Ch. 2Sec. 2

Changes of State

change of state

description

melting solid liquid

freezing liquid solid

vaporization liquid gas

evaporation • type of vaporization • takes place only on surface of liquid

boiling • type of vaporization• takes place throughout liquid

condensation gas liquid

sublimation solid gas

melting • solid liquid

• thermal energy added particles move faster

melting point• specific temp. @

which substance melts

• melting point of pure water = 0oC

• characteristic property

freezing

• liquid solid

• opposite of melting

vaporization

• liquid gas

• thermal energy added particles move faster

• 2 types:

1. evaporation

2. boiling

boiling

• liquid gas

boiling point

• temp. @ which liquid boils

• used to identify unknown substances

evaporation• liquid gas

condensation

•opposite of vaporization

•when particles in a gas lose enough energy to become a liquid

sublimation• change of state from solid directly gas

dry ice = solid carbon dioxide

# INGREDIENT1-5 Box of rock salt

6-18 Quart of whole milk19-20 Box of vanilla extract21-26 2 lb bag of sugar27-30 Box of gallon size

FREEZER BAGS (30+)31-33 Box of quart size

FREEZER BAGS (30+)

HOMEMADE ICE CREAM

Recipe for homemade ice creamIngredients:• 1 cup of whole milk • 2 tbl. of rock salt or 1/4 cup table salt• 2 tbl. of sugar• 1 tsp. vanilla extract• 2 cups of ice• 2-heavy duty (freezer) quart size ziploc bags• 2-heavy duty (freezer) gallon size ziploc bags

Directions1. Put ice and rock salt into the gallon size ziploc bag. Double bag. 2. Pour the sugar, milk and vanilla into the quart size bag. Double bag.3. Seal the quart size bag. Remove air. 4. Place quart size bag inside the gallon size bag. Seal the bag.

Remove air.5. Shake the bag for about 15 minutes until mixture begins to solidify. 6. Enjoy!