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Crazy Crystal Creations: How to Grow the Best and the Largest Crystals
Transcript of Crazy Crystal Creations: How to Grow the Best and the Largest Crystals
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 crystal grows. Step 3 As soon as the ice bath is prepared, use a thermometer to take the temperature of the ice bath, the refrigerator, and the room temperature, and record the temeratures in your scientific notebook. Step 4 Cut three pieces of string and rap them around three pencils. The pieces of string should be equal in 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. Step 5 Bring enough water to fill three jars until they're all three-quarters full to a boil in a pot, with an adult supervising of course. Step 6 Add 1 tbsp. of borax to the water, and stir until it dissolves. Repeat,1 tbsp. at a time, until no more borax will dissolve. This is your saturated solution. Step 7 With an adult's help, pour equal amounts of saturated solution into the three jars. The jars should be about three-fourths full. Step 8 Lay a pencil across the top of each jar so the string hangs down into the solution Step 9 Cover the jars with plastic wrap, wax paper, or aluminum foil. Step 10 Place one jar in the refrigerater, leave one undisturbed on a countertop or table at room temperature, and put one in the ice bath you prepared. Step 11 Leave the jars alone for a minumum of 5 hours,or until crystals form (whichever is longer), and be sure not to disturb them. Check the ice bath regularly to make sure that the ice has not melted. Add ice , as necessary
a. If crystals form under one condition before they do in the others, note that in your scientific notebook and let all three conditions continue for another hour to see if crystals form in the others.
b. Record in your scientific notebook the total amount of time (from step 9 to step 11) that you let the crystals grow. Step 12 Carefully remove the pencils, one at a time, and note the size, shape, and number of crystals obtained from each solution. Are there any differences? Why do you think this is so? Record your observations in a data table. Step 13 Repeat steps 1-12 at least two times to make sure your results are accurate and repeatable. My Hypothesis: When I finished my experiment I found that my hypothesis was wrong. Every hour that I would check to see how they were doing the crystals in the refrigorater seemed to always have more crystals than the others. So in conclusion the best climate to grow crystals is in a cave or in this case a refrigorater.