The laboratory materials are a group of objects, together with furnishings, equipment, reagents, among others, allow the proper functioning of this workspace. These materials depend on the reason, use or purposes for which these laboratories work. Labs are created to meet a certain goal. According to this, a laboratory can be service, teaching or research.
The chemical applied is the use of the theoretical and practical knowledge of chemistry to get the answer to a question posed, and solve a specific problem in our environment. Meanwhile, pure chemistry aims to increase knowledge in the field of chemistry. If a person wants to know if they have diabetes or not, they
The epoxides are aliphatic or cyclic hydrocarbons having in its structure an oxygen atom bonded to the same time to two carbon atoms. This bond, as seen in the image below, has a triangular geometry, quite characteristic for all epoxies. Epoxides originate from alkenes that undergo double bond breaking to form the epoxide functional group.
The Fehling reaction or Fehling test is a method that allows to detect and, to some extent, quantify the reducing sugars in a sample. Its chemical properties are very similar to those of the Benedict reaction, differing only in the copper complex that participates in the oxidation of sugars. The Fehling test is also used
The iron hydroxide (III) is an inorganic compound whose formula is strictly Fe (OH) 3 , in which the proportion of Fe 3+ and OH – is 3: 1. However, the chemistry of iron can be quite convoluted; so this solid is not only composed of the ions mentioned. In fact, Fe (OH) 3 contains
The ammonium ion is a positively charged polyatomic cation whose chemical formula is NH 4 + . The molecule is not flat, but is shaped like a tetrahedron. LThe four hydrogen atoms make up the four corners. Ammonia nitrogen has an unshared pair of electrons capable of accepting a proton (Lewis base), hence the ammonium
The molecular kinetic theory is one that seeks to explain the experimental observations of gases from a microscopic perspective. That is, it tries to associate the nature and behavior of the gaseous particles with the physical characteristics of the gas as a fluid; explain the macroscopic from the microscopic. Gases have always been of interest
The principle of Le Chatelier describes the response of a system in equilibrium to counteract the effects caused by an external agent. It was formulated in 1888 by the French chemist Henry Louis Le Chatelier. It is applied to any chemical reaction that is capable of reaching equilibrium in closed systems. What is a closed
A neutralization reaction is one that occurs between an acidic and a basic species in a quantitative way. In general, in this type of reaction in aqueous medium, water and a salt are produced (ionic species composed of a cation different from H + and an anion different from OH – or O 2- )
The potassium cyanide is an inorganic compound consisting of a potassium ion K + and cyanide ion CN – . Its chemical formula is KCN. It is a white crystalline solid, extremely poisonous. KCN is very soluble in water and when dissolved it hydrolyzes to form hydrocyanic acid or HCN hydrogen cyanide, which is also
