Question

a student makes four mixtures and records his observations in a table.
based on the students observations, what conclusion can be made about the mixtures?
○ all of the mixtures are solutions.
○ none of the mixtures are solutions.
○ the pepper is soluble in water.
○ the salt is soluble in water.

Explanation:

A solution is a homogeneous mixture where a solute dissolves in a solvent. From the observations, only salt dissolves in water, while sand, iron filings, and pepper do not. This means only the salt-water mixture is a solution, and salt is soluble in water. The other options are incorrect: not all mixtures are solutions, some (salt-water) are; pepper does not dissolve, so it is not soluble.

Answer:

The salt is soluble in water.