If you do a really good job of it ...
you end up with a carbon rich residue.
There are a number of metals that react with water, such as sodium, lithium, etc., but there is no element that decomposes in water. Decomposition is a characteristic of more complex molecules, not of elements.
As food ages and decomposes, mold may form on the food.
it is decomposed by little decomposers such as bacteria
until the food decomposes or gets eaten.
no as it will burn out the element
No,if we melt sugar it decomposes and forms a sour solution that is not sugar.
Owls are consumers, because they have to find their food.
it decomposes much faster
Oxygen
Oxygen is the element in the air that is needed for coal dust to burn. When coal dust is exposed to oxygen and heat, it can ignite and burn.
It doesn't it decomposes its food by breaking down things like a fallen down tree.
which organisms in your food web are decomposers