Zinc

Zinc is a chemical element with the symbol Zn and atomic number 30. It is a bluish-white, lustrous metal with a low melting point and good corrosion resistance. Zinc is found in the Earth's crust and is essential for all living organisms, making it an important element for various biological processes.

Properties of Zinc

Some key properties of zinc include:

• Melting Point: 419.5°C
• Boiling Point: 907°C
• Density: 7.14 grams per cubic centimeter
• It is a relatively reactive metal, forming a protective layer of oxide on its surface when exposed to air.

Uses of Zinc

Zinc has a wide range of uses, some of which include:

• Galvanizing other metals to protect them from corrosion
• As an alloying agent in the production of brass and bronze
• In the production of various chemicals and pharmaceuticals
• In the manufacturing of batteries
• In the production of sunscreen, as zinc oxide provides protection against UVA and UVB rays

Zinc in Biology

Zinc is an essential trace element for all living organisms. It plays a crucial role in various biological processes, including:

• Enzyme function
• Immune system function
• Wound healing
• DNA synthesis
• Growth and development

Study Guide

Here are some key points to remember about zinc:

1. Zinc is a chemical element with the symbol Zn and atomic number 30.
2. It is a bluish-white, lustrous metal with a low melting point and good corrosion resistance.
3. Zinc is used for galvanizing other metals, as an alloying agent, in chemical production, and in various other applications.
4. In biology, zinc is essential for enzyme function, immune system function, wound healing, DNA synthesis, and growth and development.
5. Zinc is found in the Earth's crust and is an important element for all living organisms.