Q: What is the chemical formula for "banana"? A: BaNa2

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Q: What is the most important rule in chemistry? A: Never lick the spoon!

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Q: Why do chemists like nitrates so much? A: They're cheaper than day rates.

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Q: What did the scientist say when he found 2 isotopes of helium? A: HeHe

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As an ion chromatography chemist I made this one up: Anions aren't negative, they're just misunderstood.

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