Question

part a
how would you classify salt water?
pure substance - compound
mixture - heterogeneous
pure substance - element
mixture - homogeneous
none of the above

Explanation:

Salt water is composed of salt (solute) dissolved in water (solvent). Since the salt is uniformly distributed throughout the water, it is a homogeneous mixture. A pure - substance compound is a single type of molecule made of different elements chemically bonded, and salt water is not a single compound. A pure - substance element is a single type of atom, which salt water is not. A heterogeneous mixture has visibly different parts, which salt water does not have.

Answer:

D. mixture - homogeneous