Kinetic Energy, State of Matter
Date: Spring 2010
If you double the kinetic energy of ice, does it go from a
solid to liquid, solid to gas, or solid to a solid? And how can you tell?
This would depend entirely on what the kinetic energy of the ice was to
begin with. If you double 1 you get 2, but if you double 1000, you get
2000 - big difference there.
Whether solid water changes to gaseous or liquid water, or remain solid,
depends on what the initial temperature and pressure are. Look up a "phase
diagram" - here's one from wikipedia: http://en.wikipedia.org/wiki/File:
Phase-diag2.svg Note that if you are in the solid phase (left side of the
graph) and change the temperature (assuming this is the effect of
"doubling the kinetic energy") then you could end up in the gaseous
phase (bottom right) the liquid phase (top right) or remain in the
solid phase if the temperature was low enough to begin with.
Greg (Roberto Gregorius)
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Update: June 2012