Separation via chromatography

Today in Science we did the same experiment as last week. Though this time we used markers instead of leaves we've ground.

Today's experiment and last weeks experiment are very different.

Last weeks experiment:
For last weeks experiment, we grounded leaves to use.

The pigments from the leaves did not work as well as we expected. This is because we used a lot more solvent than the solute.

If we used more solute than the solvent then maybe it would've worked better.

This weeks experiment:
This weeks experiment worked perfectly. We can finally see the different pigments in one colour.

This is probably because the pigments in the markers are more concentrated than the ones in the leaves.

As you can see in the picture there's a colour that goes up faster than the other colours. This is because that colour is lighter than the other pigments.

The best way to think of it is having a pebble and grains of sand and dropping them into a stream. Which one will fall first? The sand will fall first, right? This is because the sand is a lot lighter than the pebble.