1 Features: Al is a silvery-white lustrous light metal, iron about 3 times lighter. Al is a mechani

Prevalence Aluminium: Al is a third element to the spread and the metallic elements of the first members (8.8% by weight of the Earth's crust). Found not only in activity as a result of the chemical rtd compounds. Al is the most important minerals, aluminum oxide, and hydrated forms thereof. Waterless colorless corundum Al2O3 occurs. Precious stones rtd ruby (1) sapphire, rtd and (2) Errors are corundum which contain contaminating.
1 2 Detection, Becoming: It was discovered in ancient Rome. First isolated the metal in the Danish physicist Hans Christian Oersted in 1825. year. Today, aluminum is produced electrolytically (электролитически). The most important ore in the production of Al (руда) are bauxite (1).
1 Features: Al is a silvery-white lustrous light metal, iron about 3 times lighter. Al is a mechanically permanent, a good electrical conductor and a good heat conductor. rtd Al is chemically active metal. Upon heating rtd (нагрев) it reacts with oxygen, the reaction is highly exothermic and the temperature rises up to 3000 C. 4Al + = 3О2 2Al2O3 ΔH = -3344 kJ runs halogens (происходит) Al-fusion, even at room temperature: 2AL + 3Cl2 = 2AlCl3 (aluminum), high-temperature Al reacts with the sulfur, nitrogen, carbon and phosphorus: 3S 2AL + = Al2S3 (alumiiniumsulfiid) 4Al + 3C = Al4C3 (alumiiniumkarbiid) Al reacts with water at temperatures above 180 C: 6H2O + 2AL = 2AL (OH) 3 + H2SO4 and HNO3 3H2 kontshapetega Reactions: 6H2SO4 2AL + = Al2 (SO4) 3 + 3SO2 + 6H2O H2NO3 passivated (пассивирует) aluminum at room temperature, allowing the transport of nitric oxide generated thick Al-tanks. Uses: Al-Mn alloy radiators are made of transport. Bio food: Al-salts due to its antiseptic properties disinfect their wounds and used kompressivedelikuna (примочка), Al-hydroxide is used to treat excess stomach acid (повышенная кислотность), respectively. Interesting fact: 19 middle of the century was considered more precious metals and Al 1854th The price was 1.2 grams of gold rubles.
Detection, Becoming: Features: Copper is a reddish-colored, forged, rolled and wired retractable metal. Cu has a very good electrical and heat conductivity, but the reduction in metallic impurity content, the electrical conductivity of the copper is significantly reduced. Uses: Because copper is an excellent conductor of heat and electricity, are made of the electrical wiring and heat exchangers. Bio food: Copper is an important trace element biometall, which is involved in metabolic rtd processes. In the human body is approximately 72 mg of Cu. The food is obtained of 0.5 to 6 mg per day for Cu. Cu content is greater in the liver, brain, heart and bone. Interesting fact: The folk wisdom suggests that the old copper coins made of rings, bracelets and chains to cure rheumatism, gout, and liigesepõlestikku.