Classification of Elements

Metals, Nonmetals, Metalloids by Mrs. Cindy Faulk


Elements are one of the basic substances that are made of atoms of only one kind and that cannot be separated by ordinary chemical means into simpler substances There are over 100 elements. These elements are arranged by their number of protons into a chart called the periodic table. The elements can be classified as metals, nonmetals, or metalloids. Each type of element can be found grouped together in a specific location on the periodic table,
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Metals - They are usually solids, strong and hard at room temeprature. The notable exception is mercury, which is a liquid metal. They are generally shiny, silvery in appearance when freshly cut. Some metals tarnish when expose to air (due to reaction with oxygen in air). They are malleable, that is, can be worked (bent, hammer so on) into a variety of shapes. They are also ductile, for example, can be drawn into wire. Metals are generally good conductors of heat and electricity
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