P3 - Particle Motion In Gases

What causes the pressure of a gas?

The pressure of a gas is caused by particles colliding with the walls of the container.

How can gas pressure be increased?

By increasing the number of collisions per second or increasing the energy of each collision.

What happens to gas particles when temperature increases?

The particles gain more kinetic energy and move faster.

How is the temperature of a gas related to particle energy?

Temperature is directly related to the average kinetic energy of the gas particles.

What happens to the pressure of a gas when temperature increases (at constant volume)?

The pressure increases because particles collide more frequently and with greater force.

What happens to pressure when gas is at a low temperature?

Pressure is lower because particles have less kinetic energy and collide less often and with less force.

What happens to pressure when gas is at a high temperature?

Pressure is higher because particles have more kinetic energy, so they collide more often and with more force.

What motion do particles in a gas move in?

Particles in a gas move in constant, random motion.

Why do higher energy collisions increase gas pressure?

Because each collision transfers more momentum to the container walls, increasing the total force.