Particle Motion In Gases (GCSE Physics)

Which best explains Brownian motion observed for small pollen grains in water as evidence for particle motion?

Which change will NOT increase gas pressure in a fixed container?

Which process best describes diffusion of a gas?

At constant temperature, what happens to the pressure of a fixed mass of gas if the volume is halved?

Why does a pressure cooker cook food faster than an open pot at the same heat source?

Why does increasing temperature cause a gas to exert more pressure on its container (if volume is fixed)?

Why do gases exert pressure even though individual molecules are tiny compared with the container?

If two gases at the same temperature have different molecular masses, how do their root mean square speeds compare?

Why does a rising balloon balloon`s internal gas particles not instantly escape even though collisions happen at the surface?

Which practical observation supports the particle model explanation for gas pressure?

If the temperature of a gas is increased while the container is allowed to expand so pressure stays constant, what happens to the average speed of the gas particles?