Will rate brainliest! need !
which of the following pairs of words describe the same thing?
a compound and a mixture
a heterogeneous mixture and a solution
a substance and a mixture
a homogenous mixture and a solution

The first step to answering this question is understand what heterogeneous and homogeneous mean in terms of mixtures.

While heterogeneous mixtures are different throughout, as in containing different substances or having materials in different phases (gas, liquid, solid) mixed in, a homogeneous mixture is the same in both appearance and composition throughout.

Basically...
Heterogeneous: different
Homogeneous: same

Some examples of heterogeneous mixtures are trail mix, cereal, and pizza.
Some examples of homogeneous mixtures are water, bronze, and laundry detergent.

Another name for a heterogeneous mixture is a compound.
Another name for a homogeneous mixture is a solution.

So...
Heterogeneous Mixture = Compound
Homogeneous Mixture = Solution
Heterogeneous Mixture ≠ Homogeneous Mixture
Compound ≠ Solution

With this information, we can answer the question!
The question asks which choice pairs words that are the same thing.
So the answer will be the choice that is either "Heterogeneous Mixture and Compound" or "Homogeneous Mixture and Solution."

The answer is D. a homogenous mixture and a solution.

Hope this helps!

And a) oxygen i believe