Glass is a transparent material made by heating sand, soda, and lime until they melt together. Once cooled, it becomes a solid that can be shaped into various forms, like windows, bottles, and even art pieces. Its clarity allows light to pass through, making it a popular choice for many everyday items. There are different types of glass, such as tempered glass, which is stronger and shatter-resistant, and stained glass, known for its colorful designs often found in churches. Glass is also recyclable, making it an eco-friendly option for packaging and construction.