Ordinary glass is manufactured by the composition ... of chemical durability and more thermal inmalleable resistance power. Lead crystal glass: This is a special type of glass which is used ...

More than 4,000 naturally occurring minerals—inorganic solids that have a characteristic chemical composition and specific ... Chalcedonies include many types of cryptocrystalline quartz gems ...

Biochemistry explores chemical processes related to living organisms. It is a laboratory-based science combining biology and chemistry. Biochemists study the structure, composition, and chemical ...