Be able to follow instructions (L4) Apply your skills to a new task (L5) Carry out a safe practical (L5) Explain what you have found out (L6) Work well as part of a team

How could we help the CSI team? Catherine has some dirt from the crime scene. She wants to separate the iron from a bomb out of the soil! Nick thinks that someone has dissolved drugs (cocaine) in bottles of mineral water. How can he get the pure cocaine from the water?

Chromatography is a way of separating the parts of a liquid You use a solvent to separate a solute! You will see a demonstration and an explanation of how it works!

CRIME REFERENCE IBS Reports have come in about the death of a 13 year old child in Ibstock. Twenty other students have been taken to hospital. The CSI team think it is because a banned chemical has got into some pop! The banned chemical is a red dye called AMARANTH. The CSI team have found three types of pop: OctoDrInk, Berry Bonanza and Blue Lagoon. Have these drinks got the banned chemical in them. It’s your job to find out!

1. Take a piece of filter paper and rule a straight line 1 cm from the bottom with a PENCIL. Draw on four crosses like the picture! 2. Carefully put spots of each drink on each of the crosses. Let them dry! Put a spot of amaranth on the final cross. 3. Fold the filter paper into a cylinder and carefully tape it together. OctoDrInk 4. Put some water into a small plastic dish and carefully stand the cylinder in it. Watch what happens! Leave it for 10 minutes. amaranth

What happens when the water (solvent) moves up the paper? Explain which drink (OctoDrInk, Berry Bonanza or Blue Lagoon) might have an illegal dye in it. Why might someone put an illegal dye in drinks? What has the letter ‘E’ and dyes got in common?

chromatography How many 3 or more letter words can you find in the word above? 0-6 wordsCSI rookie 6-10 wordsCSI officer 11+ wordsThe boss!