The Versatility of Glass

Glass is a versatile material used in many objects due to its unique properties. It has a long history, dating back to ancient Mesopotamian and Egyptian times, where obsidian was used. Modern glass is made by heating silica with soda ash and limestone. Various types of glass serve different purposes, such as clear glass for windows, thermal glass for cookware, and bullet-resistant glass. Glass can also be colored and is 100% recyclable, making it a sustainable choice for containers.

Describe the process of how glass is formed.

What are some examples of colored glass items?