Certainly! Here are a couple of physics and chemistry jokes for you:
Physics Joke: Why don't scientists trust atoms? Because they make up everything!
Chemistry Joke: Why do chemists like nitrates so much? Because they're cheaper than day rates!
Physics Joke: Why did the scarecrow become a successful physicist? Because he was outstanding in his field!
Chemistry Joke: What did one ion say to the other? I've got my ion you!
Physics Joke: Why did the physics teacher break up with the biology teacher? There was no chemistry between them!
Chemistry Joke: Did you hear about the chemist who lost an electron? He's positive he'll never find it again!
I hope these jokes brought a smile to your face!