(1) Titration in analytical chemistry: including acid-base titration, complexometric titration, redox titration and precipitation titration; Instrumental analysis includes gravimetric analysis, absorption spectrophotometry (2) ultraviolet spectrometry, mass spectrometry, potentiometric analysis, chromatography and so on.

Organic chemistry mainly talks about the chemical properties and reaction principles of organic compounds, including olefins, halogenated benzene, phenol and so on.

Inorganic chemistry is of course the nature of various elements, and there are some simple chemical knowledge: reaction rate, VSPER theory, Nernst equation and so on.