Instructions
1) Go to this link: https://phet.colorado.edu/sims/html/states-of-matter-basics/latest/states-of-matter-basics_all.html
2) Click on States
3) Select Gas
4) Observe the particle motion for a minute or two.
5) Then answer the questions below.
What causes the gas particles to change direction? Name TWO ways this happens.
What do you notice about the speeds of the molecules?
What do you observe when the temperature changes?
What's different about the movement of water molecules compared to argon atoms?
How can you use the motions of the gas particles to explain why
gases expand on heating and contract on cooling?
Select all that is true for the gas particle motion