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Chemistry Iron, steel and other metals can be protected from corrosion by covering the metal surface with a thin layer of ink-insulating it from moisture and oxygen or a layer of another metal (chrome, nickel, copper, silver, , zinc, tin). If the metal used is more reactive than the metal that will be secured before it will oxidize. For example, the hulls of ships, co- LOCAM to zinc plates, which oxidizes more easily than iron. Zinc, in case it's Chamdo "sacrificial metal" and the technique works as long as the metal oxidizes rather be replenished as it is being consumed. Such as iron or steel may be protected by zinc (zinc) because they suffer surface cracks, the zinc metal is more reactive (oxidation potential is greater than the atom of iron or steel) will react to form a first film Zn (OH) on the surface. This compound, which does not dissolve in water, functions as an anode (positive -) in this example is metal and the cathode (positive). The protection of a metal with another metal is a process known as galvanizing The fillings also protect the tooth that has been eroded by the acids produced by the action of bacteria on food debris present in the mouth. Amalgams, batteries and accumulators do not cause environmental problems when they are being used or stored in our homes, but cause a serious problem when they become waste and end up in landfills in our cities. These objects cause environmental problems because the materials used in its composition are heavy metals (high density), mercury (Hg), lead (Pb), cadmium (Cd) and arsenic (As), which end up being retained in the soil and under the water our rivers, contaminated nando them, thus causing health problems for the living. As free elements is not toxic but in the form of positive ions (cations) in solution and when long sequences are linked to carbon atoms (organic compounds) are. Mercury is used in some types of cells as the hearing aids and flashes. When discarding, they can be burned as waste gas and mercury goes to atmosphere. Do not forget that the crowned tooth with amalgam also has mercury. Most of the mercury is found in the air as ion Hg , vapors are dangerous attack the central nervous system, may also affect the kidneys and liver and also the development of the fetus.
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Kemija Željezo, čelik i drugi metali mogu biti zaštićeni od korozije pokrivanjem metalnu površinu tankim slojem tinte-izolacijski ga od vlage i kisika ili sloj drugog metala (kroma, nikla, bakra, srebra, , cink, kositar). Ako se koristi metal je više reaktivan od metala koji će biti osiguran prije nego što će oksidirati. Na primjer, trupove brodova, co- LOCAM da cink ploče, koja oksidira lakše od željeza. Cink, u slučaju da je Chamdo "žrtveno metal" i tehnika radi dok metal oksidira, a može puniti kao što se konzumira. Kao što su željezo ili čelika, može biti zaštićen cinka (cink), jer oni pate površinske pukotine, cink metal je više reaktivni (oksidacija potencijal veći od atoma od željeza ili čelika) će reagirati da se formira prvi film Zn (OH) na površini. Taj spoj, koji se ne otapaju u vodi, djeluje kao anode (pozitivno -) u ovom primjeru je metal i katode (pozitivno). Zaštita od metala s drugim metala je postupak poznat kao galvanizacije U plombe i štititi zub koji je razorena od strane kiselina proizvedenih djelovanjem bakterija na ostataka hrane prisutan u ustima. Amalgama, baterije i akumulatori ne uzrokuje probleme u okolišu kada su se koristili ili skladištili u našim domovima, ali izazvati ozbiljan problem kad postanu otpad, a završiti u odlagališta otpada u našim gradovima. Ovi predmeti uzrokuje probleme u okolišu, jer su materijali korišteni u sastavu su teški metali (visoke gustoće), živa (Hg), olovo (Pb), kadmij (Cd) i arsen (As), koji se do kraja se zadržava u tlu, a pod vodom naše rijeke, kontaminirana Nando ih, na taj način uzrokuje zdravstvene probleme za život. Kao slobodnog tijela nije otrovan, ali u obliku pozitivnih iona (kationa) u otopini i kada duge sekvence su povezani s atoma ugljika (organski spojevi) su. Merkur se koristi u nekim vrstama stanica što su slušna pomagala i bljesak. Kad odbacujući, oni mogu biti spaljen kao otpadnog plina i živa ide u atmosferi. Ne zaboravite da je okrunjena zub s amalgamom također ima živu. Većina žive nalazi se u zraku kao ion Hg , pare su opasni napada središnji živčani sustav, također može utjecati na bubrege i jetru, a također i razvoj fetusa.