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Making Pure Sand
There are very few
places on Earth you can find pure Sand. In most instances, impurities in
the Sand give it an off-white or beige color.
2. In a second test tube, dissolve 3.5 grams of Sodium Bisulfate in 10 mL of water. Stir vigorously with a glass rod until it is completely dissolved.
3. Pour the contents of the first test tube into the second. Mix thoroughly. A thick, jelly-like precipitate will be form in a few minutes. This substance is known as Orthosilicic Acid
4. Spoon some of the Orthosilicic Acid into a porcelain crucible. Heat the Orthosilicic Acid over a butane or Bunsen burner for 5 minutes.
5. When the mixture is thoroughly dried, it will be reduced to a white solid. This substance is known as Silicon Dioxide, or pure Sand.