Great question! "Alright" is synonymous with "Okay." "The soup was alright" (Meaning it was okay). Or "Do you want to go out?" "Alright!" (Meaning, sure! Or Okay!) It can mean affirmative or qualitative. "All right" means pretty much the same thing, and technically, I guess, is the formal version. However, in actual usage, "all right" is more like a state of being, if I were to describe it...and I don't know that I'm describing it well. Maybe others can add their two cents. Like "How's your mother?" "She's all right, thanks for asking!" (kinda like "all good") or something like that. Does that help or have I muddled it further?
Donna