Q: Did you hear oxygen went on a date with potassium? A: It went OK.

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

 939

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Don't trust atoms, they make up everything.

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

 796

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Two chemists go into a restaurant. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" - and he died.

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