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Chromatography

Chapter 1.3 Outline

Subject: 
Chemistry
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Chemistry
Nature
Phase transitions
Mixture
Chemical substance
Chromatography
Solid
Distillation
Melting
Physical change
Characteristic property

Properties can be? Physical - can be observed without changing identity or composition of the substance Ex. Color, odor, Density, Melting Point, Boiling Point, Hardness Chemical - describe the way a substance may change or react to form other substances Ex. Flammability - the ability of a substance to burn in the presence of oxygen Intensive - do not depend on the amount of sample being examined Help to identify substances Ex. Temperature, melting point Extensive - Depend on the amount of sample Help to show quantity of a substance Ex. Mass, volume Physical and Chemical Changes Physical Change - substance changes its physical appearance, but not its composition Changes of state are physical changes Chemical Change - substance changes into a chemically different substance

ap bio lab 4

Subject: 
Biology
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Biology
Chemistry
Biochemistry
Photosynthetic pigments
Tetrapyrroles
Chlorophyll
Pigment
Photosynthesis
Biological pigment
Chromatography
Plant
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bio lab 4

Katie Hallstead Mrs. Legary AP Biology p.0 January 15, 2013 Lab 4: Plant Pigment and Photosynthesis Abstract In this experiment, there are two activities that aim to find two different things. In the first one, paper chromatography is used to separate the pigments found in chlorophyll. The second activity consists of measuring the rate of photosynthesis by observing the change in color that happens when DPIP is reduced through a time interval. Problem How many pigments exist within plants, and at what rates do they photosynthesize when exposed to different lights? Hypothesis
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