Sc Science test KEY STAGE 3 TIER 5–7 Paper 1 First name ________________________________________________ Last name ________________________________________________ School ________________________________________________ 2009 Remember I The test is 1 hour long. I You will need: pen‚ pencil‚ rubber‚ ruler‚ protractor and calculator. I The test starts with easier questions. I Try to answer all of the questions. I The number of marks available
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SERANGOON JUNIOR COLLEGE General Certificate of Education Advanced Level Higher 2 CHEMISTRY JC2 Preliminary Examination Paper 1 Multiple Choice Additional Materials: Data Booklet Optical Mark Sheet (OMS) 9647/01 23 August 2011 1 hour READ THESE INSTRUCTIONS FIRST On the separate multiple choice OMS given‚ write your name‚ FIN/NRIC and class in the spaces provided. Shade correctly your class and FIN/NRIC number. Eg. If your NRIC is S9306660Z‚ shade S9306660Z for the item “index number”. There
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Bio 6 (Mon. Lab) 5/6/13 The Effects of Pepsin VS. Trypsin in The Digestion of Protein Introduction As food is mechanically and chemically digested through our oral cavity then passes through our pharynx and down our esophagus‚ our food then enters the stomach. The stomach‚ being the main organ for storage‚ also helps with breaking down our food‚ but in order to accomplish that our pancreas helps by excreting an inactive digestive enzyme called pepsinogen. Pepsinogen is the inactive form
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16-3 Red Cabbage Juice pH Indicator Sources: Prof. George Ewing’s C100 Demonstration Notes; Prof. Carolyn Huffman’s Fall ’93 C100 lecture; B. Z. Shakhashiri‚ 1989‚ Chemical Demonstrations: A Handbook for Teachers of Chemistry‚ vol. 3‚ pp 162-166. Description and Concept: Red cabbage juice will change to a variety of colors when added to solutions of various pH. Red cabbage juice is a pH indicator. Materials: red cabbage* blender hot or boiling water filter paper (coffee filters
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An investigation into the total acid content of assorted brands of lemon and lime soft drink Abstract: The aim of this experiment was to determine the total levels of carbonic acid concentration in 3 differing brands of lemon and lime soft drinks. Research Question: Does the acid content in three different lemon and lime flavoured soft drink brand differ significantly? The purpose of this investigation is to calculate the total acid content within different brands of lemon
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What is Chemical and Process Engineering? The branch of Engineering which is concerned with processes in which materials undergo a required change in composition‚ energy content or physical state at a reasonable cost and in the safest possible manner. History of Chemical Engineering For all intents and purposes the chemical engineering profession began in 1888. While‚ the term "chemical engineer" had been floating around technical circles throughout the 1880’s‚ there was no formal education
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neutralization. HCl(aq) + Fe(s) C5H10 + O2(g) Pb(NO3)2(aq) + FeCl3(aq) HBr(aq) + MgO(s) KI(aq) + Pb(NO3)2(aq) Predict the products for the following chemical reaction. Write balanced molecular‚ complete ionic‚ and net ionic equations. Na2CO3(aq) + HCl(aq) ? Chapter 8 2.00 g of ammonia (NH3) are combined with 5.00 g of molecular oxygen to produce nitrogen monoxide and water vapor. Find the limiting reactant and theoretical yield for this reaction. If 2.50 g of NO are collected‚ what
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Name: Allison Bynum Date:6/17/14 Exp 8: Ionic Reactions Lab Section: 75426 Data Table: Record your observations in the following table Na3PO4 NaI Na2SO4 NaCl NaHCO3 Na2CO3 NaOH Co(NO3)2 Created a musty looking cloud that later turned dye to a purple shade No change‚ brought out pink very slightly No change No change Created a cream looking liquid‚ did not mix with pink substance Darkened color‚ changing to more of a purple tint as time passes on. Immediately turned
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Isolation: * 1 Cup Wheat Flour * Cheese Cloth * Iodine Solution * Water Qualitative Color Reaction Tests: * Isolated Gluten * 2.5 M‚ 3 M‚& 6 M NaOH * 10% & 20% NaOH * Conc. NaOH solution * 5% NaNO2 * 10% Na2CO3 * 2% Nitroprusside solution * 0.02% Naphthol solution * 1% Sulfanilic acid * 0.1% Ninhydrin solution * Conc. HNO3 * Conc. H2SO4 * Hopkins-Cole
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CHEM 309: Integrated General‚ Organic‚ and Biological Chemistry: Spring 2011 Test # 3 You have 60 minutes to complete the exam – manage your time accordingly. An ambiguous or illegible answer is a wrong answer. Please read the directions carefully as most questions have several parts. Please do not begin until asked to do so. __________________ print your name here Pg # 3 (25 pts) Pg # 4 (21 pts) Pg # 5 (30 pts) Pg # 6 (24 pts) 1 2 1. (4) If 15.0 g of CaCl2 are present
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