There's a reason kids in Spelling Bee competitions are allowed to ask for the language of origin of a word.

It can often give a hint that a certain sound is spelled an unusual way. The "Ch" of "Chemistry" comes through Greek where it's spelled with their letter "chi", which for reasons I won't get into, looks like our X.

Kids in a spelling bee wouldn't need to ask about "Chemistry", of course, but there may be other examples where that would be useful.