Yes, they are because they contain a type of gas called methane which is highly flammable
No.
it is not flammable
No.
Helium is completely non flammable.
Plutonium as a fine powder is very flammable.
Probably curium in powdered form is pyrophoric.
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A material that can easily undergo combustion when in the vicinity of an ignition source is known as a flammible solid. One division of flammible solids is called desensitized explosives.
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what poop is in no way flamible unless you douse it in gasoline
it farts it farts it farts
If you put a natch to it, yes, it will ignite (explode). It is very flammible.