2.Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a structure holding another material called the stationary phase.
Yesterday (20/03/2018) Drew,Joel,Josh and I went out and collected three types of leaves from different trees, we came back in and started grinding up the leaves while adding ethanol. The next day (today 21/03/2018) we have continued the experiment, with filter paper, tape,boiling tubes,test tubes,and splints, what we have been doing is taping a splint to filter paper and, lowering it into a boiling tube to test the length.We then added ethanol to the bottom of two boiling tubes then put the filter paper in and added a drop, of our crushed up leaf mixture (Which Mr Guy had finished and turned into a liquid,) and put a drop of it on the filter paper and put the filter paper back into the boiling tube, which started the experiment we failed two but one has kind of worked but that was Mr Guys leaf mixture,
26/03/2018
Today we have done the same experiment but with felt tip pens and ethanol has been replaced with water and we watched the different pigments come out. All of them are successful the colours we have used are red,purple,black and blue. Purple and blue have basically the same colours red doesn't really have to many colours coming out of it,black has quite a lot of colours coming out of it such as green, blue, yellowish green,purple,etc.
A quick list of materials/tools you will need/use.
>Wooden splints
>Filter paper/chromatography paper
>Water/ ethanol
>Crushed leaves/ felt tip pens
>4 test tubes (not boiling tubes)
>Test tube rack
>Pipette
>Beaker
(all depends on what your using if your using leaf pigment or felt tip pen if you are using leaves then use ethanol if your using felt tip pens then use water)
