Zinc is a blue-white metal. The density is 7.14 g/cubic centimeter and the melting point is 419.5℃ . At room temperature, it is brittle; it softens at 100 - 150℃; and becomes brittle after exceeding 200℃. The chemical properties of zinc are active. A thin and compact zinc carbonate film is formed on the surface of zinc carbonate in air at room temperature, which can prevent further oxidation. Zinc oxidation is intense when the temperature reaches 225℃.
Zinc is easy to dissolve in acid and replace gold, silver and copper from solution. Zinc exists mostly in sulfide state in nature. The main zinc mineral is sphalerite. There are also small amounts of oxidized ore, such as smithsonite, such as smithsonite and heteropolar ore.