College entrance examination chemistry. Eight multiple-choice questions, generally: STS (environmental protection first), ion reaction (equation judgment and * * * existence only 1), thermochemical equation, quantity of matter (NA constant is a big problem, followed by molar volume of gas, and pure chemical calculation is rare), material structure (atomic structure first, crystal second) and periodic table of elements (required) Chemical balance (image first, activity balance second), ionization balance (salt hydrolysis first, mainly ion concentration and conservation, followed by pH problem), electrochemistry, organic chemistry (mainly complex organic matter property judgment, followed by isomers), experiment, calculation, element compounds have little chance of entering multiple-choice questions, and colloids can be ignored. Four non-multiple choice questions, inorganic inference (block diagram inference takes precedence, text inference takes precedence, metal inference takes precedence, but it may change in 2009, so pay attention to nonmetals), organic chemistry (there may be complex organic property analysis in 2006, but it is more likely to be an inference question, and the probability of block diagram and text inference is equal), chemical experiment (bottle and can combination is very likely, refer to 2007), chemical industry (new type, new type)