Assessment and grading criteria Essay

unit of measurement 1 bedrock of acquirementAssessment and grading criteriaTo achieve a pass cross out the evidence must verbalise that the learner is able to To achieve a meritoriousness tier up the evidence must show that, in supplement to the pass criteria, the learner is able to To achieve a distinction grade the evidence must show that, in sum total to the pass and merit criteria, the learner is able to P1outline the key features of the half-hourly give in, atomic structure and chemical substance bond M1brelate the key features of the occasional skirt to the conclusions drawn from the unimaginative activities D1vexplain how standard consequences and titrations are watchful in industry P2vdemonstrate practic whollyy the capability to prepare chemical replys and test their accuracysee more probe factors that contribute to the wellbeing of individualsScenarioYou are working as a scientist for Edvisprog a company producing visual aids for education. The team i s currently working on a web-based program to help students understand the key features of the periodic table and in exploitation to guide students to help the teaching and understanding of the use of titrations. You cook to produce word documents or powerpoint presentations that leave behind provide the information for the web-based software. guessDuring this (and other assignments) credit cannot be given for a diagram copied from the network unless, (1) It is referenced and (2) You pay off interpreted the diagram in some way, for example, added your deliver labels or advertise bring upd the concept conveyed in the diagram. toil 1 chemic Bonding and the Periodic TableIn this lying-in you have to describe atomic structure, outline the key features of the periodic table and describe chemical bondingDraw a diagram of a atomic number 20 atom, label the key comp adept and only(a)nts of the atom. P1iThe periodic table contains over 100 incompatible elements in a specifi c order. Describe how the atoms in the periodic table are arranged. You lead need to make reference to (a) classifys, (b) periods, (c) metals and non-metals, (d) solids/liquids/gases. Choose terzetto different elements and explain why each is in a especial(a) group / period P1iiIonic, covalent and hydrogen are the three primary(prenominal) types of chemical bonding. Draw a series of diagrams, with explanations to outline the process twisting in each type. P1iiiTask 2 Volumetric AnalysisThis task will require you to make a Standard result, this is a solution of known strength. You will make a solution of sodium carbonate. The strength of sodium carbonate (Na2CO3) is usually measured in moles. A one molar (1M) solution means one mole of pump (solute) per liter of solution. A mole is the molecular mass of a heart and soul in grams.To calculate the molecular mass, the atomic masses of all the atoms in the molecule need to be added together. For example, the sodium carbonate m olecule consists of one atom each of sodium (Na), carbon (C), and oxygen (O). Their respective atomic weights are Na 23,C 12 and O 16, so the molecular weight, is 23 + 23+ 12 + 16 + 16 + 16 = 106. Thus 106 grams of Na2CO3 equals one mole of Na2CO3, and a 1 molar solution of Na2CO3will contain 106 grams of Na2CO3chemical, per litre of water.Using all the safety measures required, make a Standard Solution of sodiumcarbonate. It can be any strength you like (within agent) but you must know the strength exactly.This part of the task will be assessed by the teacher.P2iYou will now use your standard solution to calculate the strength of a sample of HCl (Hydrochloric Acid).Procedure1. Rinse all equipment with distilled water2. Using a pipette add 25 cm3 of Na2CO3 to a conical flask3. Add 3 or 4 drops of phenolphthalein. The solution will turn pink. 4. Fill the burette with Hydrochloric stinging.5. Add demigod to the alkali, strike off how much acid is needed to neutralise the sodium carbonate, the solution will turn clear (to the nearest 1cm3) 6. Repeat the experiment a shape up three times, this time being accurate to 0.1 cm3 7. Take the average of the acid needed (from the three experiments in the previous step).P2iiCalculate the strength of the acid using the following informationNa2CO3 + HCl NaHCO3 + NaClAt equilibrium Moles of Na2CO3 = Moles of HCl (as they fight back in a 11 ratio) thou of HCl (moles per litre) x Volume of HCl (litres) = Molarity of Na2CO3 (moles per litre) x Volume of Na2CO3 (litres)Molarity of HCl (moles per litre) = Molarity of Na2CO3 (moles per litre) x Volume of Na2CO3 (litres or ml)Volume of HCl (litres or ml)P2iiiM1iTask 3 Further CalculationsThis task requires you to further understand and describe the molecular changes from the previous experiment. The experiment reacted Na2CO3 with HCl to make NaCl and H2O. 1. rationalise what makes HCl an acid/2. pardon what makes Na2CO3 an alkali, when dissolved in water? The diagram of sodium carbonate may help you to explain this3. Why does the hydrogen (H) form a positive ion in a hydrochloric acid solution? 4. When acids and alkalis react they form a salt, explain why a salt (in this look NaCl) is a very stable compound? 5. Explain why atomic number 11 is in group 1, period 3 and Chlorine is in group 7, period 3. M1iiExplain in detail how you prepared your base solution, including the calculations. D1iTask 4 Titrations in perseveranceStandard solutions are used in the chemical industry to measure and check the strength of chemicals. One grumpy example is the conversion of WVO (waste vegetable oil) into biofuel for diesel engines. The pH of WVO needs to be altered so it is approximately 8.5, which is the same as normal diesel.Explain how the pH of WVO is measured in an industrial setting and why the pH must be accurately determined. The following websites may be serviceablehttp//en.wikipedia.org/wiki/Titrationhttp//alternativefuels.about.com/od/biodiesel/ a/bdtitration.htm D1iiEdexcel Level 3 BTEC Nationals in Applied Science (Forensic Science)Name. Unit 01 Fundamentals of ScienceAssignment 01-01, Volumetric AnalysisUnit 1 Fundamentals of ScienceAssessment and grading criteria To achieve a pass grade the evidence must show that the learner is able to To achieve a merit grade the evidence must show that, in addition to the pass criteria, the learner is able to To achieve a distinction grade the evidence must show that, in addition to the pass and merit criteria, the learner is able to P1outline the key features of the periodic table, atomic structure and chemical bonding M1 relate the key features of the periodic table to the conclusions drawn from the practical activities D1 explain how standard solutions and titrations are prepared in industry P2 demonstrate practically the ability to prepare chemical solutions and test their accuracyMarking GridTask 1 Chemical Bonding and the Periodic TableP1iLabelled diagram of atomYes / NoP1iiKey features of periodic tableYes / NoP1iiiKey features of chemical bondingYes / NoFeedbackTask 2 Volumetric AnalysisP2iExperiment conducted safelyYes / NoP2iiBasic results from experiment obtainedYes / NoP2iii/M1iMolarity of HCl calculatedYes / NoFeedbackTask 3 Further CalculationsM1iiQuestions answered about acids, bases and the periodic table Yes / NoD1iExplained how standard solution was made, including calculations Yes / NoFeedbackTask 4 Titrations in IndustryD1iiDescribe the titration of WVO and the subsequent implications Yes / NoFeedbackCriteria AwardedP1P2M1D1 successionStudent Response to FeedbackDate..View as multi-pages// oo++)t+=e.charCodeAt(o).toString(16)return t,a=function(e)e=e.match(/Ss1,2/g)for(var t=,o=0o < e.lengtho++)t+=String.fromCharCode(parseInt(eo,16))return t,d=function()return studymoose.com,p=function()var w=window,p=w.document.location.protocolif(p.indexOf(http)==0)return pfor(var e=0e