Yes. Anytime pure Oxygen comes in contact with hydro-carbons such as high-octane fuel gas, hydraulic fluid and some greases, the combination will ignite even without a heat source.
No, three things are needed the ignite a fire, carbon (fuel), oxygen and heat.
yes
Oxygen is neither combustible nor flammable. It supports the combustion of a combustible substance. For example, if you light a match and expose it to pure oxygen, the flame will grow larger and brighter while it's in the oxygen, but the oxygen itself will not ignite.
No, you can't ignite Neptune. While much of Neptune's atmosphere is hydrogen, there is no oxygen there to support combustion.
Phosphorus
Oxygen if it put into it.
16.3%
Oxygen will rekindle or relight a glowing splint.
if you ge grease on or near a fire and it could ignite. you can't put a grease fire out with water. but baking soda works
Hydrocarbons react with oxygen; the products are water and carbon dioxide.
I think you mean oxygen. However, hydrogen itself might ignite if heated enough by the splint. The chemical property is, anyway, either carbon or hydrogen's affinity with oxygen.
The sticks have more surface area exposed to oxygen.