To control pollution from the beginning of the ban on sources of pollution; human beings to have a global village point of view, to control pollution to the global *** with the action; the rational use of chemical substances; science plays a decisive role in preventing and controlling pollution; pollution control of the longer time, the cost of a larger; Chemistry is a double-edged sword, can benefit mankind, but also can bring disaster to mankind. Zinc-manganese dry cell structure, it is the center of the carbon rod (graphite) as a positive pole, the periphery of the zinc tube as a negative pole, zinc tube and carbon filled with ammonium chloride solution (as electrolyte) mixed with wet manganese dioxide and graphite, graphite does not take part in the chemical reaction, only conductive role. In the use of the battery, zinc gradually become zinc chloride. A waste battery, observed the following phenomena: ① black carbon rods intact; ② electrode filled with black powder around; ③ inside a small amount of colorless crystals; ④ metal shell obviously broken. This question to zinc-manganese dry cell as a material for investigation, with a multi-faceted investigation, knowledge is relatively discrete and relatively open features.
The answer is: (1) copper, zinc (2) favorable recycling of waste, to prevent manganese dioxide and paste pollution of the environment.
The answer is: (1) copper, zinc