6.
Open the PhET States of Matter Simulation to answer thefollowing questions:
(a) Select the Solid, Liquid, Gas tab. Explore by selectingdifferent substances, heating and cooling the systems, and changingthe state. What similarities do you notice between the foursubstances for each phase (solid, liquid, gas)? What differences doyou notice?
(b) For each substance, select each of the states and record thegiven temperatures. How do the given temperatures for each statecorrelate with the strengths of their intermolecular attractions?Explain.
(c) Select the Interaction Potential tab, and use the defaultneon atoms. Move the Ne atom on the right and observe how thepotential energy changes. Select the Total Force button, and movethe Ne atom as before. When is the total force on each atomattractive and large enough to matter? Then select the ComponentForces button, and move the Ne atom. When do the attractive (vander Waals) and repulsive (electron overlap) forces balance? Howdoes this relate to the potential energy versus the distancebetween atoms graph? Explain.
