chromatography Flashcards
1
Q
chromatography
A
chromatography is a method used to separate mixtures into their diffrent chemicals
2
Q
solvent
A
the chemical that dissolves the sample in chromatography
3
Q
rf value
A
a value ( always less than 1) that shows how far the substances has moved compared to the solven.equation: rf= distance moved by substance/ distance moved by the solvent
4
Q
solvent front
A
the maimum distance the solvent moves up the paper
5
Q
stationary phase
A
the medium (e.g paper) through which the mobile phase passes in chromatography
6
Q
mobile phase
A
the solvent (e.g water) that carries the sample (e.g .ink ) in chromatography
