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Title
Solution: The power of solutes in water.

Problem Scenario
Will Solutes affect water temperature until freezing?

Broad Question
How do solutes affect water temperature?

Specific Question
How do __different__ solutes affect water temperature until freezing?

Hypothesis
I think that solutes will slow down the freezing because solutes will be harder to freeze.

Vocabulary List That Needs Explanation
Solute - Substance (Usually powder) that dissolves in other liquids.

General Plan
1. Fill five containers with an equal amount of water. 2. Put each five solutes in a different container. 3. Stir solutes thoroughly until mixed with water. 4. Put each container (one at a time) in a freezer. 5. Check on every hour until frozen - repeat until finished with all containers.

Potential Problems And Solutions
Problems: -Freezer not cold enough -Takes over night to freeze Solutions: -Find a colder area (snow, different freezer, etc.) -Wait until morning to continue experiment. -Record results then wait for morning to continue experiment

Safety Or Environmental Concerns
-Accidental Ingestion -In face, mouth, or eyes

Experimental Design
= Controlled, manipulated experiment =

Number Of Trials:
2

Number Of Subjects In Each trial:
6

When data will be collected
After Freezing

Number of Observations:
Every hour until frozen

Where will data be collected?:
Kitchen/Freezer = Comparative Study =

Where will data be collected?:
= Descriptive Study =

Item to be described
Time it took freeze

Methods of observation
Viewing to see it's frozen

Measurements to be collected
Length of time it took to freeze water with solutes dissolved. = Innovation =

Resources and Budget Table
Resources needed: One container of __salt__: .99 - 2.00 One container of __sugar__: .99 - 2.00 One bottle of __shampoo__: 1.00 - 3.00 One container of __chocolate milk mix__: 1.99 - 2.99 One container of __Baking powder__: 2.99 __Six containers__ (empty): - 5.00 - 10.00 Enough __water__ to fill six containers: Tap (free)

Background Research
The freezing point or melting point of water is the temperature at which water changes phase from a liquid to a solid or vice versa. The freezing point describes the liquid to solid transition while the melting point is the temperature at which water goes from a solid (ice) to liquid water. In theory, the two temperatures would be the same, but liquids can be supercooled beyond their freezing points so that they don't solidify until well below freezing point. Ordinarily the freezing point of water is 0° C or 32° F. The temperature may be lower if supercooling occurs or if there are impurities present in the water which could cause [|freezing point depression] to occur. http://chemistry.about.com/od/waterchemistry/f/freezing-point-of-water.htm "What Is the Freezing Point of Water?" //About.com Chemistry//. Web. 08 Mar. 2012. .

I couldn't find anyone who tried this experiment before.