Methane is combustible, neon is not.
Cobustible substances can catch on fire but non-combustible substances are inflammabe
neon is the only one i have got so far...........i'm searching for more<><><><>Any material that does not readily burn. For everyday use, most metals, rock, and glass are...
Combustible liquids can easily catch on fire and burn. Non-combustible liquids cannot, at least under a set of defined conditions.
Petrol, hydrogen and ethanol are examples of combustible substances.