Filter
Porous device that allows to separate solids from liquids. The solid substance is deposited in the filter, since large solid particles do not pass through the pores. The simplest filter used in laboratories consists of a porous paper disc that is folded in half twice in a row, folded into a cone shape and the funnel adapted. In chemical analysis, special devices are used, such as porous screens and Gooch crucibles.
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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 F
Phase
A homogeneous part of a system physically differs in composition and properties to the other parts o...
Feldspar
Minerals of the silicates group. They are made up of silicon and oxygen plus other components. Alumi...
Femic or ferromagnesian
They are silicate minerals of iron and magnesium such as biotite, amphiboles and pyroxenes.
Phenol
Alcoholic derivative of benzene, is a colorless solid that melts at 41ºC. It has a characteristic s...
Fermentation
Sequence of biochemical reactions of transformation of an organic substrate produced by the enzymes ...
Fermio
Chemical element is symbol Fm, belonging to the series of actinides, of atomic number 100. It is a r...
Ferromagnetism
Property of some substances or materials in which, under the action of a sterno magnetic field, a ma...
Fertilizers
Organic or mineral substance that contains one or several chemical elements essential for the growth...
Filtration
Method of separation of a pure liquid or solution containing an insoluble solid substance by a porou...
Filter
Porous device that allows to separate solids from liquids. The solid substance is deposited in the f...
Nuclear fision.
Process of dividing an atomic nucleus of a heavy chemical element, such as uranium 235, into two mai...
Flocculation
Sedimentation in the form of flakes in a colloidal dispersion by adding an electrolyte to a lyophobi...
Fluid
Material substance whose particles have a high mobility, moving freely due to the lack of cohesion b...
Fluorine
Chemical element is symbol F, belonging to group 17 of the periodic table, of atomic number 9 and at...
Fluorescence.
Emission of light by some substances due to the excitation of their electrons. If the emission of li...
Fluorides
Binary combinations of fluorine on another element. Due to the electronegativity of fluorine, a larg...
Formaldehyde
The simplest and most important of the series, called methanal. It is a colorless gas that dissolves...
Formula
Representation of the composition of a substance by the symbols of the constituent elements and the ...
Empirical formula
Formula that informs about the constituent elements and the proportion in which they are found, but ...
Structural or developed formula
Formula that represents the arrangement in the space of the bonds between the atoms that form the ba...
Molecular formula
Real formula of the compound constituent molecule that reports the number of real atoms of each cons...
Phosphates
Salts that come from phosphoric acid, eg, ammonium phosphate, (NH4) 3PO4
Phosphorescence
Emission of light by certain materials when they are excited, this remains some time after the excit...
Match
Chemical element is symbol P, belonging to group 15 of the periodic table, of atomic number 15 and a...
Photon
How much energy of electromagnetic radiation. There are as many kinds of photons as there are freque...
Photosynthesis
Metabolic process that requires the use of sunlight energy by cyanophyceous cells, some bacteria and...
Molar fraction
Way of expressing the concentration of a mixture or dissolution that indicates existing between the ...
Francio
Chemical element is symbol Fr, belonging to group 1 of the periodic table, of atomic number 87. It i...
Fructose
Monosaccharide of six carbons with ketone function, is found in fruit and honey, and also in some ol...
Ionic force.
Property of a solution that depends on the total concentration of ions in the solution, as well as t...
Van der Waals forces
Force of electrostatic type that appear in the interactions between covalent molecules, especially w...
Dipole-dipole forces.
Forces caused by the attraction between molecular dipoles. For example, the HF has a positive and a ...
Intermolecular forces
Attractive and repulsive force between the nuclei of the atoms and the electrons that surround them....
Fusion
Change of state from solid to liquid that occurs at a certain temperature and pressure and is differ...
Nuclear fusion
Nuclear reaction that occurs when two simple nuclei are combined and another more complex is obtaine...
Temas de química mas buscados
Pinzas de laboratorio
Son un tipo de sujeción ajustable, generalmente de metal, que forma parte del equipamento de laboratorio, mediante la ...
¿Que es la Química? Química General
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