Q: How
was dry ice invented?
A: It wasn't - it was discovered.
Q: Who invented it?
A: The Dry Ice Corporation of America trademarked the name Dry
Ice in 1925.
Q: What exactly is dry ice?
A: Basically carbon dioxide in its solid form (frozen at -109.3 °
F or -79.5° C)
Don't think that by being solid it might melt, it doesn't. It goes
straight from its solid form back to gas which is called sublimation.
Q: What's it used for?
A: A variety of things:as a refrigerant to ship perishable foods such
as ice cream, meat, etc in entertainment for special effects such
as fog; cryogenics; domestic cleaning products