Chromatography

Front

What is chromatography?

Back

A technique used to separate mixtures into their individual components based on their movement through a stationary phase and a mobile phase.

Front

What is the stationary phase in chromatography?

Back

The phase that does not move and is used to separate the components of a mixture.

Front

What is the mobile phase in chromatography?

Back

The phase that moves and carries the components of the mixture through the stationary phase.

Front

What does Rf value stand for in chromatography?

Back

Rf value (retention factor) is the ratio of the distance traveled by the substance to the distance traveled by the solvent front.

Front

What does a high Rf value indicate?

Back

A high Rf value indicates a strong affinity to the mobile phase.

Front

What does a low Rf value indicate?

Back

A low Rf value indicates a strong affinity to the stationary phase.

Front

What is paper chromatography?

Back

A method of chromatography that uses a strip of paper as the stationary phase.

Front

What is the purpose of chromatography?

Back

To separate and analyze the components of a mixture.

Front

What is a chromatogram?

Back

A visual record of the separation of components in chromatography.

Front

What does it mean if a pure substance shows one spot on a chromatogram?

Back

It indicates that the substance is pure and consists of only one component.