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Leaves are actually more colors than just green but Chlorophyll is so dominant most of the summer that its green color covers up all the other natural colors in the leaves. We can separate the colors of a leaf by doing this leaf chromatography science experiment.
In this experiment, students investigate the different pigments present in a leaf, from chlorophyll to carotenes, using paper chromatography. The experiment takes about 30 minutes and can be carried out in groups of two or three students.
Students use thin-layer chromatography to separate the various pigments that are present in two different leaf extracts. They identify each pigment and determine whether the two extracts have any pigments in common. The experiment is suitable for students aged 11–16 and takes 1–2 hours to complete.
Chromatography is an analytical method permitting the separation of a mixture into its molecular components. In this technique, a concentrated spot of the pigment mixture is deposited at one end of a paper strip. The paper strip is called the stationary phase.
LEAF CHROMATOGRAPHY INTRODUCTION Now that you have learned what chromatography is, you are going to explore its role in plant life. This experiment will show you how we can use chromatography to see fall colors. Why do you think leaves change colors in the fall? Let’s find out! MATERIALS DIRECTIONS - Small, clean jars. - Acetone or nail ...
Chromatography is a method for analyzing mixtures by separating them into the chemicals from which they are made. In this experiment you will be separating the pigments found in leaves. What pigments do you think can be found in each of the leaves? What pigments will green leaves contain? What about red leaves, or yellow leaves?
1. Cut chromatography paper into a strip that will fit into the graduated cylinder. Cut one end of the chromatography paper into a point or tip. Make a light pencil line about 1.5 cm from the end of the paper you just cut. 2. Use the coin to extract plant pigments from the leaf.
