It is reacting with the exterior of the buildings steel. It is handled here in small quantities. It also reacts with paper; after some time paper turns yellow.
211637
It's not been studied a lot simply because it's not very common. \n\nStudies in general have found it to not be particularly toxic; in fact, it's been studied as a possible co-agent in treating malaria with chlorquinine. A study in dogs fed them 30mg/kg for 6 months with no detected toxicity.\n\nOne study did find that inhalation of highly-concentrated amounts caused epithelial lesions in the nose and throat, but in general, it's considered safe at low concentrations. As in any case where you don't feel comfortable with chemical exposure, contact OSHA.
547920
The spark in the presents of oxygen starts a chemical reaction with the paper that breaks the molecules apart releasing energy.
41962
It is just from the way that the elements are fused together to form the compound. It's the same as any other metal.
488217
"The final experiment was to observe the reaction when one small crystal of NH4SCN was added to 0.1 M FeCl3. The color of FeCl3 was yellow, but after NH4SCN was added, the color of contents changed to red.\nIn second experiment, when the Mg was ignited, the resulting flame was hot. Therefore, the release of thermal energy through the interaction of Mg and O was shown.\nFiguring out the type of the last two reactions was difficult, because the chemical equations were not given. However, the possibility that the type of both reactions were replacement reactions was high. The reason being that the chemical reactions were observed as a color change and this means that the composition of the substance is changed.\nThis experiment was very successful, and it was a good opportunity to observe chemical reactions directly."\n\nI would change your paragraph to that.  I would also expand on the other experiments if you know more about them.
37841
it gets hot, which in turn causes more resistance, and it gets even hotter, which causes more resistance.  if there are enough amps, the metal will melt.
499758
It is absorbed as heat.
328387
Wild guess here... a dihydrate of copper chloride.\n\nSecond guess would be copper sulfate, possibly from the manufacturing process.
409668
because its turning with a lot of force
85979
What are you asking about these reactions?
449812
For every action there is an equal and opposite reaction.\n\nThe smaller object gets busted, as is your question.
8389
It is a clear liquid.
472345
1) Litmus is red in acid, blue in base...so it would turn red in rainwater (which is sl acidic, more or less depending upon atm contamination), blue in ammonia.\n2) AgCl precipitates out...KCl + AgNO3--->AgCl(ppt) + K+ + NO3-\n3) Zn is more active than Fe, so it plates out at the expense of Fe...Zn(+2) + Fe--->Zn(ppt) + Fe(+2)\n4) Depends on the type of battery...for the lead/acid type it is a reversible reaction between PbO in the plates and the H2SO4 electrolyte (in overly simple terms)\n.....Discharge: 2H(+) + SO4(-2) + PbO--->PbSO4 + H2O\n.....Charge: PbSO4 + H2O--->PbO + 2H(+) + SO4(-2)
569418
Many supplements cause that to occur, don't worry about it.   I think it's the food coloring in it.  I bet it has a strange smell to it also.
38571
the metal is simply not exposed to the outside oxygen - it is shielded from it by the paint, which itself contains little, if any oxygen
658035
Possibly the material underneath the stainless is corroding and the rust found a way through. It's not necessarily solid stainless steel.
49858
You haven't provided us with enough information. This is a steel beam, not an iron beam. Steel can be an infinite number of different compositions and even different alloys. Each will respond differently to chnegs in temperature.
392543
Depends upon what kind of heat-treatment was given to the steel