![]() Question A7 is on Electrolysis – How the use of different metal electrodes in Simple Cells produces different voltages. Question A6 is on the application of Metals & Reactivity Series – Sacrificial Protection and Barrier Protection of steel underground pipes. Students are also tested on Chemical Bonding – Dot-and-cross diagram for Na 2O (an ionic compound) as well as on Mole Calculations – to calculate the Theoretical yield and then % Yield. Question A5 is on Acids & Bases – specifically on Types of Oxides and how their solutions affect the litmus paper (indicator). Question A4 is on Kinetic Particle Theory – Diffusion of Gases which depends on molecular mass of gases as well as the surrounding temperature. Question A3 is on Solubility of Salts as well as on Qualitative Analysis (QA) – Test for Cations using aqueous ammonia and sodium hydroxide solution & test for nitrate anion. Question A2 is on Atomic Structure – Isotopes as well as on Chemical Bonding – Physical Properties of Substances. Question A1 is on Organic Chemistry – Macromolecules. Here is the list of topics and concepts that are being tested in the recent Pure Chemistry Paper 2 Written Paper: Post Mortem (Topical Analysis) of Paper 2 Written Paper: I hope our students revised those concepts and questions which we have discussed previously and performed well for this Paper 2. Many of the fundamental questions and application questions that were discussed in our Sec 4 Saturday and Sunday weekly tuition classes as well as my Sec 4 Friday Revision Class came out. They found that many of the major topics/concepts which are usually tested in Paper 2 did not appear this year! They also complained that the space/lines given for them to write the answers for quite a number question in the exam script is insufficient also.Īt Winners Education, we are quite “lucky” this year. ![]() ![]() Many commented that this year’s questions are unusual as compared to the last 10 years when they compared it to questions found in the Pure Chemistry Ten Years Series books. In fact, i am hearing more students telling me that they are not very confident of doing well for Paper 2 Written Exam. Even though it is not the most difficult written paper we have seen in the last 10 years, there are still couple of “weird” questions which some students will find it hard to apply to. Paper 2 Written Paper this year is considered quite do-able by most students. This post is relevant to students taking the GCE O-Level Pure Chemistry (syllabus code: 6092) examination currently. For Sec 3 & 4 Pure Chemistry and IP Chemistry students who are aiming to Pass Chemistry with Distinction, join us in our weekly Chemistry tuition classes (available in Bras Basah & Bishan) to stay consistent in 2020. ![]() Hope you find the suggested answers and the analysis useful towards your learning. Question 10 came out in 2014, Question 17 came out in 2016 and Question 38 came out in 2011. Lastly, there were 3 repeat questions based on the O Level Pure Chemistry Ten Year Series (2009-2018). There weren’t any extremely difficult or tricky questions this year. In general, this paper is considered quite easy for those students who have strong foundation of their Chemistry Concepts and associated keywords. For the past 10-15 years, we usually have more questions on Acids, Bases & Preparation of Salts but for this year, we have only 2 questions. Topics on Kinetic Particle Theory and Ammonia were not tested at all. A total of 15 out of 40 questions were being tested based on those topics.
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