Let's do an experiment. Take equal amounts of water in three separate beakers. Add copper sulphate crystals in the first, milk in the second and chalk powder in the third beaker. Stir them well. Keep the beakers undisturbed for some time. 

In which of these beakers did the substance settle down? 

Let's do an experiment. Take equal amounts of water in three separate beakers. Add copper sulphate crystals in the first, milk in the second and chalk powder in the third beaker. 

What will you observe if an intense beam of light is passed through the sides of the three beakers? Write your answers in Yes/No in the following table.

Beaker $1$ contains a true solution, beaker $2$ contains a colloid and Beaker $3$ contains a suspension. Tabulate the characteristics of each mixture in the following table.

Beaker -$1$ contains a true solution. Beaker- $2$ contains a colloid and Beaker - $3$ contains a suspension. Which mixture in these beakers has the smallest particle size? How was this identified?

Evaluate the following mixtures: Ink, muddy water, fog, atmospheric air, milk, sugar solution, dilute rice water. Classify them into true solution, colloid and suspension.
 

Have you noticed that the path of the light beam can be clearly seen due to the dust particles in a cinema theatre and in smart classrooms where visuals are shown using a projector? What is the reason behind this? 

Tabulate the mixtures that we use in our daily life into solutions, colloids and suspensions. Are colloids and suspensions homogeneous mixtures? 
 

Most of the juices that we drink are liquids in the colloidal form. Such juices and liquids are available in the market. They do not settle down even after prolonged storage. How are they retained as such for long periods of time without settling down?