In this type of chromatography there isn’t any interaction, physical or chemical, between the analyte and the stationary phase. Small molecules get trapped in the pores of the stationary phase, while large molecules flow through the gaps between the beads and have very small retention times. Glass column is packed with slurry of silica Glass is coated with thin layer of silica on which is spotted the compound (For a more in-depth discussion of physical chemistry, see chemistry: Physical chemistry.) The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Erik Gregersen.Compound spotted directly on a cellulose paper Subdisciplines of physical chemistry include electrochemistry, photochemistry ( see photochemical reaction), surface chemistry, and catalysis. Chemical thermodynamics deals with the relationship between heat and other forms of chemical energy, kinetics with chemical reaction rates. Quantum mechanics has clarified much for physical chemistry by modeling the smallest particles ordinarily dealt with in the field, atoms and molecules, enabling theoretical chemists to use computers and sophisticated mathematical techniques to understand the chemical behaviour of matter. Unlike other branches, it deals with the principles of physics underlying all chemical interactions (e.g., gas laws), seeking to measure, correlate, and explain the quantitative aspects of reactions. Physical chemistry, branch of chemistry concerned with interactions and transformations of materials. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them!
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