Fire is one of the usual suspects that causes cotton to ignite.
Gun powder is white and it is flammable there is your answer !!
The engine's pistons compress the fuel (an air and diesel oil mixture) in the cylinders and the heat generated by that compression causes the fuel to ignite.A longer answerDiesel engines ignite their fuel solely by means of compression: whilst spark plugs are used to ignite the gasoline fuel and air mixture in gasoline engines, in diesel engines the diesel oil and air mixture is compressed to a very much higher degree, which causes a lot of heat. The resulting very high temperature causes the fuel to self-ignite.
The friction of rubbing up and down causes the sparks to ignite and to spill everywhere.
A compressed cotton bale may explode when exposed to high humidity. Cotton is highly hygroscopic and readily absorbs water vapor from the air. After baling at ideal moisture content, subsequent water absorption could potentially increase the volume of cotton by 40-45%. This may cause an "explosion." (This answer assumes that "explosion" is not referring to spontaneous combustion)
Well....What region are you in?
No, the norm is to heat alcohol to ignite it, this causes the whisky or other alcohol to give off vapors which can then be ignited. The flash point (temperature at which a substance gives off vapors) of alcohol is 54F (12C), so anything below that will not ignite.
Putting cotton balls in the microwave can be dangerous as they can catch fire due to their ability to ignite quickly when exposed to heat. The cotton balls can also release harmful toxins when burned, posing a risk to your health and safety. It is not recommended to put cotton balls in the microwave.
ignite
Ignite is a verb.
ignited is the past participle of ignite
SCIENCE! Two factors enable the match to ignite: rubbing causes friction which causes heat, and the side of the matchbox also contains a catalyst which aids combustion.
Natural fibers such as cotton, linen, and silk burn more readily than other materials (silk being the most flammable). Synthetic materials like nylon, acrylic, and polyester do not ignite as readily as natural fibers but when they do ignite they melt causing severe burns. Natural and synthetic blends could be the most dangerous with the combination of high rate of burning and melting making it more hazardous than either fabric alone.