41.3k views
3 votes
Which of the following substances is NOT a solution?

a) Brass

b) Air

c) Copper

d) Vodka

e) None of the above

1 Answer

4 votes

Final answer:

Copper is not a solution among the given options, as it is a pure element, in contrast to brass, air, and vodka, which are all examples of homogeneous mixtures or solutions.

Step-by-step explanation:

The substance from the options given that is NOT a solution is c) Copper. To clarify the matter, let's go through the choices one by one:

  • Brass is an alloy made up of copper and zinc, which is considered a homogeneous mixture, also known as a solution in the broader sense.
  • Air is a mixture of gases, primarily nitrogen, oxygen, and small amounts of other gases, and is considered a homogeneous mixture or solution.
  • Copper, being an element, is neither a compound nor a mixture. So, it is not a solution.
  • Vodka is a mixture of water and ethanol and sometimes other components; thus, it's a homogeneous mixture or solution.

Hence, copper is the correct answer, as it does not classify as a solution.

User Keon Cummings
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.