WALA: Investigating evaporation

1. Fill the glass beaker with three quatres full of water.

2. Put a teaspoon of the copper sulfate crystals into the jar and observe what happens.

Draw and label your observation.

Learners to draw in their notebooks..

( check the next slide to have an idea of how your drawing will look like.)

a). Write down your observations.

b). What can you observe in the water around the copper sulfate?

c). Can you see the solid copper sulfate any more?

d). In this activity, which is the solute and which is the solvent?

At first, you can see the copper sulfate, but then the crystals disappear but the blue colour remains in the water. The copper sulfate is the solute. The water is the solvent. Other common solutions are dissolving sugar in tea or coffee, dissolving instant coffee granules in hot water, and dissolving powdered cool drinks in water.