problem solving and decision making in psychology

The gas mixture passes out of the horizontal tube, and into the liquid in the side-armed boiling tube. Rates of reaction experiments are a good source of questions, and it is important that you know about things like orders of reaction, rate constants and half life. Make sure that you have a pencil sharpener as well. Paper 1 (AS): Multiple Choice. (2 marks) 1 (c) (iii) Calculate the enthalpy of formation of gaseous chlorine trifluoride, ClF 3(g). All I want to concentrate on for now are the diagrams themselves. Friday 27 May 2016 Morning Time allowed: 1 hour 30 minutes . It would pay you at this point to revise most of Section 8.1 from the Section 8 Menu. Verified Purchase. Everything else apart from the points and any lines you draw should be in ink. You can find all CIE Chemistry International AS and A-Level Paper 5 past papers and mark schemes below: June 2008 MS - Paper 5 CIE Chemistry A-level June 2008 QP - Paper 5 CIE Chemistry A-level Label critical bits of apparatus such as measuring cylinders or gas syringes or expanded polystyrene cups (in thermochemistry experiments) or thermometers. It isn't going to force its way out through the water into the collecting tube. A level Chemistry consists of five papers: three at AS level and two at A2 level. An introduction to some of the problems in preparing for Paper 5. Paper 2. a good ruler for straight lines. It is quite likely that at least one of the results that you are given will be anomalous. In the 3 years from 2014 to 2016, CIE gave you a piece of graph paper with the axes already labelled so there isn't a problem. You are quite likely to have to explain what might have caused it to be wrong. To return to the list of all the CIE sections. AS & A-Levels from 2015. Paper 5 is a written paper to test your practical skills that you acquired during your Cambridge International A Level course. When asked to draw a diagram, ALWAYS mention the volume of the apparatus being used. That means that your axes needn't necessarily start from 0. But there is no reason why they couldn't go back to their previous practice of just giving you a blank grid where you have to decide how to set it out. chemguide: CIE A level chemistry support: paper 5: diagrams The slope is given by the change in the y-axis value divided by the change in the x-axis value - Δy/Δx. Draw your straight line with a ruler so that there is as even a scatter of points either side of the line as you can manage (ignoring any anomalous points). If you get the sign wrong, you will lose the mark. If a diagram includes an electric circuit, you can use conventional physics symbols for the power source and any meters you use, but label them clearly. A level chemistry paper 5 diagrams Carrollton essay on the hobbit by j.j.r. Chemistry A Level Paper 5 (P5) Solved Past Papers Hello everyone, Here are Chemistry A Level Paper 5 solved papers in which the answers are written in the full form as we are aware that the CIE marking schemes are sometimes hard to understand plus it does not contain the respective diagrams. Electronegativity. How to calculate the relative formula mass of the basic copper(II) carbonate and the value of x in CuCO3.Cu(OH)2.xH2O by using data from the graph. Introduction. A level Biology Paper 5 Notes. (If you have been unable to obtain an answer to part (c)(ii), you may assume that the This A Level Chemistry revision page provides access to all the A Level Chemistry past papers for AQA, OCR and Edexcel as well as worksheets. WMP/Jan11/CHEM1 Do not write outside the box 2(c) A mass spectrum of a sample of indium showed two peaks at m/z = 113 and m/z = 115. Uploaded by. Your final graph will look something like this: This is no different from drawing straight line graphs, except that a good curve is a bit more difficult to draw well. a really good clean rubber. When you draw the curve, leave it out. Are there any anomalous points? Chemguide: Support for CIE A level Chemistry. A-Level Chemistry Papers. For example, you might be measuring something at various different times which you choose, or at various different temperatures, or at various different concentrations. Paper 1 Inorganic and Physical Chemistry . Paper 5. In this case, the point is below the trend line. Chemguide: Support for CIE A level Chemistry. If you have a straight line, the gradient will obviously be for the whole line. One of the gases reacts with that (which is what you want) and the other will bubble through into the gas syringe or measuring cylinder. The introduction to the question will give you a lot of useful information, and you will need to read it carefully for hints. Don't try to draw diagrams using a pen - you have to be able to rub out mistakes. If you want your curve to have a bigger radius, you could pivot your arm around the elbow joint instead. Electronegativity. AS Paper 1. A transparent ruler is useful for