Question

A student drops some metal paper clips in a box of sand. The student use a magnet to separate the metal paper clips from the sand. The reason this works is that the sand and paper clips together are

A) a mixture
B) an element
C) a compound
D) a substance

Answer 1

The answer to your question is A 

Answer 2

The answer is mixture.

Explanation:

A mixture is a material that consists of two or more different physically combined substances; in this scenario the things are paper clips and sand.

Here, the student uses a magnet to separate the metal paper clips from the sand. So, here sand and paper clips together are a mixture.