Studied by 4 peopleSolid
Closely packed particles are always in ___
Liquids
Particles not tightly held in ___
Gases
Particles further apart in ____
Melting point
_the constant temperature where pure solid changes to liquid
Boiling point
_the constant temperature where pure liquid changes to gas
Sublimation
_direct change of solid to gas
diffusion
___the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
Note 
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