Zinc

Zinc is a chemical element with the symbol Zn and atomic number 30. It is a bluish-white metal and is found in group 12 of the periodic table.

Physical Properties of Zinc

• Atomic number: 30
• Atomic mass: 65.38
• Melting point: 419.5°C
• Boiling point: 907°C
• Density: 7.14 g/cm3

Chemical Properties of Zinc

Zinc is a moderately reactive metal. It readily forms compounds with other elements, and reacts with acids, alkalis, and other non-metals. It does not react with water. Zinc is known for its ability to undergo galvanization, a process of applying a protective zinc coating to steel or iron to prevent rusting.

Uses of Zinc

Zinc is commonly used in a variety of applications, including:

• Galvanization of steel
• Production of brass and bronze
• As a component in batteries
• In the production of zinc oxide, which is used in rubber manufacturing, ceramics, and as a pigment in paints
• In dietary supplements and as an ingredient in various pharmaceutical products

Study Guide

To understand zinc better, consider the following questions:

1. What are the physical properties of zinc? Describe its appearance, melting point, boiling point, and density.
2. How does zinc react with acids, alkalis, and other non-metals? Provide examples of zinc compounds.
3. What is galvanization, and how does zinc play a role in this process?
4. What are the common uses of zinc in everyday life and industry?
5. How is zinc important in biological systems and human health?

By exploring these questions, you can gain a comprehensive understanding of the properties and uses of zinc.