Last class we had a lab. In this lab we experimented with paper chromatography. This particular type of paper is used to separate mixtures, which is one of the techniques that can be used to separate mixures.
So first, we cut 3 thin strips of chromatography paper with a pointy end (like a pencil). On these strips we draw a line 4 cm from the point and place 3 different food colourings on each strip. Later, we test these strips and dip them in test tubes filled with water. The results should be a separation of the food colouring components.
For example we had the green dye. The dye later broke from a yellow color to a blue color. Of course everyone knows blue + yellow =green.
The lab was a success, and it was interesting to see the colors seperate. Well thats a wrap then.
Study hard for the test next class!!!!
PH
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