Chlorophyll and other plant pigments

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The chlorophyll and other pigments in plant leaves can be separated and identified by chromatography. Chromatography can be used to separate mixtures and can give information to help identify substances.
The ratio of the distance moved by a compound (centre of spot from origin) to the distance moved by the solvent can be expressed as its Rf value: Rf = distance moved by substance / distance moved by solvent
Different compounds have different Rf values in different solvents, which can be used to help identify the compounds. The compounds in a mixture may separate into different spots depending on the solvent, but a pure compound produces a single spot in all solvents.

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Chlorophyll and other plant pigments

Cards (3)

1. Body Systems

1.1.7 Major muscles in the human body

2.3 Plant Tissues, Organs, and Systems

3.2 Human Defence Systems

1.1.1 Major bones in the human body

1.1.7 Major muscles in the human body

6.21 Human Resource Information Systems (HRIS)

2.3.2 Transport Systems in Plants

1.4.2 Effects of regular training on body systems

2.2.1 The Human Digestive System

5.2 The Human Nervous System

2.3.2 Transport Systems in Plants

Unit 2: Body Systems, Genetics, Microorganisms, and Health

1.1.1 Major bones in the human body

3.2 Human Defence Systems

1.2 Circulatory System

2.3 Plant Tissues, Organs, and Systems

1.3 Respiratory System

1.4.2 Effects of regular training on body systems

5.2 The Human Nervous System

5.2 Combined Events