Can gas be a solid or liquid?
No. But by lowering its temperature or the pressure, its phase can be changed.
Yes, it is possible.
They form a liquid. Gas + Gas = Gas Ex. Air Gas + Liquid = Liquid Ex. Coke Gas + Solid = Solid Ex. Methane + Palladium Liquid + Gas = Gas Ex. Fog Liquid + Liquid = Liquid Ex. Water + Alcohol Liquid + Solid = Solid Ex. Material For Teeth Solid + Gas = Gas Ex. Smoke Partciles Solid + Liquid = Liquid Ex. Sugar + Water Solid + Solid = Solid Ex…
Matter can change in a few ways: # Solid-Liquid # Liquid-Gas # Gas-Solid # Solid-Gas # Gas-Liquid # Liquid-Solid. Using water as an example, it can melt (Solid-Liquid), it can evaporate (Liquid-Gas), it can condense (Gas-Liquid) and it can freeze(Liquid-Solid). For the Solid-Gas and Gas-Solid, there are some substances that skip the liquid stage completely such as what is commonly known as "dry ice." Dry Ice's chemical composition is composed of frozen CO2.