Question

part 2: multiple choice
circle the correct answer.

1. which is an example of a heterogeneous mixture?

a. saltwater b. air c. sand and water d. sugar water

1. in saltwater, what is the solute?

a. water b. salt c. cup d. spoon

Explanation:

Question 1

A heterogeneous mixture has non - uniform composition. Saltwater (A) and sugar water (D) are solutions (homogeneous, uniform composition). Air (B) is a homogeneous mixture of gases. Sand and water (C) have visible sand particles dispersed in water, non - uniform composition, so it's heterogeneous.

In a solution, the solute is the substance dissolved in the solvent. In saltwater, water is the solvent (it does the dissolving), and salt is the substance being dissolved (solute). Cup and spoon are just containers/tools, not part of the solution components.

Answer:

C. Sand and water

Question 2