Where would you categorize homogeneous and heterogeneous?

Answer 1

This question isn't very clear. An element is made up of the same numbers of protons, neutrons and sometimes electrons. So an element is homogeneous. On the other hand, a mixture of different elements may very well be heterogeneous. Additionally, some elements might react together, unlike homogenous or heterogeneous mixes, to create compounds.

If this question said element singular vs. elements plural, then it most definitely would be homogeneous.

Also many chemical elements can be considered non-homogeneous because they contain different types of isotopes; but this non-homogeneity is not so important for chemistry.

Answer 2

Examples:

Homogeneous: vinegar (solution of acetic acid in water), brine (solution of sodium chloride in water), air (a mixture of gases).

Heterogeneous: a mixture of cement and sand, a rock, a cake.

Answer 3

Homogeneous and heterogeneous are terms used to describe mixtures. Homogeneous mixtures have a uniform composition and appearance throughout, while heterogeneous mixtures have uneven distribution of components and can be visibly distinguished.