Absolutely!! Most publications have general information about what size and font they want characters, page breaks rules and paragraph spacing. Typically font is Times New Roman. But it really depends on who you with. Generally, the editors take care of all that drama, so if you just write your article in Microsoft Word or Google Docs and then submit it to the magazine company, you should be fine. Just read their submission requirements before you submit your piece.
And yes, generally speaking a query for an article will differ from a query for a novel.