@chemicalkim: Happy 250th America 🎆 Even a simple beaker of cooking oil can pull off a disappearing act. This test tube is made of borosilicate glass, the same glass used by the American company Pyrex, and it shares almost the exact same refractive index as cooking oil. Watch it vanish right before your eyes 👀 #EduTokContest #LearnOnTikTok #Chemistry #America250

Chemical Kim

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Saturday 04 July 2026 11:54:50 GMT