Brown Out Classroom Module Program

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Brown Out Classroom Module Program K-12
Educational Outreach CONTACT http//www.brown.ed
u/CAMR OUTREACH
Brown University Center for Advanced Materials
Research
Freezing Point Depression
Presented by Rachel Puda Spring 2004
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Freezing Point Depression
(This section for younger students)
Phases of Mater Solid, Liquid and Gas.
Waters Phases
Solid Ice Liquid Water Gas Water Vapor
Two phases of water in a glass
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Phase Changes for Water
As temperature changes the water changes phases
Ice turns to water at 0 degrees Celsius and water
turns to water vapor at 100 degrees Celsius.
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We can experimentally find the temperature at
which water boils and at which ice melts.
Now we can find if salt changes these
temperatures.
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5
If water freezes at 0 degrees Celsius and ice
cream freezes at 2 degrees Celsius can we find a
way to freeze ice cream?
Ice Cream Ingredients 1/4 cup whole milk 1/4 cup
whipping cream 1/8 cup sugar 1/8 teaspoon vanilla