First: metals
Metals definition
It means chemical elements which loses electrons to be positive ions and find the Association of metal between Darath. As it is described metals also as a network of positive ions within the cloud of electrons.
The whereabouts of the metals
1. There are some metals such as gold, copper and silver in the rock elements free.
2. Most metals have one or two or three electrons in the outer shell can be easily shared with other atoms.
3. The metal atoms are connected to each metallic Association.
4. The metal atoms are detached, the electrons of these atoms are cloud revolve around these atoms.
5. electrons do not follow any specific nucleus but is free moves from the nucleus to the other and then return her again.
Metal components
The alloy material is composed of metal element and another one at least. Most alloys contain a large amount of the main metal or metal base, and smaller quantities of other ingredients. Which may be metals or non-metals such as carbon and silicon. And many of the pure metals are very soft. Or rust easily. Or by other defects. But these disadvantages can be overcome by mixing these metals with other elements. Per ingot it may contain three or four different materials. Or more.
The emergence of metals in the Earth's crust
Most of the metallic elements that we know and show, in the earth's crust, in the form of vehicles and not in metallic case that we know veneer floor, for example, contains 8 aluminum 5-iron and 4 of the calcium has been found in the earth's crust on some rare metals and least interaction in metallic case and these metals, copper, gold, mercury, plutonium and scientists believe the nucleus of the ground I made up mainly of iron and nickel in the metal case.
Properties of metals
1. have a metallic luster. 2. good conductors of heat and electricity.
3. malleable love. 4. relatively high melting point.
The importance of metals
Metals used in bridges, ornaments and cooking utensils, cars and steel and other materials industry.
Second, non-metals:
Definition of non-metals
Characterized by certain characteristics in terms of ionization and bonding properties and keep track of this non-metals that high electronegativity, ie they gain valence electrons from other atoms faster than the lost.
The whereabouts of non-metals
: -
Most of the non-metals are found in the top left side Manaljdol league, while Aadaalheidrojinwalve is placed usually inTop right side Amaafilzac alkaline, but acting Mthelallavlzat in most cases. Unlike nonmetals metals in terms of electrical conductivity, Fahiamaazlh or semi-conductive. And you can make Allavlzatpetkoanrabotth Oaonahma metals Bakedzabalaketronat, or Tkonrabotth Tzhmahma no other metals. And Tkonokasidallavlzathamadah.
Although there are 12 known component of non-metals Palmgarnhpma more than 90 of the metals, non-metals make up the Mazmalordtgariba, especially the outer layers. It consists Alcainatalehih almost all of the non-metals. Many of the non-metals and hydrogen there, nitrogen, oxygen, fluorine, chlorine, bromine, iodine Dziamzdug in the case of corn, and the rest mostly there Faihalh Dzeiaadidaldhirat.
The properties of non-metals
1. do not have a metallic luster. 2. Non-ways and clouds.
3. poor conductors of heat.
4. relatively low melting point.
The importance of non-metals
1. Oxygen: Patient Aid, cylinders and scuba diving, and welding operations.
2. Graphite: making positive electrodes dry columns.
3. Diamonds: jewelery industry.
The types of non-metals
Solid, such as carbon, sulfur and phosphorus.
Liquid such as bromine.
Invader, such as oxygen, hydrogen and chlorine