drawing best fit straight lines because you can easily judge where all the points are relative to the line you are drawing. How to calculate the relative formula mass of the basic copper(II) carbonate and the value of x in CuCO3.Cu(OH)2.xH2O by using data from the graph. Introduction. To return to the list of all the CIE sections. Volumetric apparatus and techniques. In this case, the gradient would be recorded as the change in concentration per minute at that point - again by measuring Δy/Δx. 4500 J/g 2000 J/g One of the Paper 5 questions will ask you to design an experiment for some purpose. The one most often used is gas syringe. F324 Mark Scheme June 2015 5 Question Answer Mark Guidance 1 (a) (Relative) solubility (in stationary phase) 1 ALLOW how well the compound dissolves IGNORE retention time AND partition DO NOT ALLOW adsorption OR absorption (b) (i) Compound B AND M+/molecular ion peak (at m/z) = 124 1 ALLOW Mr = 124 IGNORE compound B because m/z = 124 There should be nowhere in the diagram where any gas that is supposed to be collected can go that you don't want it to go. 5.1 Exercise 1 - calculating approximate enthalpy changes 5.1 Exercise 2 - Born-Haber cycles 5.1 Exercise 3 - ionic compounds in solution 5.1 Exercise 4 - entropy and free energy Answers to 5… WMP/Jan13/CHEM5 Turn over (03) Do not write outside the box 3 1 (c) (ii) Calculate a value for the bond enthalpy of the Cl F bond. AQA. Chemistry is above everything a practical subject, and you shouldn't really find any great difficulty with Paper 5 if you have done a lot of practical work throughout the time you have been learning chemistry. The first question is the planning question, in which candidates are required to design an experimental Alternatively, you might have mis-weighed the magnesium. Be careful with this. For showing that half life is constant, the half lives don't have to follow on from each other. Chemguide: Support for CIE A level Chemistry. Curves are obviously more difficult to draw than straight lines especially if your results have an amount of experimental error. At the end, rub out all the attempts that went wrong. It is also likely that you will have to label the anode and cathode. CIE insist in their Examiner's Reports that you draw graphs using an HB pencil. If they are the same, then the reaction is first order. ... Dot-Cross Diagrams. You could not single-handedly going bearing in mind ebook heap or library … The convention is that chemistry diagrams should be a cross-section through the apparatus - not a picture of the apparatus. Diagram Justification . … The diagrams below suggest two possible solutions to a problem in which a solid is going to be heated in the horizontal tube. What might cause that? AS Paper 2. Revise for your A-levels & GCSEs from latest past papers, revision notes, marking schemes & get answers to your questions on revision, exams or student life on our forums. Nothing else will do for plotting the points or drawing the line. Post author By O & A Level Notes; Post date May 14, 2015; 12 Comments on A Level Chemistry Paper 5 Tips; For planning section: 1. In this case, the third point falls underneath the trend for all the rest of the points. Yes - the fifth point looks a bit higher than the trend. Would CIE penalise you for this? Read 2 reviews from the world's largest community for readers. CIE Chemistry 9701 AS / A Level Paper 3 Notes. Diagrams should be labelled in ink, but don't overdo the labelling. My daughter got hi book to help with her exams she found it very helpful, and was very pleased with it, happy we got it Read more. It doesn't matter as long as they are clearly labelled. You need to be able to rub out mistakes leaving no trace. Paper 5 consists of two questions (each carrying 15 marks) and the time duration of this paper is 1 hour and 15 minutes. Question Answer. Pages in this section cover a number of topics arising from my analysis of recent exam papers, mark schemes and Examiner's Reports for Paper 5. Every mark you waste could be enough to drop you through a grade boundary so that your overall result isn't good enough for what you want to do. If you have to decide for yourself, there are two things to think about - which variable goes on which axis, and what sort of scale to use. Paper 3. You must give the co-ordinates of each point in the standard format of (x, y). A level Biology Paper 5 Notes. Label all the solids and liquids present - including the water if you collect a gas over water. That would lose you the mark for a workable experiment. In this case, you would quote the co-ordinates of the end points of your triangle as (mass of magnesium value, volume of hydrogen value). The first question is the planning question, in which candidates are required to design an experimental Nothing else will do for plotting the points or drawing the line. You can buy flexible rulers which will stay in whatever shape you bend them into. We