Evaporation

Aim:

To separate a solute from a solvent in a solution using evaporation

Equipment:

- Copper sulfate solution,

- 250 ml beaker,

- Heatproof mat,

- Evaporating basin,

- Gauze mat,

- Bunsen burner,

- Tripod.

Method:

ignore lauren & johanna (they wouldn't move)

1. Set up the bunsen burner, tripod, and gauze mat. Don't place the bunsen burner under the tripod yet.

2. Add approximately 50ml of hot water to your beaker and place it on top of the tripod, on the gauze mat.

3. Add enough copper solution to quarter fill the evaporating basin.

4. Carefully place the evaporating basin on top of the beaker.

5. Light your bunsen burner. Open the air hole and gently push the Bunsen burner under the tripod.

6. Heat the solution until most of the solvent has evaporated and crystal solute are forming.

7. Turn off your bunsen burner.

Observations:
Upon the copper sulfate solution evaporating, a ring of blue crystals began to form around the top of the evaporating dish.

Results:

Upon finishing the experiment and leaving half of the copper sulfate solution to evaporate further in the sun, all of the solution crystalised, leaving a shiny blue.

Discussion:
Evaporation happens when molecules/atoms escape from a liquid, transforming into a vapour.
The solute, the copper sulfate, using the solvent, water, evaporated, leaving behind a series of blue crystals, many interconnected with each other.