gas and liquid
Fuel that is not a liquid or solid can be a gas. Many road vehicles use natural gas or propane but I have not heard of an aircraft that does.Fuel that is not a liquid nor a solid is probably gaseous - like the natural gas we use for our cars.
Solid
General classes of colloids are: gas in liquid, gas in solid, liquid in gas, liquid in liquid, liquid in solid, solid in gas, solid in liquid, solid in solid.
Propane
solid
Liquefied propane is propane gas compressed to form liquid. Generally one of the component of LPG gas.
Propane is a gas a room temperature if it is not compressed. However, if it put in a canister under high enough pressure, it will be a liquid even at room temperature. Propane is a liquid below -44 degrees F or if its compressed. Grill bottles are only fillid 80% full with liquid. so you can use the propane gas on the top of the bottle.
evaporation solid to liquid - melting liquid to gas - evaporation gas to liquid - condensation liquid to solid - freezing solid to gas and gas to solid - sublimation
The majority use liquid propane, and some are hooked into the home's natural gas line.Natural, Propane, Charcoal fuel.
Is a pencil a solid liquid or gas
evaporation solid to liquid - melting liquid to gas - evaporation gas to liquid - condensation liquid to solid - freezing solid to gas and gas to solid - sublimation
These nine types of solution are solid to solid solid to liquid solid to gas liquid to solid liquid to liquid liquid to gas gas to solid gas to liquid gas to gas