4/2/14 Period: 1st Chemistry Sour Acids and Bitter Bases Purpose: The purpose of this lab was to observe the different reactions formed between various acids and bases with the aid of indicators. Equipment: 1. Safety goggles. 2. Droppers. 3. Red Litmus paper. 4. Blue Litmus paper. 5. pH paper. 6. Well plate. 7. Micro spatula. Materials: 1. Zinc. 2. Magnesium. 3. Iron. 4. Copper. 5. HCL. 6. HC₂H₃O₂. 7. NaOH. 8. Phenolphthalein. Procedure: Part A: 1. Add five drops
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PURPOSE: To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride (NaCl). There were four test tubes set up for the experiment. Each substance was divided amongst the four test tubes. The first test tube was being observed
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bdram11@yahoo.co.in Abstract Toxic trace metals concentrations in soil exert a decisive impact on soil quality and its use in food production particularly in an industrial area. An attempt is made here to study toxic metals such as Cr‚ Cu‚ Ni‚ Pb‚ Zn‚ including Ba‚ Co and V in representative soil samples from Patancheru industrial area near Hyderabad‚ Andhra Pradesh. It is a known polluted area and is one of the most contaminated regions where about 260 small and large-scale manufacturers
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to be compared in this study are as follows: cysteine‚ Cu (II)‚ silver nanoparticles (AgNPs)‚ and zinc sulfide nanoparticles (ZnS-NPs). The first experiment focused on the reaction between alkaline luminol H2O2‚ the most common luminol solution‚ and cysteine‚ one of the twenty essential amino acids. In this experiment‚ 105 g=mL cysteine solution‚ 2.0 105 mol=L Cu(II) solution‚ and the mixture of 1.0 105 g=mL cysteine with 2.0 105 mol=L Cu(II) were tested. However‚ no
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SPM CHEMISTRY REVISION MODULE FOR THE MASTERY OF THE BASICS IN SPM CHEMISTRY Panel : 1. 2. 3. 4. June Ling S J Chen Soo Chien Felix Ngui Jong Kah Yin SMK St Joseph‚ Kuching Kolej DPAH Abdilah‚ Kuching SMK Tabuan Jaya‚ Kuching SM Sains Kuching REVISION MODULE FOR THE MASTERY OF THE BASICS IN SPM CHEMISTRY Page Compiled and edited by : Jong Kah Yin 1 SPM CHEMISTRY INDEX CONTENT 1 REVISION CHECK-LIST Form 4 Form 5 2 WRITING EQUATIONS 2.1 Charges of ions 2.2 Formulae of compounds
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they are added. Na2SO3 with magnesium bubbles appeared around the magnesium piece and we could predict a reaction. MgSO4 with zinc No reaction observed Zn (NO3)2 with lead and aluminum No reaction observed FeCl3 with lead and aluminum reacts with foil‚ the piece dissolves in the solution and the lead piece seems to be oxidizing. CuSO4 with iron the screw seems to be oxidized quickly; it changes the color of it to a pinkish tone. Questions A. Based on your observations make an activity
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Pt(CO)4 Which of the following equations represent redox reactions? Specify the species being reduced in each case if applicable. (a) (b) (c) (d) NaI(s) + 2K(s) + 2NH3(g) Zn(s) + (e) 2KBr(aq) 3. (b) (f) (j) (n) (r) (v) H2SO4(l) → NaHSO4(s) + HI(g) 2H2O(l) → 2KOH(aq) + H2(g) + 3CuO(s) → 3Cu(s) + N2(g) + 3H2O(l) 2AgNO3(aq) → Zn(NO3)2(aq) + 2Ag(aq) + Cl2(aq) → 2KCl(aq) + Br2(aq) Balance the following redox equations.
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lab: including magnesium‚ methanol‚ and fire. This was to make what we are doing on paper in class a real life circumstance. Analysis questions 1) A) Part A 2Mg+O2 à(delta/heat) 2MgO Part B 2CuCO2 à(delta) 2Cu+CO2+O2 Part C Zn+HCl à H2 Part D CuCl2+2NaOHà 2NaCl+ Cu(OH)2
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EXPERIMENT 2 Stoichiometry Introduction Stoichiometry is the study of the quantitative relationships in chemical reactions. By studying stoichiometry‚ you can calculate the quantity of reactants that will be consumed in a chemical reaction‚ and the amount of product produced. Consider the reaction of vinegar with baking soda. As you may know‚ this reaction produces carbon dioxide gas which bubbles out of the vinegar. But if you want to know how much gas would be produced from combining a teaspoon
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Study material CHEMISTRY CLASS: XII KENDRIYA VIDYALAYA SANGATHAN LUCKNOW R E G I O N 2009-2010 Study Material Class XII -Chemistry SHRI RANGLAL JAMUDA IAS‚COMMISSIONER CHIEF Patron KENDRIYA VIDYALAYA SANGTHAN NEW DEHLI SHRI M.S Chauhan Asst. Commissioner Patron Kendriya Vidyalaya Sangthan Lucknow Region SHRI S.S. Rawat Guidance Smt. A.N Siddiqui (Education officer) (Education officer) SHrI K.‚M. Bhatnagar (Education officer) Co-ordinator SHRI. T. Singh Principal K.V. No. 2
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