is independant from the average particle speed.
  Hint: Think about what happens when you descreased the temperature of the system, and the particles slowed down. What happened to the pressure in this case?

Volume

Q: Increasing the volume of the system led to an increase in average particle velocity.
A: false

Changing the volume of the system has a direct impact on the particle velocity. In fact, with more volume and space to travel, the occurence of collisions between particles is less frequent. What would this lead to?

Volume effect On Pressure

Q: What happened to the pressure when you decreased the system volume?
- The pressure increased. (correct)
- The pressure decreased.
- The pressure remained the same.

Q: Why would the pressure increase with a decrease in system volume?
- A decrease in volume leads to an increase in the chance for collisions between particles. (correct)
- A decrease in volume leads to an increase in temperature, increasing particle velocity.
- A decrease in volume adds energy to the system, increasing particle velocity.