Run the \"States of Matter\" simulation from http://phet.colorado.edu/en/simulat

Question

Run the "States of Matter" simulation from http://phet.colorado.edu/en/simulation/legacy/states-of-matter Choose the "Solid, Liquid, Gas" tab. It should display an approximately square "crystal" of solid neon. Note that the initial temperature is 13K. Experiment with the simulation until you see everything that is going on. Then click the "Reset All" button to return to the initial state of solid neon at 13K.

Slowly increase the temperature (using the "Heat | Cool" slider control) to 26K.

As you do this, CHOOSE ONE of the statements below that best describe the effect of increasing the temperature

a. The individual atoms stop moving

b. The average size of the crystal decreases

c. The crystal begins to rotate, faster as the temperature increases

d. The crystal completely melts as soon as the temperature starts to change.

e. The average size of the crystal increases

Explanation / Answer

I think that best affirmation that describe the effect is the option d. You can see how as that you heat crystal the atoms not stop vibrating, unlike vibrating with most intensity while temperature rise does that they win more energy, reaching change to the liquid state.

If you have any question please let me know in the comments

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