Bright Sparks

Hi Bright Sparks,

just a quick reminder that there will be no session tomorrow Tuesday 27th  January.

 

There is also no session next week on 3/2/14.

I have been really impressed with your learning in the sessions.

In our last session we looked at chromatography.

What is chromatography?

What is it used for?

 

Can you describe the investigation you carried out in the session last week?

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6 thoughts on “Bright Sparks

  1. Hi Miss Redhead!

    Chromatography:
    Chromatography can be used to separate mixtures of coloured compounds. Mixtures that are suitable for separation by chromatography include inks, dyes and colouring agents in food.

    Simple chromatography is carried out on a paper. A spot of mixture is placed near the bottom of a piece of chromatography paper and the paper is then placed upright in a suitable solvent, eg water. As the solvent soaks up the paper, it carries the mixtures with it. Different components of the mixture will move at different rates. This separates the mixture out.

    In real life, advances in science can deal with deducing a mystery. Instead of private investigators, processes like chromatography frequently solve real-world mysteries.

    Chromatography is a process that helps scientists, law enforcement, and even schools and companies identify the composition of a particular sample.

    What we did:
    In Sydney Stringer, we were told to work out a mystery. The situation was that Mrs Mohamed had lost her phone! She thought that someone around the area where she had put her phone to charge had stolen it! Therfore, we had to use the amazing skill of chromatography, which Mrs Mohamed had taught us, to work out who stole the phone.
    Next to Mrs Mohamed’s laptop, there was a paper. The paper included writing on it. We were given 4 pens ; pens of the people who Mrs Mohamed suspected had stole her phone. Using chromatography, we were to find out who stole Mrs Mohamed’s phone. At the end, Mrs Mohamed dipped the paper in water. We then discovered that pen number 2 matched the chromatography on the piece of paper!

    Ojasvi Nag :D

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