noun
definition
An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.
Examples of ion in a Sentence
Since some ions are more mobile than others, a separation will ensue when water is placed in contact with a solution, the faster moving ion penetrating quicker into the water under the driving force of the osmotic pressure gradient.
If an element be present in a compound otherwise than as an ion, it is not interchangeable, and cannot be recognized by the usual tests.
On the lines of Poynting's theory of solution, each ion in electrolytes must combine with one or more molecules of solvent.
All copper salts in dilute solution are blue, which is therefore the colour of the copper ion.
It is apparent that metallic salts of organic acids would, in aqueous solution, be ionized, the positive ion being the metal, and the negative ion the acid residue.
Taking the chemical equivalent weight of silver, as determined by chemical experiments, to be 107.92, the result described gives as the electrochemical equivalent of an ion of unit chemical equivalent the value 1 036 X 5.
The ions will therefore diffuse independently, and the faster ion will travel quicker into pure water in contact with a solution.
The ions carry their charges with them, and, as a matter of fact, it is found that water in contact with a solution takes with respect to it a positive or negative potential, according as the positive or negative ion travels the faster.
In February 1866 he was compelled to abdicate; and a council of regency was formed under the presidency of Prince Ion Ghica.
The second is the Hrongraf of Dorotheus of Monembasia, translated by a certain Ion Buburezau.
In Walachia .a certain Ion Budai Deleanu, a man of great learning, author of a hitherto unpublished Rumanian dictionary of great value, wrote a satirical epos in which gipsies play the chief part.
The collected tales of the Moldavian Ion Creanga (1837-89) appeared in his Opere complecte (1908).
But B i ion before the end was reached all had been persuaded or XpUS forced into Christianity, had ceased to be Mudjares, Moriscoes.
Characterisation of a novel methanol dehydrogenase containing a Ba 2+ ion at the active site.
The same authors produce evidence to suggest that cells are capable of using electric fields in ion pumping.
During the later period of the Thirty Years' War Bohemia was frequently pillaged by Swedish troops, ion m and the taking of part of Prague by the Swedish general.
The total number of all farms in the state in 1900 was 19,387; and the number of white farmers, 19,144The greatest number of farms were between Ion acres and 500 acres-1916 in 1880, and 5565 in 1900.
We have attempted to address these issues by investigating the adsorption of a single Cu ion in different charge states.
See also biological filtration and ion exchange for methods to remove ammonia from the water.
Removal by reacting with ammonia The most likely basic substance which a hydrogen ion is going to collide with is an ammonia molecule.
The use of a secondary azide was successful, although the stereoselectivity of the reduction of the resultant iminium ion was low.
Electron transparent cross-sections through the deformed region were prepared using a focused ion beam.
We are currently developing an ion mobility spectrometer for the detection and quantification of trace compounds in exhaled breath in real time.
Both experimental work and ab-initio calculations agree that the most stable form is the ammonium ion pair species.
A variety of dosimetry techniques are available, including graphite calorimetry, diode and ion chamber dosimetry.
For example, they hope to observe the structural changes accompanying the activation of ion channels in living cells.
Return to DIAGRAM Disposal of iron residues The waste product from the ion exchange was ferric chloride.
The ammonium ion together with the chloride ion formed in the previous stage makes up the ammonium chloride ion formed in the previous stage makes up the ammonium chloride produced in the reaction.
From the ' total ion chromatogram ', we could see variations in the total ion signal.
All samples, with the exception of the diffusion tubes, were analyzed using ion chromatography.
The phosphorus in solution reacts with the molybdate ion to produce a blue coloration whose intensity is directly proportional to the concentration of phosphorus.
David Williams, Dept. of Chemistry UCL ), ion conductance imaging 107 (Prof.
In order for the channel to respond to the appropriate ligand they have specific regulatory domains attached to the ion conduction pathway.
The cyanide ion comes from hydrogen cyanide ion comes from hydrogen cyanide, which is a covalent molecule.
The cyanide ion comes from hydrogen cyanide, which is a covalent molecule.
See electron cyclotron resonant heating, ion cyclotron resonant heating, lower hybrid heating.
This in turn involves bond dissociation, gain of an electron by the halogen, and hydration of the halide ion.
Atomic level defects, such as atoms of differing mass, vacancies etc. can be introduced by adding dopants or by ion bombardment.
We are also studying the ion channels that regulate calcium movements across the cell membrane using patch clamp electrophysiology.
Material etching can be carried out by Ion Beam Milling, reactive ion etching and wet chemical etching.
The readout gaps are milled obliquely into silicon beams used focused ion beam etching.
Ion fluxes related to growth of plantation forestry are considered.
Cardiac structural biology Research focuses upon studies of ion channels regulating calcium homeostasis in the heart.
The contribution of altered ion homeostasis to development of osteoarthritis is also being examined.
An ammonia molecule removes a hydrogen ion from the -NH 3 + group in a reversible reaction.
Group may be used for this job, and the first step is to prepare a PDB file for the hydrated ion.
There must have been some slight reaction with the water to produce hydroxide ion with the water to produce hydroxide ions in solution.
An ammonium ion is formed, together with an amine.
The table shows the angles between protein ligands centered on the metal ion.
This combines MBE growth, focused ion beam lithography, and hydrogen radical cleaning within one complete ultra high vacuum system.