Question

Кальций физические свойства

Answer 1

Кальций - серебристо- белый металл, который плавится при температуре 850 градусов С и кипит при температуре 1482 градуса С

Answer 2

Calcium: Physical Properties

Atomic Weight and Density: Calcium has an atomic weight of 40.078 u and a density of 1.55 g/cm³ at 20°C.

Melting and Boiling Points: The melting point of calcium is 842°C, and its boiling point is 1484°C.

Crystal Structure: Calcium has a face-centered cubic crystal structure at room temperature and atmospheric pressure.

Electrical Conductivity: Calcium exhibits electrical conductivity, and its electrical resistivity at 20°C is 0.0014 Ω·cm.

Chemical Properties: Calcium is a reactive metal and forms various compounds, including calcium carbonate (CaCO3) It also reacts with water to produce calcium hydroxide and hydrogen gas.

Role in Biological Systems: Calcium plays a crucial role in biological systems, including muscle contraction, nerve function, and blood clotting.

Abundance in Earth's Crust: Calcium is one of the most abundant elements in the Earth's crust, and it is essential for various industrial and biological processes.

These physical and chemical properties make calcium a vital element in both industrial and biological contexts.