Did, or does, your school have a chemical jar?

Random chemicals is NOT a good thing.
You can make Nitroglycerin with the right random chemicals, also you can make other unstable compounds.

Big BOOM !

BOOOM! My schools was a 20 gallon glass jar that was half full when I went to school with them. Nice rainbow colours. Looked like Jupiter.

I think they mean drugs, like LSD, speed, barbs, not chemicals as in unwanted lawn chemicals, old gasoline, used motor oil, which should be disposed of at your local hazardous waste site.

Chemical jar?! I hope not.

No, but Bill Cosby did.

I’m thinking the chemicals you were using in junior high (what is that, like 8th grade or something?) were limited to simple compounds and that your teacher was controlling what went into the bin and what it was being mixed with. The strongest things you were working with was perhaps a 10% solution of hydrochloric acid? Or copper solutions and using electrodes, if you remember working with a large type of battery? I’m sure the teacher knew what was being poured into it, but it seems really strange that it was so large and not emptied on a regular basis.

I haven’t seen anything like that.

I think someone is remembering wrong… or dreamt something and thought it happened.

No non no no no!! No way would any adult randomly mix chemicals together!