2 changes in state
-
Upload
valerie-evans -
Category
Education
-
view
448 -
download
0
Transcript of 2 changes in state
Changes in StateChanges in State
Changes in StateChanges in State
3 Ways State of Matter 3 Ways State of Matter ChangesChanges
-Evaporation-Evaporation-Sublimation-Sublimation-Condensation-Condensation
EvaporationEvaporation
When liquid changes to When liquid changes to a gas when the a gas when the temperature is above the temperature is above the boiling pointboiling point
100100°C, 212°F or 373 K°C, 212°F or 373 K
Evaporation PicturesEvaporation Pictures
SublimationSublimation
When a solid changes When a solid changes directly to a gas without directly to a gas without going through the liquid going through the liquid state.state.
Sublimation PicturesSublimation Pictures
CondensationCondensation
When a gas changes to When a gas changes to a liquid when cooled to a liquid when cooled to or below the boiling or below the boiling point.point.
Condensation PicturesCondensation Pictures
Heat/EnergyHeat/Energy
Joules- measurement of Joules- measurement of energy (like calories).energy (like calories).
4.184 calories= 1 Joule4.184 calories= 1 Joule1000 Joules= 1 kJ 1000 Joules= 1 kJ
(kiloJoule)(kiloJoule)
Heat of FusionHeat of Fusion
Amount of energy Amount of energy needed to change from a needed to change from a solid to a liquid. The solid to a liquid. The heat of fusion for water is heat of fusion for water is 334 kJ/kg.334 kJ/kg.
Heat of fusionHeat of fusion
Heat of VaporizationHeat of Vaporization
Amount of energy Amount of energy needed to change from needed to change from liquid to a gas. The heat liquid to a gas. The heat of vaporization of water of vaporization of water is 2260 kJ/kg.is 2260 kJ/kg.
Which requires Which requires lessless energy? energy?
Water going from a solid Water going from a solid to a liquid.to a liquid.
ORORWater going from a Water going from a liquid to a gas.liquid to a gas.