AgBr(s) Any soluble bromide gives a silver bromide precipitate. Iodine (i) solid or (ii) solution A very dark solid (i) Gently heat the dark coloured solid. (ii) Test aqueous solution or solid with starch solution. (i) Gives brilliant purple vapour. (ii) A blue black colour. (i) Iodine forms a distinctive coloured vapour. (ii) Forms a blue-black complex with starch and in biology the test is used to detect starch with iodine solution. Tests for Halide Ions In test (i) the silver nitrate
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it fun‚ exhilarating‚ and decently scary you also have to think about the scientific principles. As these will all be defined by Oxford’s dictionary. One of the most common scientific principles is kinetic energy. Kinetic energy is energy that an object possesses by virtue of being in motion. Kinetic energy increases as motion increases during the roller coaster ride. Potential energy is the energy of a body or a system with respect to the position of the body or the arrangement of particles in the
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Calculating the Enthalpy Change of Reaction for the Displacement Reaction between Zinc and Aqueous Copper Sulphate Data Collection and Processing Observations: * Drops of water left on the inside of the measuring cylinder * Hole in the lid‚ possible escape route for gas or splash-back * The polystyrene cup felt warm during the reaction By extrapolating the graph we can estimate what the rise in temperature would have been if the reaction had taken place instantaneously. I can
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Design lab for the rate of reaction between Mg and H2SO4 Introduction: Increasing the concentration (in moles) of H2SO4 will increase the rate of the reaction when a ribbon of Mg is added to the solution. The rate of the reaction all depends on how strong the concentration of the solution is. Research question: Does altering the concentration of H2SO4 increase the rate of reaction when a ribbon of Mg is mixed with the solution? Variables: Independent Variable: The concentration of
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In this story by Connie Jan Maraan‚ the protagonist of the story is a ghost who died when the Tayuman LRT Station suddenly collapsed and the train came falling down on his face. According to him‚ he has seen Christ because of that incident. -Summary provided by: images.1aot.multiply.multiplycontent.com/…/PHIL.LIT%20-… (first entry that appears in Google upon searching Ghost by Connie Jan Maraan) In Connie Jan Maraan’s story entitled “Ghost”‚ she applied various symbols to express what happened
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STATE OF THE NATION ADDRESS BENIGNO “NOYNOY”AQUINO lll President Benigno s. Aquino lll has just delivered his fourth State of The Nation address (SONA) at the session hall of The House of the Representatives‚ Batasang Pambansa Complex On July 22‚ 2013 Being a candidate and become President is very hard because he need to face and solve all the problems .He need to help people who are needed ‚ he need to response to the few question of people. For him being a president of the country is not
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catalysts that speed up the rate of chemical reactions by lowering the reactants’ activation energy. The goal of this lab was conducted to determine the optimal temperature for bacterial and fungal Amylases and evaluate how temperature affects the catabolic rate of enzymes. Enzyme reaction rate was measured using an Iodine test in which drops of starch solution with either fungal or bacterial Amylase exposed to different temperatures were mixed with Iodine. Iodine is a dark blue color in the presence of
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Aim It is to tell how the reaction between magnesium and hydrochloric acid will be effected if we change the concentration of hydrochloric acid. Introduction In the experiment the magnesium reacts with the hydrochloric acid to create magnesium chloride and hydrogen. The balanced formula for this is: Mg(s) + 2HCL(aq) MgCl2(aq) + H2(g) Magnesium + hydrochloric acid Magnesium Chloride + Hydrogen Magnesium will react with hydrochloric acid‚ because it is higher in the reactivity series than hydrogen
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Metals and Halogens reactions Elements such as fluorine‚ chlorine‚ bromine‚ iodine‚ and astatine belong to Group 7‚ Halogens. At room temperature‚ fluorine is a yellow gas‚ chlorine is a pale green gas‚ bromine is a red liquid‚ and iodine is a purple solid. Astatine is a radioactive element‚ therefore it exists only in small amounts. All the halogens exist in diatomic molecules. They have high ionization energies and are the most electronegative elements. Their electron configuration ns2 np5 make
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amount that an acid ionises depends on its strength (Tinnesand‚ n.d.). A strong acid ionises completely while a weak acid only ionises partially. Furthermore‚ the strength of the acid will also have an effect on the rate of the reaction. A strong acid will have a faster reaction then
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