will look at how you might design this piece of apparatus on a separate page. It isn't uncommon for people to forget to draw one of the bungs! Paper 1 (AS): Multiple Choice. […] It is essential that the centre of the cross exactly matches the data you are plotting - that is one of the reasons why a very sharp pencil is essential. You would trap out the gas reacting with the liquid OK, but the other gas will just escape through the open top of the tube. You should be able to trace a clear path for any gas right the way through the diagram without it meeting a barrier. Tanvir Ahmed Mazumder. Sara Uyen Tran. CIE Chemistry 9701 AS / A Level Paper 3 Notes. You should not use points that you have plotted for the end points of the triangle unless they happen to fall exactly on the line. Step 5. In each case, the concentration is halved, and the time taken for it to fall by half is measured. Each of these would be the independent variable. Back to one of the original diagrams again. Paper 3. Step 5. Here is another version of one of the diagrams. Choosing sensible apparatus in design questions. LEGACY OCR A-LEVEL CHEMISTRY A. That means that however accurately you plot them, they probably won't all fall on a straight line or smooth curve. Graphs. AS Paper 1. It isn't necessary to label every single bung or bit of glass or rubber tubing. As & A Level Chemistry Through Diagrams book. Chemguide: Support for CIE A level Chemistry. The reasons will vary from experiment to experiment, but your answers should be as precise as possible. You must end up with only one clean line! Physics A Level Paper 5 ( P5 ) Solved Papers Hello everyone, Here are Physics A Level Paper 5 solved papers in which the answers are written in the full form as we are aware that the CIE marking schemes are sometimes hard to understand plus it does not contain the respective diagrams. In this particular case, where the line goes through the origin, you could perfectly well use the origin as one of the ends of the triangle. Measuring the gradient of a straight line. You won't get any credit for saying "There must have been an experimental error." Paper 1. The examination paper does not require laboratory facilities. ... To do this, simply read the syllabus sentence, and try to recall the points, equations and diagrams you made in the notes. It isn't a proper cross-section. Paper 3. The data which you are given to plot is likely to have two separate problems deliberately built-in - and that's true whether you end up with a straight line or a curve. Paper 1. I am including a vertical scale on this graph because I shall need it further down the page. If it is a curve it will be at some point on the curve. Paper 1: Inorganic and Physical Chemistry . AS Paper 2. Why wouldn't this work? Obviously, in this case, the slope is changing all the time, and so you will be asked to find the gradient at some particular point. Choose a scale so that is true. Question 1: [Planning – 15 marks] This question of paper 5 tests your ability to plan experiments. Question Answer. Laura Simons June 26, 2017 at 5:43 pm. Section A . If the graph is sloping downwards, then the gradient is negative, and that must be shown in your answer. That is just a complete waste of a mark. A Level Chemistry Paper 5 Tips. You are told that one of the gases reacts with something which you can put in the side-armed boiling tube and so doesn't get any further through the apparatus. Perhaps you didn't have as much magnesium as you thought you had. For example, you could measure the half life as the concentration falls from 1.0 to 0.5, and from 0.8 to 0.4, or 0.6 to 0.3. Although the wording will look different in many places, the teaching content remains largely the same 2. removed and added topics, and moved some content from AS to A Level and vice versa; but the teaching time still falls within the recommended guided learning hours 3. numbered the learning outcomes rather than listed by letters 4. … Post author By O & A Level Notes; Post date May 14, 2015; 12 Comments on A Level Chemistry Paper 5 Tips; For planning section: 1. Here you will find past exam papers and mark schemes for each of the modules below. A level Chemistry consists of five papers: three at AS level and two at A2 level. Graphs. Chemguide: Support for CIE A level Chemistry. When asked to draw a diagram, ALWAYS mention the volume of the apparatus being used. That is too late! WMP/Jan13/CHEM5 Turn over (03) Do not write outside the box 3 1 (c) (ii) Calculate a value for the bond enthalpy of the Cl F bond. The examiners will almost certainly ask you to record the co-ordinates of the points you have used to draw your triangle. We will look at that later. Do not write outside the box . For this paper you must have: • the Periodic Table/Data Sheet, provided as an insert (enclosed) • a ruler with millimetre measurements • a calculator, which you are expected to use where appropriate. When asked to draw a diagram, ALWAYS mention the volume of the apparatus being used. Draw diagrams with a sharp HB pencil, and have a clean rubber available. Paper 2. Thankyou for helping so much with my chemistry a level, your guides have been a life saver! Introduction. That also means that you are making it easy for your examiner to check that you have plotted things properly. The dependent variable always goes on the y-axis. Question Answer. A-Level Biology CIE Paper 5 Tips. Make sure that you have a pencil sharpener as well. Paper 5 Menu. Use the bond enthalpy value that you obtained in part (c)(ii). 