Today in science we are doing an experiment called chromatography Pigments are substances that give color to things. They are used to give color to all sorts of things like felts, paint, plastic, food, fabric, even animals and plants.
Chromatography is a technique for separating a mixture by passing it in solution or suspension through a medium in which the components move at different rates
Pigment: the natural coloring matter of animal or plant tissue.
AIM- To separate the different pigments from ink using chromatography
HYPOTHESIS- I think that the paper will change color and their ink will go high on the paper
EQUIPMENT- Felt tip pen, filter paper strips, test tube, measuring cylinder, pencil.
1- Draw a line across the filter paper in pencil, 5cm from the bottom.
2- Draw a colored dot in the center of the line.
3- Measure out 10mL of water and place it in the test tube.
4- Place the filter paper in the test tube and fold it over the side. MAKE SURE THE PENCIL LINE/ DOT IS NOT IN THE WATER.
The pigments separate because each pigment has a different solubility (some dissolve more than others), which means some of them to move faster and further than others.
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