model has no tag wiki and seems like a pretty useless tag to me. Any thoughts? Does it have a scope or should it be deleted?
If my hunch is correct, model is supposed to be for questions about $\ldots$ models. But since almost everything in chemistry is explained by some sort of model we have to tag every question with model.
BTW I'm kidding. The applicability of the tag to everything means it's either a "meta" tag or needs to be closed as "too broad". It seems no one thought this could be a tag so we didn't get enough tagging to notice it, but it seems it was a tag introduced in the early days of beta when stuff weren't that $\ldots$ consistent.
15 questions are a harmless retag, but if we're feeling lazy, I can add it to the TRE checklist.