Lead - Wikipedia
Lead (pronounced "led") is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue.
Lead: What It Is, Properties, Importance, Uses, and Advantages
2023年8月8日 · Lead is the chemical element represented by the symbol Pb and possesses the atomic number 82. It is a heavy metal with various properties that have made it useful for a range of applications.
Lead | Definition, Uses, Properties, & Facts | Britannica
2024年12月10日 · Lead, a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable, ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the oldest of metals, lead is highly durable and resistant to corrosion.
Lead Prevention - Jefferson County, CO
Lead is a metal found naturally in the earth’s surface. Lead can also be produced from burning fossil fuels, manufacturing and mining. Lead is used to produce many items such as batteries, pipes and metal parts for machinery.
Lead and health - Department of Public Health & Environment
Lead is a type of metal that is found naturally on Earth. Lead is in all parts of our environment -- the air, the soil, and our homes. While it has some beneficial uses, lead is toxic to humans.
Lead | History, Uses, Facts, Physical & Chemical Characteristics
Lead is a prehistoric metal and was used by people of ancient Rome and Western Asia around 7000 BCE. It was widely used to make water pipes by the Romans and named it as plumbum nigrum (black lead). The use of lead decreased with the fall of the Roman Umpire.
Lead - Encyclopedia.com
2018年5月23日 · Lead — a metal that archaeological discoveries prove was used at least 5,000 years ago — is the heaviest element in Group 14 of the periodic table, a group often known as the carbon family.
A Brief History of Lead Properties, Uses and Characteristics
2020年1月20日 · Lead is a soft, gray, lustrous metal with a high density and low melting point. Although hazardous to our health, humans have been extracting and using lead for over 6000 years. Properties
Lead - Simple English Wikipedia, the free encyclopedia
Lead (pronounce: "/'lɛd/") is a chemical element. Its chemical symbol is Pb, which comes from plumbum, the Latin word for lead. [6] . Its atomic number is 82, atomic mass is 207.2 and has a melting point of 327.8°C.
5 Types of Lead Metal and Their Uses - ThePipingMart Blog
2023年6月8日 · Lead metal is one of the most essential elements in chemistry. It has been used for centuries to make various products, including bullets, batteries, and radiation shields. There are different types of lead metal, each with its unique characteristics and properties.