Chemistry is the science of the elements and how these elements combine to form compounds. Although there are more than 10 million chemical compounds, in fact only less than one hundred elements found in nature. The workers in the Bronze Age 5,000 years ago is a chemical which experts first. They found a way to change tenbaga rock ore from the ground into metal. Some 1,500 years later, the chemists in Egypt seeks to change the basic metals, like lead into gold. Although no one among them who managed to make gold, a technique they use provide the basis for modern chemistry research. Since then, humans have been studying the behavior of the material and make a large amount of important material for modern technology.
The chemical industry provides a concrete, metal, and plastic to build buildings, make machinery and vehicles, fuel for transportation, and heating; synthetic fibers for clothing, fertilizer and pesticides to increase crop yields. Chemical knowledge enables man to produce silicon with high purity level, which is useful for making microprocessor Bio chemistry helps us understand the processes occurring in living organisms, chemical and pharmaceutical dispensing of drugs to treat disease, even for many diseases that used to not be healed.