The polylactic acid, whose correct name is poly (lactic acid), is a material formed by polymerizing lactic acid. It is also known as poly-lactide, as it can be obtained from the breakdown and polymerization of lactide, which is a dimer of lactic acid. Poly (lactic acid) or PLA is not an acid, it is a
The ice floats in the water because of its density. Ice is the solid state of water. This state has well-defined structure, shape and volumes. Normally the density of a solid is greater than that of a liquid, but the opposite is the case for water. At normal pressure conditions (one atmosphere ), ice begins
The zinc nitrate is an inorganic compound consisting of the elements zinc (Zn), nitrogen (N) and oxygen (O). The oxidation state of zinc is +2, that of nitrogen is +5, and that of oxygen is -2. Its chemical formula is Zn (NO 3 ) 2 . It is a colorless crystalline solid that tends to
The methods of separating mixtures are procedures that allow obtaining one or more components of a mixture without modifying its chemical properties. Therefore, they are said to be based on purely physical techniques, unrelated to chemical reactions or the use of corrosive substances. These methods are part of our day to day, whether in open
The chemical reactions we can find in everyday life in general. This is the answer that a chemist could give you without error to exaggerate. For example, when a match burns, a combustion reaction occurs. And it is that someone eager in this matter will try to see things from the molecular or atomic point
The calcium hypochlorite is an inorganic compound of formula Ca (ClO) 2. It is a salt marketed as granules or tablets. It decomposes easily in water releasing oxygen and chlorine. It has a strong smell of chlorine and sIt is mainly used as a bleaching or disinfecting agent. Its structure is presented in figure 1. The
The acaroína , also known as “fluid Manchester”, “zotal” and “creosote”, is a bactericidal disinfectant and natural derived from distillation of wood. Its main component is phenol, which is caused by the oxidation of benzene. Due to the fact that it is a powerful compound, it is mainly used in the cleaning of industries, factories,
The intensive properties is a set of properties of substances that do not depend on the size or amount of the substance considered. On the contrary, the extensive properties are related to the size or quantity of the substance considered. Variables such as length, volume, and mass are examples of fundamental quantities, which are typical
The calcium oxalate is an organic compound consisting of the elements carbon (C), oxygen (O) and calcium (Ca). Its chemical formula is CaC 2 O 4 . It is generally found in its three hydrated forms: mono-, di- and trihydrate. That is, with one, two or three water molecules respectively in its crystalline structure. Calcium
The formal charge (CF) is that which is assigned to an atom of a molecule or ion, which allows explaining its structures and chemical properties based on it. This concept implies the consideration of the maximum character of covalence in the bond AB; that is, the pair of electrons is shared equally between A and
