Question

Is the given material comes under the category of "pure substance" or not? - Brick.

Answer 1

$\textbf{Pure substance}$ is one which is made up of only one kind of particles of atoms or molecules.

Since, brick can't follow this rule, so it is not a pure substance.

Answer 2

"The give material brick does not come under the category of 'Pure Substance'.

A pure substance always has the same kind of matter or atom throughout its molecular structure.

A brick is made using the mixture of clay, soil and shale and hence its molecular constituent is not the same. Hence a brick is not a pure substance.

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