Question

What distinguishes two substances combined to become a compound vs. two substances combined to become a mixture? A. whether they can be easily separated B. whether they chemically bond together C. whether they both are visible D. whether they are heterogeneous

Answer 1

The answer would be B.

Why?

Because compounds are a combination of two or more elements, while a mixture can be virtually anything. We cannot simply mix hydroxide and sodium together and claim it as a physical bond, it doesn't make sense since they react with each other in some way. However, mixtures are typically physical, since a chemical change most likely would not occur if we mixed popcorn and pretzels together in a bowl to make chex mix.

I hope I could help and I hope this made sense!