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
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?
How do they tell if the pens used for both of these pieces of evidence are the same?
Rainbow paper
Materials;
1. Chromatography paper
2. Felt pens
3. cup
4. water
5. pencil
Process:
Step 1: Tack the Chromatography paper and use felt pen draw two dots.
Step 2: Tack the Chromatography paper and use felt pen draw two dots.
Step 3:And put some water in, the water and wait for 10 minutes.
Step 5: After 10 minutes
Conclusion: What have I learnt from this experiment?
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