Phase Changes Flashcards
What is another term for melting?
fusion
What is fusion?
solid to liquid
What is another term for boiling?
vaporization
What is vaporization?
liquid to gas
What is sublimation?
solid to gas
What is the connecting characteristic of fusion, vaporization, and sublimation?
They consume heat, ENDOthermic
H>0
S>0
**All molecules are changing to a state where are they are LESS organized
What is crystallization?
liquid to solid
What is condensation?
gas to liquid
What is deposition?
gas to solid
What is the connecting characteristic of crystallization, condensation, and deposition?
They produce heat. EXOthermic
H<0
S<0
** All molecules become MORE organized
- Delta H is endothermic or exothermic?
exothermic, produces heat,
H<0
+ Delta H is endothermic or exothermic?
endothermic, consumes heat, H>0
What are the 4 physical state subscript notation?
(s) = solid or solid precipitate
(g) = gas
(l) = liquid
(aq) = aqueous, dissolved in water
