fossil fuels
when the the house are burning the fire move faster because of the combustible materials
No, ammonia is not a combustible gas. It is a highly reactive gas that can contribute to combustion if in the presence of other combustible materials, but it is not considered combustible on its own.
Example sentence - The combustible materials made the fire burn hotter.
You should refrain from putting electric heaters near combustible materials because heat emitted from the heater is capable of causing the combustible material to blow up or catch fire.
No, ammonia is not combustible on its own. However, it can act as a fuel and support combustion in the presence of other flammable materials.
No, hydrochloric acid is not combustible. It is a strong acid that can react with certain materials, but it does not burn or catch fire.
Another term is flammable.
It is not combustible, but it may burn many other materials
There are some simple requirments for something to be a convenient fuel - it must be abundant, easily collected and transported, cheap and ideally have a high calorific value per unit volume. Actually the question asked is wrong. Combustible subs. = Combustible materials all combustible subs./combustible materials are fuel but all fuel are not combustible subs/combustible material because fuel can also be an incombustible material/incombustible subs.
self heating or pyrophoric materials
fossil fuels
Most metals are considered non-combustible. In addition refractory and other oxides such as magnesium oxide, titanium dioxide, Zirconium oxide and materials such as cement, concrete, clays, soils, sand and ceramics are all non-combustible. There are many other substances too.