click below
click below
Normal Size Small Size show me how
Kelley Chem - U3-3
Terms | Definitions |
---|---|
solid | fixed shape and volume |
liquid | fixed volume but not a fixed shaped |
gas | neither a fixed volume nor a fixed shape |
melting point | temperature at which a solid melts to a liquid |
melting point of water | 0 degrees Celsius |
freezing point | temperature at which a liquid freezes into a solid |
freezing point of water | 0 degrees Celsius |
boiling point | temperature at which a liquid turns to a gas |
condensation | process of gas changing to a liquid |
evaporation | when molecules from the surface of a liquid turn to gas - need not be boiling |
sublimation | process of a solid directly becoming a gas |
deposition | a gas becomes a solid without becoming a liquid first |
freezing | exothermic change |
melting | endothermic change |
boiling | endothermic change |
condensing | exothermic change |
sublimation | endothermic change |
evaporation | endothermic change |
endothermic | heat is required |
exothermic | heat is removed or given off |