Water pollution

Introduction:

Last tuesday we make a new experience that consist in watch how grow the seed with contaminated water.

Procedure:

Take 10 ml. of the polluting solution and put them in a 100 ml tes-tube.

Fill it with distilled water up to 100 ml.

Pour this solution into a mew Erlenmeyer labeled ''polluting 0.1''.

Take 10 ml of the ''polluting 0.1'' solution and put them in a 100 ml test-tube.

Fill the test-tube with distilled water up to 100 ml.

Pour this solution into a new Erlenmeyer labeled ''polluting 0.01''.

Take 10 ml of the ''polluting 0.01'' solution and put them into a 100 ml test-tube.

Soap with recycled oil

Procedure:

1. Put 25 ml. of oil in one erlenmeyer and add 10 ml. of water.

2. Weigh 4'5ml. of NaOH and put in a new erlenmeyer.

3. Put some detergent to bring forward the process.

4. Mix the substance.

5. Put the substance in a mould.

6.Watch the results.

Objective:

Our objective is recycle the oil giving them a new use, because the oil is a very pollution element.