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Lead
I. Introduction : Lead: Air pollution is a serious problem today. There are countless different pollutants that contribute to the pollution of our air. Air pollution is a growing problem. Though we have found solutions for many of our air pollution substances, it is not enough to compensate for all pollution around us. One big contributor to air pollution is lead. Lead is a metal that is present in the environment mainly as a result of industrialization. It can be present in water, soil, but generally in air. Lead is useful for many things today and its use dates back to centuries ago. Although it has its advantages, it has more disadvantages. Lead contributes greatly to the problem of air pollution today. It is a persistent, bioaccumulative, and toxic chemical. Also, at one point, lead polluted water greatly. Since better filtering systems have been made, water pollution, in water pipes, caused from lead is rare now. II. Main Information: Properties of Lead: Lead is extracted mainly from galena. It can be present as gas or solid (metal). Lead has several properties that make it unique; it is very malleable and can be hammered into any shape. It is a soft, bluish-white, dense metallic element. It can be very easily melted and joined. Lead has good corrosion resistance in most common environments. Lead’s high density has been proved effective in weights. It’s ductile and is relatively a poor conductor of electricity.
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