Respuesta :
Answer:It is not an element because elements are the purest form of a substance; hence, they are no longer broken down by heating
Explanation:
If a white powder produces a colorless gas and a black solid when heated, such a white powder cannot be an element.
Elements generally consist of pure substances of the same atoms. Hence, elements cannot be further broken down into different substances. Compounds, on the other hand, are made of atoms of different elements that have been chemically combined together.
The heating of the white powder generated other substances that do not have the same atoms as the white powder. Thus, the white powder must be a compound and the heating must have caused a reaction and formation of new products.
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