Classes of Chemical Reactions :: essays research papers

Classes of Chemical ReactionsWhenever a reply takes place, energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more just near the nature and tendencies of matter. In this lab, the purpose was to perform seven reactions, write grim their equations, and identify the type of reaction. In this lab report, several methods of displaying this information volition be applied.Synthesis1.A piece of Magnesium was obtained at about two centimeters in length. The level was thin and easily bent or twisted. It had a aluminiferous surface and was brittle. It was silver in color. A cremate from a Bunsen burner was held to the Mg, and it ignited, giving off a brilliant fair light. Looking directly into the light resulted in temporary blindness, which would explain the warning on the procedures that strongly suggested not looking directly into the light. Af ter the fervidness had extinguished itself due to lack of fuel, the Mg had turned from a metallic strip to an off-white powder, which crumbled at the slightest irritation. The magnesium had bonded with the oxygen gas in the air from the energy that was applied to it and make magnesium oxide. The type of reaction was a synthesis reaction, as is shown by this equation.2Mg(s) + O2(g) = 2MgO(s) 2.A piece of grunter was obtained. It was a small, rounded wire that could be bent, although with a greater hindrance than the Mg strip from the previous account. It was copper in color (never motto that one coming, didja) and had a metallic luster. The copper was put in the consume of a Bunsen burner and after several seconds, it began to blacken. The flame was applied to it for about a minute and a half, and the copper appeared silvery under keen heat, but when it was removed from the flame, the silver color quickly faded. The copper strip was now black all over, and the change in color suggested that a chemical change had occurred. The Cu had reacted with the oxygen in the air and formed copper oxide. The black color could be scraped off, but only in small slivers. It would crumble when it was irritated with a great deal of pressure, respectively. It was a synthesis reaction as displayed by the equation here.Cu(s) + O2(o) = CuO2