Q: What did the scientist say when he found 2 isotopes of helium? A: HeHe
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Don't trust atoms, they make up everything.
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A biologist, a chemist and a statistician are out hunting. The biologist shoots at a deer and misses 5th to the left. The chemist takes a shot and misses 5th to the right. The statistician yells "We got 'em!"
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A proton and a neutron are walking down the street. The proton says, "Wait, I dropped an electron help me look for it." The neutron says "Are you sure?" The proton replies "I'm positive."
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Q: Why do chemists like nitrates so much? A: They're cheaper than day rates.
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