Question

which substance is an example of a colloid?
o milk
o tomato juice
o sand and water
o sugar and water

Explanation:

A colloid is a mixture in which one substance of micro - scopically dispersed insoluble particles is suspended throughout another substance. Milk is a colloid as it consists of tiny fat globules suspended in water. Tomato juice is a suspension. Sand and water is a suspension where sand settles down over time. Sugar and water is a solution as sugar dissolves completely in water.

Answer:

A. milk