Science

Aim: To separate colors 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. Cup

2. chromatography

3. felt tip pens

4. water

Process:

Step 1: Copy and paste Mr palmers blog post about colors

Step 2: Get a cup and the chromatography paper and two felts

Step 3: Put to dot on the chromatography paper

Step 4: Put the chromatography paper into the cup full of  hot boiling water

Step 5: Wait for ten minutes for the water to be soaked, After ten minutes you start to see the paper start to change because of the water

Step 6: 

Conclusion: What have I learned from this experiment?

In science, we were putting dots on paper but we could only use felt pens because it would make the water change color. We didn't use normal paper we were using chromatography paper after you put a dot on the paper you have to put it in a cup full of hot water. don't fill it too high or it won't work here are some pictures of them when we put it in and after we took it out.