Question

question 9 (1 point)
which of the following is an incorrect description?
o a
a homogeneous mixture.
o b
a solid element.
o c
a mixture of solids.
o d
a solution of gases.
o e
a heterogeneous compound.

Explanation:

• A compound is a pure substance, not a mixture. A homogeneous mixture has a uniform composition throughout. A solution of gases (like air), a mixture of solids (if uniform), and a homogeneous mixture all fit the concept of mixtures. A solid element is a pure substance. But a heterogeneous compound is incorrect as compounds are pure substances (homogeneous at the molecular level). Compounds have a fixed composition and are not heterogeneous mixtures.

Answer:

e. A heterogeneous compound