LO: describe seperation via chromatography.
This week's experiment actually worked because we used the water as the solvent and the felt tip pens, solute. Since the felt tip pens contained more pigment, the solvent instantly travelled up the solute and dissolved into the pigment causing the colours to spread out and stretch.
Unlike last week's experiment. The experiment kinda failed for we used crushed leaves as the solute and ethanol as the solvent. Since we needed to grind the leaves to make a paste, it took my group to transform our batches of leaves into a runny paste. Eventually adding in the ethanol with the grind up leaves, the pigment gradually began to pour out, a brown pigment from green leaves.
Placing the brown solute onto the paper, the ethanol didn't really dissolve it instead it camouflaged with the solvent and was almost transparent.
Between the two experiments, this week's experiment was a success.
The different pigments have different sizes of particles and are carried at different speeds. That's why the blue was being outstretched first into the paper because it was the lightest pigment with a very decent amount.
