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Crazy Crystal Creations: How to Grow the Best and the Largest Crystals Materials and Equipment
* Lab notebook
* Large bowl
* Ice, enough to fill large bowl at least three times
* Water
* Thermometer
* String
* Scissors
* Pencils (3)
* Identical jars or large drinking glasses (3)
* Pot with a lid
* Borax (also called 20-Mule Team household cleaner);
* Tablespoon
* Plastic wrap, wax paper, or aluminum foil
* Gloves, latex or similar style exam glove (optional). Can be used if there is concern over handling borax Experimental Procedure
1. In this science fair project, you'll be recrystallizing borax under three different temperature conditions: in a refrigerator, at room temperature, and in an ice bath. Before you begin, make a hypothesis, based on your background reading, about how the crystals grown under each of these conditions will look. Write your hypothesis in your lab notebook. 2. Prepare an ice bath by filling the large bowl half full of ice and then adding water until the bowl is three-quarters full. a. Place the ice bath on a counter top or on a table, where it can be left undisturbed for at least 5 hours while the crystals grow. 3. As soon as the ice bath is prepared, use the thermometer to take the temperature of the ice bath, of the refrigerator, and of the room (do this by putting the thermometer on the countertop or table), and record the temperatures in your lab notebook. 4. Cut three pieces of string and tie one around each pencil. The string pieces should be of equal length and should be long enough that when the pencil is laid across the top of the jar, the end of the string hangs down to just above the bottom of the jar. 5. Bring enough water to fill each jar three-fourths full to a boil in a pot, with adult supervision. 6. Add 1 tablespoon (Tbsp.) of borax to the water, and stir until it dissolves. Repeat, 1 Tbsp. at a time, until no more borax will dissolve....
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