electrons can be transferred from one atom to another thus creating an ion. An ion is an atom that has lost or gained an electron. Ions form because neutral atoms become charged by the losing or gaining an electron. An anion is created when one atom gains electrons. On the contrary‚ a cation is created when an atom loses electrons. The octet rule is a simple chemical rule that states that atoms tend to attract each other in such a way so that they each have eight electrons in their valence shells. The
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centrifuging a controlled sample of one of the ions or anions combined with one of the reagents such as NaCl. It was found that it could be separated out after centrifuging and would result in a sample without the ions or anions if it precipitated. With the data from week one a method of adding the reagents in a certain order would result in the ability to separate all ions or anions out of a solution. Overall‚ knowing how the cations or anions reacted with certain reagents benefited greatly to determine
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sodium‚ potassium‚ calcium‚ magnesium‚ copper‚ iron‚ nickel and silver and some anions like chloride‚ sulfate‚ nitrate‚ oxalate‚ phosphate‚ and hydroxide. We will be seeing which one forms a precipitate or rings. Most likely the anions will be the insoluble. From there we will be making a flow chart that will go accordingly to our experiment. Materials Test tubes or containers to mix compounds‚ Anions reagents‚ Cation reagents Safety Wear goggles ‚ Follow instructors rules at all times‚ Don’t
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rules are located on page 67 to 68 in lab manual and explain when a precipitate will occur. Unknown mixtures of compounds are hard to separate and individually identify‚ thus the flowchart is used. A flowchart is an outline that separates cations from anions where they can then be tested through spot testing. A real world example of qualitative analysis could be used in athletics. Many coaches will say‚ “Quality over quantity‚” when referring to drills. Coaches are looking for concentration and
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Experiment 14 Topic Purpose Procedure : Qualitative analysis : To determine the cations and anions of inorganic substances : (a) Solids KA1 and KA2 are simple salts. Carry out the following experiments with solid KA1 to identify its cation and anion. (b) You are then required to carry out a few experiments to identify the cation and anion present in solid KA2. In all the experiments‚ the reagent should be added gradually until no further change is observed. Deduce what you can about KA1 and KA2.
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electrons (ions)/ exists as (discrete) molecules in liquid state‚ therefore is not an electrical conductor 1 1993 - 4(a) Marking Scheme (i) Group II/ 2 Because W has 2 electrons in its outer/ outermost shell/ W is magnesium (Mg) 1 1 (ii) (1) X is the cation/ an ion of W/ W and X are atom and ion of the same element 1 (2) Oxidation of W‚ e.g.‚ reacting W with dil. acid/ reacting W steam/ burning of W in air/ reacting W with chlorine 1 (iii) (1) 1 (2) Yes‚ because Y and Z have the same electron
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3 negatively charged ions. Negative ions are called anions and positive ions are called cations. When testing for cations/metals you could use a flame test this is the simplest and quickest way of test for cations another way that you could test for cations is a sodium hydroxide test this test consist of adding sodium hydroxide to test compound when coloured precipitate is formed them stop adding the sodium hydroxide and see what the cation is by using the table below‚ this table show what colour
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new ways for chemical reactions in homogenous as well as biphasic catalysis including biocatalysts [28‚29]. 8. Physical‚ chemical and biological properties of ionic liquids can be tuned by (a) switching anions or cations; (b) by designing specific functionalities into the cations and/or anions; and (c) by mixing two or more simple ionic liquids or ionic liquids with organic solvents. Due to unique properties of ILs‚ researches on these liquids have the potential to impact on the daily lives of
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Ashley Huston ILab‚ Week #2 CATIONS AND ANION LAB Introduction The purpose of this lab is to demonstrate a double-replacement reaction of ionic compounds. In this experiment‚ you will combine two ionic compounds. Both compounds are soluble in water. If a response happens between these two compounds‚ then 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
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Valuable Experience Gained During the Training Period The valuable experience that I gained during the training is when we are in the furnace of the boiler where the combustion takes place. The furnace is a internal parts of the boiler so we are taking the advantage to see what’s inside the boiler. We saw the generating tubes‚ bunker fuel injector‚ grates that we need to fix because of mis-alignment of the grates base. Grate is use for de ashing to avoid clogging up of the boiler. The second
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