(air) density and molecules
If a substance is heated or cooled, do the molecules expand or contract to any degree? If so does that contribute significantly to the overall density of the material?
Or is the density related more to the increased/decreased motion of the molecules, and therefore the collisions between them, therefore taking more/less space?
If it makes any difference, I'm interested in air density in particular.
Mike
Last edited by mstram; 14th July 2004 at 23:28.