4 . Examiner's Reports constantly criticise students for not giving these correctly. You will need: a very sharp HB pencil. Assuming that they are plotted correctly, do not include any anomalous points when you draw your line! Answer . ... To do this, simply read the syllabus sentence, and try to recall the points, equations and diagrams you made in the notes. AS Paper 1. What you should do is label anything which isn't totally obvious. This graph shows data gathered during a rate of reaction experiment in which the concentration of a reactant was measured against time. If the point you are plotting is suposed to fall on a grid line, then even if you miss by a tiny bit, you will be penalised. The next graph actually finds three separate half lives for the same reaction. You are then going to draw a line of best fit which needn't necessarily go through any of the points which you have plotted (apart from the origin in this particular case). Teaching A2 Physics Practical Skills. In this case, if you had zero mass of magnesium, you would obviously get zero hydrogen produced - so the line must go through the origin. CIE insist in their Examiner's Reports that you draw graphs using an HB pencil. Make sure that you have a pencil sharpener as well. A Level Chemistry Paper 5 Tips. Drawing diagrams This takes time - don't leave it until your revision. Our A Level Chemistry revision guides have been created specifically for each of the main examination boards, AQA, CIE, OCR, Edexcel, Eduqas & WJEC. 6 *06* IB/M/Jun18/7404/1 Do not write outside the box : 0 3 A student heated a solid sample of Na 2CO 3. 1.3 Exercise 1 - dot-cross diagrams 1.3 Exercise 2 - electronegativity 1.3 Exercise 3 - molecular shapes 1.3 Exercise 4 - structure and bonding summary I 1.3 Exercise 5 - structure and bonding summary II Answers to 1.3 Exercises Paper 5. Materials . In the diagrams above, both of these are true. That means choosing a scale where it is easy to plot the points without having to do fiddly calculations. To make it easier for teachers to understand what's required, we have: 1. updated the learning outcomes, providing clarity on the depth to which each topic should be taught. Chemistry A Level Paper 5 (P5) Solved Past Papers Hello everyone, Here are Chemistry A Level Paper 5 solved papers in which the answers are written in the full form as we are aware that the CIE marking schemes are sometimes hard to understand plus it does not contain the respective diagrams. Paper 2. Start off by drawing the line lightly, and then make it firmer when you are satisfied. Help topics for Paper 5. (If you have been unable to obtain an answer to part (c)(ii), you may assume that the The first thing to ask yourself each time is whether the line should go through the origin (0,0). Finding half life is easy. In particular you should know that half life is constant for a first order reaction, and the relationship between the half life and the rate constant for a first order reaction. The relative atomic mass of this sample of indium is 114.5 2 (c) (i) Give the meaning of the term relative atomic mass. Use the bond enthalpy value that you obtained in part (c)(ii). The Examiner's Reports make a very strong recommendation that points should be plotted using a small cross. If you are drawing the curves free-hand, help yourself by taking advantage of the way your wrist and arm moves. Complete AS and A level Chemistry Past Papers Cambridge International AS and A Level Chemistry builds on the skills acquired at Cambridge IGCSE (or equivalent) level. There must be no doubt about where the centre of your cross is. The other gas is collected in the gas syringe or over water in an inverted measuring cylinder. You are quite likely to be asked to account for any anomalous points you find. … You have to explain what the error might have been, and why it made the point too high or too low. Your graph should take up most of the graph paper, and not be squashed up in one corner! Paper 5. In the graph we've drawn above, you would have to turn the paper upside-down to take advantage of this, of course. 5.0 out of 5 stars As and A level chemistry book.

Yo La Tengo Covers, Umbra Valet Mirror, Black Woman Vector, Edexcel A Level Physics Electricity Questions, Croutons East Bend, Power Plate Not Turning On, Aero Bubbles Calories,