Calcium ion is also an important coagulation factor, which participates in the coagulation process. If there is no calcium ion, it means that once the bleeding is difficult to stop, it may eventually die of excessive blood loss. Finally, calcium ion is an important component of human bones. Without calcium ions deposited on bones, there is no scaffold function of bones, and human beings can't walk.
Chemical properties:
When heated, it directly reacts with most nonmetals such as sulfur, nitrogen, carbon and hydrogen to generate calcium sulfide CaS, calcium nitride Ca3N2, calcium carbide CaC2 and calcium hydride CaH2, and reacts with carbon dioxide when heated. ?
The chemical properties are active, and an oxide or nitride film can be formed on the surface in air, which can slow down further corrosion. It can be oxidized to produce calcium oxide, nitrided to produce calcium nitride Ca3N2, which combines with fluorine, chlorine, bromine and iodine to produce corresponding halide, and reacts with hydrogen at 400℃ to produce calcium hydride. It reacts with water at room temperature to generate calcium hydroxide and release hydrogen, reacts with hydrochloric acid and dilute sulfuric acid to generate salt and hydrogen, and reacts with carbon at high temperature to generate calcium carbide CaC2. Almost all metal oxides can be reduced when heated, and many metal chlorides can also be reduced when melted.
Refer to the above? Baidu encyclopedia-calcium ion