People paymuch attention to the poisoning of industry salts. This papermakes a comparison between table salt and industrial salts, latter contain NaNO₂, introduces the harm of industrial salts to human health, the causes of poisoning and the preventingmeasures, and discusses the methods to distinguish table salt and industrial salts.

Cleaning coal technology deals with technologies of treating coal with modern science and technology and reducing the environmental pollution. Itmainly includes the technologies of removing organic sulfur from coal. gasifying coal and in liquefying coal. The development and use of cleaning coal technology are one of the significant projects in green chemistry and in carrying out the strategy of sustainable development. It has great significance in carrying forward the sustainable development culture, and in social development, economic prosperity and environmental protection.

Because ionic liquids are apt to be utilized circularly, their use can reduce the pollution to environment. As green solvents, the ionic liquids can be applied to separating process, chemical reactions, specially the catalytic reactions, and electrochemistry, etc. This paper introduces the classification, synthesis, physical and chemical properties and applications of the ionic liquids in brief.

Emotion art for chemistry teaching. and cognition art is awhole, which is themeans to carry out the targetof courses, the unity ofpurpose andmeans, and the unity of identity and too.Ithas functions such as motivation, regulation, move, infection, creation, etc. It can be put in practice by strategies such as language emotion, physique emotion, exceeding expectation, aesthetic experiment, emotion encourage etc.