When chemical W is added to a liquid, the chemical breaks down into substances X, Y, and Z. It is not possible to break down substances X, Y, and Z into simpler substances. What conclusion is supported by this evidence? Chemical W is an element.

Chemical W is a pure substance.

Substances X, Y, and Z are elements.

Substances X, Y, and Z are compounds.

Chemical W is a pure substance

Explanation:

We can conclude that the substance W is a pure substance. Matter on a broad basis can be classified as either pure or distinct substance and impure substances (mixtures).

So, since we can only split the substance into elements X, Y and Z with no simpler units, W is a compound and a pure substance.

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