Chapter 3. Section 2 Changes of State. I. Changes Between S olid a nd Liquid. Melting – change in phase from a solid to a liquid. 1. Particles move fast enough to break free from their fixed positions. 2. Can be useful in identifying an unknown substance.
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Changes of State
1. Particles move fast enough to break free from their fixed positions.
2. Can be useful in identifying an unknown substance.
a. In Denver, water boils at 95 degrees Celsius (203 degrees F)
1. Occurs on a solid structure (glass, leaf, dust particle)
2. In clouds, tiny droplets of water form and stay afloat until they get heavy enough to fall.
1. Dry ice (frozen CO2)
The reverse of sublimation is “deposition”