Darynelis

1. Problem: How to make Hot Ice.
2. Hypothesis: By mixing these two ingredients, the baking soda and the vinegar you could make a scientific reaction in which crystals are formed.

3.Procedure

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3.a Add 2 cups of vinegar to a large bowl.
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3.b Slowly add 2 leveledtablespoons of baking soda to the bowl. In order to keep the fizzing under control keep stirring. Once you’re finished, you are left with a solution of sodium acetate, water, dissolved carbon dioxide, andprobably a little left over vinegar.
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3.c Put the solution in the saucepan and boil it down.
-------------------------------------------------3.d Now watch the surface carefully. Once you see a crust and the color changing into amber remove the substance from the heat.
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3.e Pour themixture into a large dish and let it sit undisturbed for about a half hour or refrigerate to chill.
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3.f By placing a little bit of the solid substanceor touching the substance you should set off the crystallization process.
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3.g Pour off any excess water and let the crystals dry
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Observation: This is a laboratory substance. The information that we had wasn’t specific enough regarding measurements and boiling time. We achieved theamber color and the solid crust (the crystals formed) which was part of the experiment. The part that didn’t work out was the reaction that were supposed to see when touching the acetate sodium.-------------------------------------------------

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Reference: http://chemistry.about.com/od/homeexperiments/a/make-hot-ice-sodium-acetate.htm...