Question

21. Putting sand and salt together makes *

Mark only one oval.
A)a compound.
B)an element.
C)a mixture.
D)a solution.

Answer 1

C. A mixture

One method of separating salt and sand is based on solubility. If a substance is soluble, it means it dissolves in a solvent. Salt (sodium chloride or NaCl) is an ionic compound that is soluble in water. Sand (mostly silicon dioxide) is not.