Reagent
Each of the substances that causes a chemical reaction. In chemical analysis, specific reagents are used for each reaction.
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Chemical Glossary Terms
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A B C D E F G H I J K L M N Ñ O P Q R S T U V W X Y Z
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Chemical Terms begining with R
Radiation
Emission and propagation of the energy that is transmitted through space without the need for materi...
Catalyst radiation
Radiation range that is used to produce changes in a substance.
Electromagnetic radiation
Emission and propagation of energy without material support in the form of transverse waves, through...
Gamma radiation
Electromagnetic radiation of high frequency and high energy content. It has a very high penetration ...
Ionizing radiation
Radiation capable of ionizing gases and substances difficult to ionize. It consists of alpha, beta, ...
Ultraviolet radiation
Electromagnetic radiation that has a wavelength smaller than that of the visible. It is found betwee...
Radioactivity
Phenomenon consisting of the disintegration of the nuclei of the substance into simpler particles th...
Radioactive
Term that is applied to an atom whose nucleus is unstable and spontaneously emits a particle to beco...
Radical
Grouping of atom formally derived from an organic compound by loss of one or more hydrogen atoms, is...
Radical free
Chemical species that presents unpaired electrons. For example, NO. These do not meet the octet rule
Radio
Chemical element of symbol Ra, belonging to group 2 of the periodic table, of atomic number 88. It i...
Atomic radio
Half of the distance between two nuclei of the same element joined together. It is considered a peri...
Covalent radio
Distance between the nuclei of atoms that form a molecule through a covalent bond divided by 2. It i...
Ionic radio
Effective radius of the existing ions in the crystalline structures. The ions of the anions are larg...
Radiolitic
Series of products (glucose, formic acid, acetaldehyde, carbon dioxide) formed during some of the pr...
Radon
Chemical element of symbol Rn, belonging to group 18 of the periodic table, of atomic number 86. It ...
Beta rays.
One of the radiations emitted by radioactive materials. They are electrons of high kinetic energy.
Cathode Rays
Beam of particles (electrons) that are formed inside a discharge tube when a high potential is appli...
Gamma rays.
High energy photon emitted by an atomic nucleus in an internal transition between energy levels.
X-rays
Electromagnetic radiation of high frequency and energy. They propagate in a straight line, they are ...
Addition reaction
It occurs in unsaturated organic compounds in which the double and triple bonds are attacked by vari...
Chain reaction.
Self-sustaining chemical reaction in which a chemical reaction causes one or more chemical reactions...
Chemical reaction
Transformation suffered by chemical substances, called reagents, when they give rise to new substanc...
Reaction.
Process by which one or more elements or chemical compounds (reactants) form other new substances (p...
Reagent
Each of the substances that causes a chemical reaction. In chemical analysis, specific reagents are ...
Tollens reagent
Reagent used in the recognition of aldehydes. It is replaced by a mixture of silver nitrate and ammo...
Limit reagent.
Reagent present in the minimum stoichiometric amount. Determine the maximum amount of products forme...
Recrystallization
Purification process of a substance that consists of dissolving it in a suitable solvent to remove t...
Crystal network
Regular ordering in geometrical form of the atoms, molecules or ions of a substance in an internal c...
Reduction
Chemical reaction consisting of the gain of electrons. The substance that produces the reduction of ...
Rule of the octet
Rule that establishes that when forming a bond, the majority of the atoms acquires a stable group of...
Stoichiometric ratio
Ratio in which the reactants of a reaction or proportion in which the products are formed are combin...
performance
Relative amount of a product, obtained in a chemical reaction, compared to the amount that is theore...
Renio
Chemical element of symbol Re, belonging to group 7 of the periodic table, of atomic number 75 and a...
Resins
Generic name of different organic substances of solid or semi-solid presence very viscous, transpare...
Resonance
Representation of a molecule by means of one or more forms, from which an intermediate form is obtai...
Rhodium
Chemical element of Rh symbol, belonging to group 9 of the periodic table, of atomic number 45 and a...
Roentgenium
Chemical element of symbol Rg, belonging to group 11 of the periodic table, of atomic number 111. It...
Rubidium
Chemical element of symbol Rb, belonging to group 1 of the periodic table, atomic number 37 and atom...
Ruthenium
Chemical element of Ru symbol, belonging to group 8 of the periodic table, of atomic number 44 and a...
Rutherfordio
Chemical element of symbol Rf, belonging to group 4 of the periodic table, of atomic number 104. It ...
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