Research The Chemical name for Baking Soda: Baking soda is sodium bicarbonate. The molecular formula of sodium bicarbonate is NaHCO3. What Baking Powder contains: Baking powder is a raising agent that is commonly used in cake-making. It is made from an alkali- bicarbonate of soda‚ and an acid- cream of tartar‚ plus a filler like corn flour or rice flour which absorbs moisture. Baking powder is a mixture of leavening agents (baking soda‚ acid salts) and inert ingredients (cornstarch‚ calcium carbonate)
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Decomposition Reaction-Electrolysis of Water Introduction: Demonstrate the decomposition of water in simple but very colorful and dramatic fashion on an overhead projector. Concepts: • Decomposition reaction • Oxidation–reduction • Electrolysis • pH Materials: Sodium Chloride/universal indicator solution‚ NaCl‚ 25 mL Overhead projector Pencil lead‚ 0.7 mm Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt
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Chemistry 101 12-STANDARDIZATION OF SODIUM HYDROXIDE Standard solutions for titrations are especially pure mixtures with exactly known concentrations. Primary standards are very pure solids. They have the advantage that they can be weighed (the analytical balance is normally the most accurate instrument in the laboratory) and they are stable under laboratory conditions. In this experiment‚ the primary standard is oxalic acid dihydrate‚ H2C2O4 ( 2H2O. It will be used to standardize a
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LAB 6. ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the pH of common acids and bases using a pH meter‚ pH paper‚ and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution. SAFETY CONCERNS: Always wear safety goggles. Wash with soap and water if skin contacts acids or bases. ACIDS: An Acid is a substance that when dissolved in water will produce hydrogen ions‚ H+‚ in the solution. An acid that does not contain carbon is called an inorganic
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Chemistry * a science that dealing with the structure‚ composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal combustion
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Decolourisation of KMnO4 occurs immediately CH2 = CH2 + [O] + H2O → CH2 – CH2 ⏐ ⏐ OH OH (a) Insert a glowing splint into the hydrocarbon hydrocarbons: Burns with smoky flame Aromatic hydrocarbons (b) Add concentrated nitric(v) acid and concentrated sulphuric acid at 55 °C: Yellow oil with bitter almond smell produced benzene NO2 + HNO3 (HONO2) Alkylbenzenes – CH3 CH3 + H2O Add alkaline KMnO4 and boil: Decolourisation of KMnO4; brown precipitate of MnO2 formed ⎯ CH3
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------------------------------------------------- Maggi ketam Origins The original company came into existence in 1872 in Switzerland‚ when Julius Maggi took over his father’s mill. He quickly became a pioneer of industrial food production‚ aiming to improve the nutritional intake of worker families. Maggi was the first to bring protein-rich legume meal to the market‚ and followed up with a ready-made soup based on legume meal in 1886. In 1897‚ Julius Maggi founded the company Maggi GmbH in the
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Explore the ways that Tennyson and Hughes present the emotions of the soldiers in the poems ‘The Charge of the Light Brigade’ and ‘Bayonet Charge’. In this essay‚ I’m going to talk about how Tennyson present emotion and feeling in his poem towards the patriotic soldiers that suffered in war due to the blunder the generals had made. Also on the ‘Bayonet Charge’ Hughes writes his poem to show how brave and patriotic the soldiers were to go into the war for their beloved country. Tennyson suggest
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P3 – Produce a chart showing how two businesses are organised (Thorpe Park and your charity). Marketing Executives PR Manager Marketing Analysts Brand Manager Marketing Manager Human Resources General Manager Thorpe Park Staffs and employees Director/ Manager Finance and information system and divisions International Chief Executives Trading The campaign policy Staffs and voluntaries Oxfam Corporate human resources The fund raiser and supporter
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OF CONCENTRATION ON REACTION RATE INTRODUCTION • Concentration is one factor which has an effect o the rate of a chemical reaction. In chemistry we describe concentration in terms of the number of moles of a substance there are in every cubic decimetre (litre) of solution‚ written as moles.dm-3 of M for short. • In this experiment you will find out how increasing the concentration of the acid solution changes the rate of the reaction between dilute hydrochloric acid and magnesium metal
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