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    APBIOLQG

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    many as the stars in a galaxy‚ about one hundred thousand million. The various cells – e.g. muscle cells‚ kidney cells and nerve cells – act together in an intricate system in each one of us. Through pioneering discoveries concerning the water and ion channels of cells‚ this year’s Nobel Laureates Peter Agre and Roderick MacKinnon‚ have contributed to fundamental chemical knowledge on how cells function. They have opened our eyes to a fantastic family of molecular machines: channels‚ gates and

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    Anionic Exchange Ion Chromatography to Detect the Anions Concentrations in the water Samples Narendra Boppana‚ Nasser Ali‚ Martin Chavez‚ Sear Introduction: Ion Exchange Chromatography is a process where the ionic exchange occurs in between the stationary phase and the sample in the mobile phase‚ by using this ionic exchange phenomenon it is easy to separate the compounds. Ionic exchange depends on the electrical properties

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    balance lab

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    a precipitate will form because one of the two resultant compounds is not soluble in water. This is a hint that a reaction took place. Cations are positively charged ions that are attracted to the cathode in electrolysis. Anions are negatively charged ions that are attracted to the anode in electrolysis. These two are opposite ions that attract to one another. In this lab research‚ I learned that the following reaction will happen: lead nitrate + potassium chromate à potassium nitrate + lead chromate

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    Ionic Compounds

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    understand how this process works‚ we must grasp an understanding of what an ion is and what an ionic bond is. An ion is an atom that has an electric charge and is created when an atom (or a group) gain or loses electrons. (It has an electric charge due to the imbalance and since they need to neutralise each other.) An ionic bond is a bond that transfers from one and another‚ resulting in an attraction between oppositely charged ions. Sodium chloride (NaCl) is a compound of a metal (Sodium) and a non-metal

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    Cation Anion List

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    Monoatomic Ions Name Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem magnesium ion Se2¯ selenide for bromide is calcium ion Te2¯ telluride brom-. strontium ion barium ion Ag + silver ion N 3¯ nitride radium ion Ni2+ nickel

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    Small Molecules

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    Outline the difference between an atom and an ion. An atom has the same amount of protons as electrons‚ so it is neutral in charge. It is a single particle of a chemical event. When an atom gains or loses an electron it becomes an ion. Ions are charged‚ while atoms are uncharged. An ion has either a positive or negative charge because there are unequal numbers of electrons and protons. A positive ion is called a cation‚ while a negative ion is called an anion. 3. Define electronegativity

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    outer electrons in the Period 3 element are being involved in the bonding - from just the one with sodium‚ to all seven of chlorine’s outer electrons. The structures The trend in structure is from the metallic oxides containing giant structures of ions on the left of the period via a giant covalent oxide (silicon dioxide) in the middle to molecular oxides on the right. Melting and boiling points The giant structures (the metal oxides and silicon dioxide) will have high melting and boiling points

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    Potassium Iodide Lab

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    We learning about how ions dissolve in water and also how dissolved ions of different compounds react with each other and finally examine the final product for the presence for ions. Materials- Sheet of Paper Lead (II) Nitrate Potassium Iodide Deionized Water Filter Paper Charcoal Matches Equipment- Clean dry spatula Small Beakers Glass stirring rod Ring stand Funnel Tweezers Bunsen Burner Small Test Tubes Safety- During this lab we are dealing with some dangerous chemical including Lead Nitrate

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    Chemistry Project

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    2010 - 2011 An investigatory project on Chemistry PROJECT: TO STUDY THE PRESENCE OF OXALATE ION CONTENT IN GUAVA FRUIT AT DIFFERENT STAGES OF RIPENING. Submitted by: ANUKRITI SHARMA Class- XII – A (sci.) Roll no: 06 Air force school Chakeri ‚ Kanpur(up) CERTIFICATE This is to certify that ANUKRITI SHARMA has satisfactorily completed the project in CHEMISTRY on ‘OXALATE ION´ prescribed by the AISSCE course in this school in the year 2010-2011. I have examined the project and

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    3.htm In the experiment part (i) (a)‚ the solid copper(II) nitrate is used to dissolve in a test tube filled with half distilled water. The solid copper(II) nitrate ionize in water to form copper(II) ions and nitrate ion. Hence‚ a blue solution is formed due to the blue copper(II) ion present in the solution. When excess solid is added‚ the solution will become saturated and do not allow any solid to dissolve‚ so excess solid will remain in the solution. This is shows that the equilibrium

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