exposed to air properly. Q.2. Write the balanced equation for the following chemical reactions: (i) Hydrogen + Chlorine → Hydrogen chloride Ans. H2 (g) + Cl2 (g) → 2HCl (g) (ii) Sodium + Water --> Sodium hydroxide + Hydrogen Ans: 2Na (s) + 2H2O (liq) → 2NaOH (aq) + H2 (g). Q.3. Write a balanced chemical equation with state
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What is collagen? Collagen is a simple protein made up of amino-acids. Amino acids are built from carbon‚ oxygen and hydrogen. In fact collagen makes up approximately 30% of the protein within the body. As a structure Collagen is intensely strong and is a vital protein that is found all over the body: In tendons and ligaments. It plays an important role in the protection function of the skin in that it helps limit the absorption and spreading of pathogenic substances‚ environmental toxins‚ micro
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Salts – Reactions with Acids: Learn these General Equations and their Examples: 1. ACID + METAL –––––––> SALT + HYDROGEN Hydrochloric acid + Magnesium Magnesium Chloride + Hydrogen 2HCl(aq) + 2Mg(s) 2MgCl(aq) + H2(g) Sulphuric acid + Zinc Zinc Sulphate + Hydrogen H2SO4(aq) + Zn(s) ZnSO4(aq) + H2(g) Nitric acid + Aluminium Aluminium Nitrate + Hydrogen 2HNO3(aq) + 2Al(s) 2AlNO3(aq) + H2(g) 2. ACID + BASE –––––––> SALT + WATER Hydrochloric acid + Copper
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color changes when sodium bromide solution is reacted with chlorine water and iodine solution (separately). 8. Observe what happens when 3M sulfuric acid and potassium permanganate are added to hydrogen peroxide antiseptic. Observe what happens when potassium permanganate is added to hydrogen peroxide
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ACTIVITY SERIES The activity series of metals is an list of metals ranked in order of decreasing reactivity to displace hydrogen gas from water and acid solutions. It can also be used to predict which metals will displace other metals in aqueous solutions. In introductory chemistry‚ the reactivity series or activity series is an empirical series of metals‚ in order of "reactivity" from highest to lowest. It is used to summarize information about the reactions of metals with acids and water‚ single
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it shares hydrogen atoms. it gains or loses neutrons. 0 out of 5 The correct answer is: it gains or loses electrons. Question 7 of 20 The symbol 3CO2 represents one atom of oxygen and three atoms of carbon. three atoms of carbon and one molecule of oxygen. three molecules of carbon dioxide. one atom of carbon and three atoms of oxygen. 0 out of 5 The correct answer is: three molecules of carbon dioxide. Question 8 of 20 In water‚ hydrogen bonding occurs between the hydrogen and an oxygen
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NMR Project Sample 35 and 40 Chemical Engineering Chemical Analysis Aim The two samples are 35 and 40. Analytical techniques are vital in everyday science and so NMR procedure is an absolute essential to deduce compounds and chemical structures; this assignment requires the identification of two samples using an NMR software program. Background NMR spectroscopy is a well established method for structure determination of various organic molecules ranging from small molecules all the
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hydrophilic nature of paper? i. Hydrogen bonding would occur between the hydroxyl groups of glucose and the water molecules. Since hydrogen bonding is the strongest intermolecular force‚ the hydrogen bonds between the glucose in cellulose and water would make paper very hydrophilic. b. Explain the types of intermolecular interactions that would occur between the FD&C Red No.40‚ Blue No.1 and Yellow No. 5 food dyes and the paper. i. Red No. 40 and Yellow No. 5 would form hydrogen bonds with the paper. Blue
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that has the chemical characteristics of that element. -An element or an atom of that element often is represented by a symbol. -Usually the first letter or letters of the element’s name is/are used. For example‚ C for Carbon‚ O for Oxygen‚ H for Hydrogen‚ Ca for Calcium‚ Cl for Chlorine‚ K for Potassium and Fe for Iron. -The symbol is taken from English and Latin names. Atomic Structure: The characteristics of living and nonliving matter results from the Structure‚ Organization and behavior of
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which each forms. Ch 3.3 “Ion Formation” “Covalent Bonding” “Polarity in Water Molecules and Hydrogen Bonding” How Atoms Bond; Examples of Hydrogen Bonds http://www.youtube.com/watch?v=QqjcCvzWwww&list=PL3FE5B87E56E7A849&index=3 10 Describe the atomic components and their bonding in water molecules as an example of a compound having polar covalent bonds. Ch 3.3 “Polarity in Water Molecules and Hydrogen Bonding”
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