Nounions
Anagrams
From Wiktionary under the GNU Free Documentation License. An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. An anion (pronounced /ˈæn.aɪ.ən/ AN-eye-ən), from the Greek word ἀνω (anο), meaning "up", is an ion with more electrons than protons, giving it a net negative charge (since electrons are negatively charged and protons are positively charged). Conversely, a cation (pronounced /ˈkæt.aɪ.ən/ KAT-eye-ən), from the Greek word κατά (kata), meaning "down", is an ion with more protons than electrons, giving it a positive charge. An ion consisting of a single atom is a monatomic ion. If it consists of two or more atoms, it is a polyatomic ion. Polyatomic ions containing oxygen, such as carbonate and sulfate, are called oxyanions. When writing the chemical formula for an ion, its charge is written as a superscript "+" or "−" (depending on if the ion is positive + or negative −) following a number indicating the difference between the number of protons and the number of electrons. The number is omitted if it is equal to 1. For example, the sodium cation is written as Na, the "+" indicating that it has one fewer electron than it has protons. The sulfate anion is written as SO2−4, the "2−" indicating that it has two more electrons than it has protons. If an ion contains unpaired electrons, it is called a radical ion. Just like neutral radicals, radical ions are very reactive. From Wikipedia under the
GNU Free Documentation License How is hydroxide ions produced when ammonia is dissolved in water? Q. *How is hydroxide ions produced when ammonia is dissolved in water? *How come pressure doesnt affect the equilibrium constant whereas temperature does? Asked by Jonny S - Tue Jul 15 06:54:03 2008 - - 2 Answers - 0 Comments A. The water reacts with the ammonia: NH3 + H2O NH4+ + OH- The OH- ions form one of the basic definitons of a base: bases form hydroxide ions on dissolution in water. Answered by Starling - Tue Jul 15 07:00:34 2008 How is it possible to extract metal ions from aqueous samples, and how would the resultant extract b analysed? Q. How is it possible to extract metal ions from aqueous samples, and how would the resultant extract be analyzed? Asked by John - Mon May 3 07:12:37 2010 - - 1 Answers - 0 Comments A. You have to see which metals you expect in the sample then you select specific and selective ions to precipitate them or to turn them to colorful complexes... Once you get color, you analyze the sample with a spectrophotometer... if you get a precipitate.. you get the weight of it... But it depends on what you have in sample... And of course... you will always prepare standards for comparison before you go for your real sample... Example: You get a MetalSulfate that is not soluble.. you precipitate it and weight and make the stechiometric calculations... You you get a MetalSaltComplex to b fluorescent for example.. you prepare a know concentration solution and build a calibration curve with Beers Law... Answered by Luiz Castel - Wed May 5 11:18:25 2010 What is the relation between the rate of reaction and the concentration of some ions?
Q. In an iodine clock reaction, we measure the time taken for a colorless solution to turn blue-black, due to the iodine reacting with starch. We vary the concentration of hydrogen peroxide and iodide ions used in the experiment. What is the relation between the rate of reaction and the concentration of hydrogen peroxide and of iodide ions, provided the concentration of the other reactants (sodium thiosulphate and sulphuric acid) and external factors (temperature) remain constant? Asked by HarpoonDragoon - Thu Oct 11 18:33:17 2007 - - 1 Answers - 0 Comments A. Interesting , this appears to be a 2 step reaction during which iodine is released and reacted with until the second step has gone to competion and the second step can no longer occur as the chemical species involved is totally reacted with forming and intermediate compound and no longer occurs. then the iodine can react with the starch to cause a color change. see the reference below! Answered by 2hard4me - Thu Oct 11 19:01:50 2007 From Yahoo Answer Search: "ions"  news.google.com MiamiHerald.com Dr. Deepak Srivastava, CTO, will outline how NanoeXa's proprietary Quantum Simulation Software (QSS) can advance the development of Li- ion batteries at the ... and more » news.google.com MarketWatch (press release) ... (mill- (%) ions ) ions ) ions ) ions ) ions ) ions ) ions ) ions ) ions ) --- Ban- ana ... Logan Copper's Dansey Project operations update Trading Markets (press release) all 5 news articles » news.google.com Laboratory Talk Quadrupole mean energy scanning is featured for systems configured for analysis of externally generated ions , enabling ion energy distribution measurement ... From Google News Search: "ions"  quantummetrology.de 800px x 600px | 51.90kB [source page] 24 03 09 First Magnesium ions at PTB only 2 weeks after the move from Innsbruck  hea-www.harvard.edu 842px x 596px | 556.50kB [source page] free parameters elemental abundance gas density distribution stellar input spectrum stellar temperature and stellar photon luminosity One of the most important results concerns the ionization structures for H He and O as well as those for N and S Corresponding line ratios can be found here In order to model the ionization structure and the observed line From Yahoo Image Search: "ions"  sciencestage.com sciencestaff Wed, 28 Jul 2010 04:00:00 GM Raising prospects for building a practical quantum computer, physicists have demonstrated sustained, reliable information processing operations on electrically charged atoms (. ions. ). The new work overcomes significant hurdles in scaling ...  physicsworld.com unknown Wed, 14 Apr 2010 17:00:00 GM Number sequences guaranteed random by quantum mechanics.  jjap.ipap.jp Takeshi Yajima, Kohei Fujiwara, Aiko Nakao, Tomohiro Kobayashi, Toshiyuki Tanaka, Kei Sunouchi, Yoshiaki Suzuki, Mai Takeda, Kentaro Kojima, Yoshinobu Nakamura, Kouji Taniguchi, Hidenori Takagi Mon, 07 Jun 2010 01:00:00 GM The change in the spatial distribution of oxygen . ions. after an initial voltage application called the forming process was investigated for oxide resistance switching devices by secondary . ion. mass spectrometry mapping. ... From Google Blog Search: "ions" |
