When wood burns, a small amount of ash is made. Why is the mass of the wood before the fire not equal to the mass of the wood after the fire?
The burning of fuel (in this case wood) in the presence of oxygen to produce energy in the form of fire is called combustion. Combustion requires three things, a source of fuel (hydrocarbon based), oxygen (usually from the atmosphere ), and a spark to initiate it. The products of combustion are carbon dioxide, water...
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