To say that petrol is flammable is a bit inaccurate. The fumes of petrol, the gas created when petrol evaporates is extremely flammable. The liquid is not. If it is very cold outside, your petrol might not be evaporating at all, which would make it difficult for you to light it on fire. Either way, I'd recommend that you stop trying to light the petrol in your car on fire with an open flame.
Yes but only in the right conditions. If diesel is outside just on the road, for example, then no it will not ignite from a flame.
Glycerin can be used to make fire by mixing it with Potassium Permanganate. The mixture is the exposed to an open flame where it will quickly ignite and burn at high temperatures.
Petrol is a blue-green turquoise color.
Acetone easily burn.
At normal outdoor ambient temperatures, and trying to light the fuels in their simple liquid states, petrol will ignite VERY easily, Diesel will not. If you soak a rag with the fuels - again the petrol will ignite and burn very easily with a 'whoosh'. The diesel soaked rag will ignite but it may take a few seconds to get going and flame will spread relatively gently across the rag. Inside the engines it is a different story, the diesel is ignited by compression and this actually causes it to explode rather than burn. In both cases it is the vapour given off that burns, not the liquid.
because you can set fire to the petrol
In the cannons of pirate ships, a flame at the breech would ignite the powder charge. Concentrating the sun's rays with a lens is one way to ignite a daytime campfire. Accumulated creosote from wood can ignite inside a fireplace chimney.
Yes, as long as there is a spark or flame to ignite the substance.
No, diesel at room temperature will not ignite if you direct a naked flame to it.
It is not the fuel that ignites it is the fumes. Any spark or flame will ignite the fumes.
it doesnt change the color of the flame.
Because that would make the compressed air so hot that the gas/fuel mixture would self ignite, and you don't want that. Gas engines rely on spark plugs to have the the cylinger ignite at the right moment. W/o it you get an uncontrolled flame front, knocking, rough running and maybe even engine damage