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. water
2. felt pens
3. a cup
4. chromatography paper
Process:
Step 1: get a ten Centimetre pecs of paper.
Step 2:mark a Centimetre with your felt pen put two dots.
Step 3:put water in the cup so it is just touching the paper.
Step 4:and wait for to do its thing
Conclusion: What have I learnt from this experiments.
I learnt that a few drops goes a long way
No comments:
Post a Comment
To support my learning I ask you to comment as follows:
1. Something positive - something you like about what I have shared.
2. Thoughtful - A sentence to let us know you actually read/watched or listened to what I had to say
3. Something helpful- how have you connected with my learning? Give me some ideas for next time or ask me a question.