Some crystals look very similar but here are a couple of ways to tell them apart. The salt may look a little grayer than the sugar which may look whiter than the salt. The alum may sparkle a little ...
It was the first time judging was back at UB since 2023. Altogether, there were over 170 crystals, each made from aluminum potassium sulfate (alum), a nontoxic compound used in water purification. “It ...
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