User:Section-d rimsha/sandbox

METALS AND NON METALS
Elements may be classified as either metals or nonmetals, based on their properties. Here's a look at the differences between the metals and nonmetals.

=METALS=

A group of elements in the periodic table is called metals. These elements usually have the following properties: 1.They can conduct electricity and heat. 2.They can be formed easily. 3.They have a shiny appearance. 4.They have a high melting point.

Most metals are solid at room temperature, but this does not have to be the case. Mercury is liquid. Alloys are mixtures, where at least one part of the mixture is a metal. Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc. Well-known alloys include bronze and steel.

The study of metals is called Metallurgy

=NON METALS=

In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks metallic attributes. Physically, nonmetals tend to be highly volatile (easily vaporised), have low elasticity, and are good insulators of heat and electricity; chemically, they tend to have high ionization energy and electronegativity values, and gain or share electrons when they react with other elements or compounds. Seventeen elements are generally classified as nonmetals; most are gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon); one is a liquid (bromine), and a few are solids (carbon, phosphorus, sulfur, selenium, and iodine).

=PROPERTIES OF METALS= •lustrous (shiny) •good conductors of heat and electricity •high melting point •high density (heavy for their size) •malleable (can be hammered) •ductile (can be drawn into wires) •usually solid at room temperature (an exception is mercury)

=PROPERTIES OF NON METALS= •not lustrous (dull appearance) •poor conductors of heat and electricity •non ductile solids •brittle solids •may be solids, liquids or gases at room temperature •transparent as a thin sheet •nonmetals are not sonorous