Properties of Zinc

• Physical properties: Zinc is a moderately reactive metal. It has a melting point of 419.5°C and a boiling point of 907°C. It is a good conductor of electricity.
• Chemical properties: Zinc reacts with oxygen in the air to form zinc oxide. It also reacts with acids and alkalis. Zinc is commonly used as a sacrificial anode in cathodic protection, which prevents corrosion of metal surfaces.

Uses of Zinc

Zinc has a wide range of uses, including:

• Galvanizing steel to prevent corrosion
• Manufacturing brass and other alloys
• As a component in batteries
• In sunscreen and cosmetics as a UV protectant
• In dietary supplements for its essential role in human health

Biological Role of Zinc

Zinc is an essential trace element for all forms of life. It is important for a healthy immune system, wound healing, and the senses of taste and smell. Zinc also plays a role in DNA synthesis and cell division.

Study Guide

When studying zinc, consider the following key points:

1. Understand the physical and chemical properties of zinc, including its reactivity and common compounds.
2. Learn about the various uses of zinc in industry, technology, and everyday products.
3. Explore the biological role of zinc in the human body and its importance for overall health.
4. Examine the environmental impact of zinc and its role in corrosion prevention.