Aim: To separate colours by using the process of chromatography.

Definition: Chromatography is a method of separating out materials from a mixture.

Eg. blood, ink, drugs,

Scenario

A crime has been committed. The police have a signed cheque and a letter from the same crime scene but it seems like the handwriting is different. They have 3 suspects but not enough evidence. They need to know if the letter and the cheque were written by the same person.

How do they tell if the pens used for both of these pieces of evidence are the same?

Rainbow paper

Materials;

1. One Cup

2. Chromatography Paper

3. pencil

4. water

5. coloured pens

Process:

Step 1:  Grab a cup, and some Chromatography  paper

Step 2: Draw 1 cm on the  paper

Step 3: Put dots of what colours you want you Chromatography paper to turn into.

Step 4: Put water in the cup

Step 5: Put the Chromatography paper in the cup.

Step 6: WATCH THE MAGIC HAPPEN.. and wait.

Conclusion: What have I learnt from this experiment?

We got Chromatography paper and put dots of what colours we wanted it to look like.