Chemistry

Latest articles in Chemistry

Definition of fuel cells

Fuel cells are electrochemically based devices that generate electricity through a chemical reaction, usually between hydrogen and oxygen, without combustion. In a fuel cell, hydrogen is oxidized at the anode and oxygen is reduced at the cathode, producing water, heat, and electricity as byproducts. This process involves the production of hydrogen and oxygen.

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Definition of chemical synthesis

Chemical synthesis is an essential procedure for the production of nanoparticles and certain drugs, for example. It is a resource or method that, thanks to the development of chemical compounds based on elementary or simpler substances, allows us to obtain chemical substances that do not exist in nature. To understand what chemical synthesis consists of, we must first […]

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Definition of isothermal process

An isothermal process is the name given to the reversible transformation that occurs in a thermodynamic system that has a constant temperature throughout said change. It is easy to identify it compared to other types of processes when it is clear and present that in the dictionary of the Royal Spanish Academy (RAE) […]

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Definition of Gay-Lussac's law

Gay-Lussac’s law is a valid statement suitable for ideal gases, while both temperature and pressure are required to be moderate and there is a low gas density to be fulfilled with great precision when it comes to real gases. This postulate, which bears the name of a prominent physicist and chemist from […]

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Definition of reaction rate

Reaction rate is a measure of how quickly chemical reactions proceed. It is defined as the change in the concentration of reactants or reaction products per unit time. It can be expressed in terms of the decrease in the concentration of a reactant or the increase in the concentration of a product.

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Definition of crystallography

Crystallography is the name of a fascinating and very useful science in practice that focuses on the study of the properties and particularities of crystalline substances. Thanks to it, the external geometry, chemical composition and internal structure of crystals are determined. In this field of knowledge, the study of crystallography is carried out […]

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Definition of internal energy

Internal energy is a concept used in the field of Physics that allows us to identify, within a system and from the random and disordered movement of molecules, a reflection (considered on a macroscopic scale) of energy. The theory conceives it as the sum of both internal kinetic energy and the […]

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Definition of Le Châtelier's principle

Le Châtelier’s principle, formulated by French chemist Henry-Louis Le Châtelier, states that if a system in equilibrium is disturbed by a change in concentration, temperature, or pressure, it will react by adjusting its conditions to counteract the disturbance and restore equilibrium. A fundamental concept in this framework is the constant of […]

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Definition of heavy metals

Heavy metals is the name given to certain high-density chemical elements that have metallic characteristics and are toxic to living beings, as well as causing serious environmental problems. It should be noted that, over time, the definition of heavy metal has been responding to the […]

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Definition of Bohr's atomic model

The Bohr atomic model is a presentation focused on atoms made in 1913 by a prominent Danish physicist named Niels Bohr. This contribution was motivated by the intention of using Rutherford’s atomic model as a starting point to give an explanation of how matter achieves stability. Bohr […]

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