Aim: To separate colours by using the process of chromatography.
Definition: Chromatography is a method of separating out materials from a mixture.
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.
Rainbow paper
Materials;
1. filter paper /chromatography paper
2. water.
3. pencil.
4. water-based felt pen. I used purple and blue colours.
5. ruler.
6. cup.
Process:
Step 1: Get the filter paper
Step 2: Get the ruler and rule a line and the bottom at 1cm long.
Step 3: Make two dots with the water-based felt pens on the line.
Step 4: Fold the paper to make it hang on the cup so it is not touching the bottom.
Step 5: Pour some water in the cup.
Step 6: Watch its colour.
Conclusion: Overall this was a cool experiment. I learned that colour and water can go up to filter paper. I also liked this because it was easy and also fun watching it water go up.
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