Introduction to the poem on redox reaction 1. How to introduce redox reaction before class?
The classification of analytical chemical reactions is introduced.
Redox reaction (also called redox reaction) is a reaction in which the oxidation number of elements changes before and after chemical reaction. The essence of redox reaction is the gain and loss of electrons or the deviation of electron pairs. Redox reaction is one of the three basic reactions in chemical reactions (the other two are Lewis acid-base reaction and free radical reaction). Combustion, respiration, photosynthesis in nature, chemical batteries in production and life, metal smelting, rocket launching and so on are all closely related to redox reaction. The study of redox reaction is of great significance to human progress.