How long does it take steel to decompose? What is tin made of?How does tin pollute living things?
212595
Steel does not decompose.  It turns into rust by oxidation; that is, it is an irreducible element that joins with oxygen, another irreducible element, into ferric oxide [rust].  How long this takes depends on a lot of things, like the thickness of the steel, the amount of water available for the oxidation, the amount of oxygen available, what kind of environment it is in...\n\nTin is not made of anything, it is an irreducible element in itself.  By itself it is not toxic, or has very little toxicity.  But when combined with other things, the combination can have poisonous effects, damaging various organs such as liver, brain, blood...
225101
Amino acids.\n\nOH, I thought you asked what they are made OF. Sorry - Ribosomes!
377491
Aluminium is a chemical element and metal.\nAluminium nails would be nails made of this elements.\n\nCorrosion/rust is the contact of metals with oxygen (another chemical element and part of the air around us), the process is alled oxidation.\n\nThe best example is the metal iron reacting with oxygen from the air  and the result would be rust. (it works better with water as ths contains more of the element oxygen). The surface becomes reddish-brown and briddle, more oxygen can penetrate the metal and in the end the piece of metal breaks, "it rustes away".\n\nAlumumium does react withs oxygen but only on the surfcae, in common language you could say its "rusts". The surface than looks greyish.  But in comparison to iron this forms a protecting layer on the surface of the aluminum, no oxygen can get deeper and the aluminium stays stable.\n\nThat is one of the reason airplanes are made of a very pure aluminium. They should not rust.
552667
Steel is manufactured by alloying iron and carbon.  Stainless steel has a high nickle content.\n\nWikipedia Excerpt: Perhaps as early as 300 BC, although certainly by AD 200, high quality steel was being produced in southern India also by what Europeans would later call the crucible technique. In this system, high-purity wrought iron, charcoal, and glass were mixed in crucibles and heated until the iron melted and absorbed the carbon. One of the earliest evidence of steel making comes to us from Samanalawewa area in Sri Lanka where thousands of sites were found. (Ref. Juleff, 1996).
74197
Generally the kind of soil (wet/dry/acidic/basic) as well as the availability of oxygen will play a big role in how bones decompose. Some bones decay entirely others may get fossilized and keep for ages (though strictly speaking then it's not the original bone any more).\n\nif you don't find it to gruesome, this talks about human decomposition including decomposition of bones\nhttp://www.socgenmicrobiol.org.uk/pubs/micro_today/pdf/110108.pdf\n\nIf you look up bone decompositon you probably will find more, also if you look into forensics and anthropology. \nAt the university of Tenessee in Knoxville they have a well known forensics program and they study many aspects of decomposition, you may find some info there as well
206740
Air is oxygen and nitrogen and that those pressures would react to form nitrous oxide or something along those lines.  People have accidentally created very high pressures, for example in welding one can trap high pressure gas in the weld which can cause the weld to crack.  Another case is certain metals when used in nuclear reactors form gas in the millions of psi range (but in very tiny amounts), again leading to cracking.
380253
Mercury is toxic in several ways.\nAt room temperature is gives off a vapour (which can be seen if you shine an ultra-violet light onto a screen in front of which is a bowl of mercury). As a vapour it is quickly absorbed through the lungs.\nIt is absorbed through the skin but very slowly. Only a small proportion is absorbed by the digestive system if the metal is swallowed. You would have to take almost a table-spoon full to make you seriously ill or kill.\nMercury compounds are seriously poisonous especially soluble ones like the chloride. Organo-mercury are the worse as they are very readily absorbed into the tissues of the body.\nMercury is very good at replacing the trace metal elements in the body such as copper, cobalt, chromium etc. At autopsy it can be found in almost every tissue in the body.\nIt is slowly eliminated from the body taking about 70 days for half of it to leave and another 70 days for half of the remaining to go.\nIt causes a whole host of illnesses from loosening of teeth, mental disturbance and organ failure.
76292
an average human being start to decompose after 24-48 hours once the ATP supply of the muscles are depleted and the body begings to get rigor mortis. the time of decomposition greatly varies with where the body is lying and in which condition along with physical factors like temperature,humidity etc.
72895
Steel is iron that has most of the impurities removed. Steel also has a consistent concentration of carbon throughout (0.5 percent to 1.5 percent). Impurities like silica, phosphorous and sulfur weaken steel tremendously, so they must be eliminated. The advantage of steel over iron is greatly improved strength. \n\nTo answer your qestion, it should be about 95%. \n\nStainless steel contains at leat 10.5 % chromium (about 85% iron)
200977
It is chemical change. The material ( generally metal) gets oxidised when left in air and this is termed as rust.
26692
Oxygen in the atmosphere reacts with iron to oxidize it in what is called a redox reaction (oxidation/reduction).  The redox reaction is defined by the exchange of electrons--uncharged iron will lose two electrons to an oxygen molecule, creating iron oxide.  Water quicken rusting by serving as a catalyst.  Dissolved oxygen in the water reacts, and as the water dries, the oxygen becomes increasingly concentrated.\n\nShips will prevent wide-spread rusting by creating what is called a "sacrificial anode."  You might know the names anode and cathode from the ends of a battery.  Batteries function by employing two seperate redox reactions, where one end corrodes to release electrons, which travel to the other end and react with metal cations in solution, turning them to a solid metal.  In the case of ships, the corrosion of iron is prevented by creating a sacrificial anode out of something even more reactive than the iron (usually magnesium, if memory serves).  The corrosion of the magnesium releases excess electrons in the iron, which delays corrosion of the iron--oxyegn can grab the free electrons created by the corrosion of magnesium without needing to corrode the iron.\n\nI would imagine that the quickening of the rusting process cause by a scratch in the tin is due to the fact that the corrosion becomes concentrated in a single place.  The scratch likely serves as the "sacrificial anode" for the rest of the can.
293777
Plastic.(according to George Carlin)\n\nIt is the only thing that God didn't make. We created it.\n\nThusly, God created us so we can make plastic.\n\nhaving served our purpose, Judgement day will come soon. We just need to make more plastic.
165829
What year? Normally, steel outside. Plastic inside.
395752
the answer is organic ... things that are organic are made from once living things.... vote me for best answer :) hehe jk you dont have to. hope i helped
464825
It has to be iron.  Without Fe, there'd be no steel, and no civilization as we know it.  You COULD make steel-like alloys with elements like Ni, but they'd be too costly for widespread use.
171088
Please refer to :\nhttp://www.en.wikipedia.org/wiki/Manganese\nYou will get all the details you seek !
548709
Metals are reductants. that is they cause reduction in a reaction and are themselves oxidised. This means they must GIVE UP electrons. If you look at the periodic table, as you go down a group (say 1st gorup), atoms have more and more shells ( the outer which contains only 1 electron). As you know, the more shells there are, the lesser tehy will be bound to the nucleus (as they experience weak core charge). This means at the bottom of the 1st group, atoms will almost willingly get rid of its valence electron. So that's why as you go down a group, they are more metallic.\n\nAs you go from the left to the right of the PT, there are more electrons in the outer shell. THis means they more and more act as an oxidant (causing oxidation to others, but in turn gets reduced). Thus, they are less metallic