The biologist and physicist had to end their relationship because they had no chemistry.

You'll need to find some better humor if you want to get a reaction.

Well... How do you punish a light beam when it breaks the law? You put it in prism.

Aaahhh, I dunno, I thought that was pretty good. Course we'll have to see if it passes the @Sara-s test.

What is a chemists favorite tree? Why a CHEMISTRY of course.

What did one hydrogen atom say to the other?

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I've got my ion you.