Study On The Acidity AG Replaces PH In The Chemical Teaching Of Middle School

According to the acidity AG put forward by Henk Von Lubeak, Holland scientist , in 1999, the paper discussed the application of the AG in Chemistry course (high school Chemistry)and teachings, deduced the calculation formula of AG, and put forward the measurement method of the acidity AG. Summarizing the application of pH in chemistry course and the teachings, We discovered that there existed many obvious shortages with pH to present material in the aqua of sour alkaline. With the guidance of modern education psychology theories, We studied the acidity AG replacing pH in high school chemistry teachings experiment(junior middle school and senior high school) and opening the exhibition in hightly first chemistry "the sour alkaline in aqua means the method research" study theaching. The results showed that using AG replace pH to express the material in aqua of the sour alkaline, have many obvious advantages, and overcome all shortages of pH . Therefore,we suggested that material in the aqua of sour alkaline should be expressed by the AG in chemistry course and the teachings, and proposed the method and the step of using AG in stead of pH to express material in the aqua of sour alkaline in the chemistry teachings.