1.2 PHET Simulation: States of Matter

Try this out!

https://phet.colorado.edu/sims/html/states-of-matter/latest/states-of-matter_en.html

Go to the above PHET simulation activity of states of matter.

1. Click on Neon and observe the motion as solid liquid and gas.  What do you notice?
2. Change the substance from Neon to Argon and click on solid, liquid and gas respectively. Both are atoms. What do you observe?
3. Now change to molecules like oxygen and water. What do you observe?
4. What do you observe when you increase or decrease the temperature of solid, liquid and gas?

Now Click on the phase change tab and press the finger to increase the pressure for solid, liquid and gas.

      5.  Which states of matter can be mostly compressed?
      6.  What do you conclude about volume and shape of three states of matter from this experiment?

Ans:

1) Solid particles are rigid with little vibration, liquid particles are slightly mobile, gas particles are moving with high speed, colliding with each other.

2) same

3) same

4) kinetic energy decreases with decreasing temp and increases with increasing with temperature

5) Gas

6) With increasing motion