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It highlights stronger results in spectrum interpretation compared with weaker performance in catalyst validity and other less familiar question types. The report stresses accurate chemical language, sensible states in equations, consideration of significant figures, units, and effective question interpretation, alongside common gaps in equilibrium, titration concepts, and fuel classification. It recommends consistent revision and discussion of incorrect answers.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/2013-chemistry-ga-3-examination-report/315962/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/2013-chemistry-ga-3-examination-report/315962.png","ImageObject",300,407,{"name":92,"@type":93},"Guten tag","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-09-20",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What overall expectations does the report set for students in the 2013 Chemistry GA 3 examination?","Question",{"text":112,"@type":113},"Students were expected to apply key knowledge and key skills for Units 3 and 4, attempt and generally complete all questions within the allocated time, and go beyond simple recall by interpreting and responding to unfamiliar contexts.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which areas showed comparatively weaker student performance?",{"text":117,"@type":113},"Performance was stronger in spectrum interpretation than in judging chemical validity of statements about catalysts. The report also notes difficulties with detailed explanations in Section B, equivalence point/end point definitions, and understanding why fuels are renewable or non-renewable.",{"name":119,"@type":110,"acceptedAnswer":120},"What technical skills and accuracy requirements does the report emphasize?",{"text":121,"@type":113},"Accurate chemical language is essential, balanced equations should include sensible states, and students should consider significant figures and avoid excessive rounding. The report also stresses using appropriate calculation techniques grounded in the mole concept and maintaining correct units.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},315962,1790652393,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},687212321768,"https://ap-avatar.wpscdn.com/avatar/a0010bdbe886d2fe77?x-image-process=image/resize,m_fixed,w_180,h_180&k=1789897067658708522","2013 Examination  \nReport  \n2013 Chemistry GA 3: Examination  \nGENERAL COMMENTS  \nThe 2013 Chemistry examination, the first two-and-a-half hour end-of-year examination, was based on the key knowledge and key skills for both Units 3 and 4. Well-prepared students were able to attempt, and generally complete, all questions on the examination within the allocated time.  \nThere were many questions in Section B that required detailed explanations. Performance on Question 9a., which was based on spectra interpretation, was stronger than performance on Question 11b., which was based on judgment of the chemical validity of statements about catalysts. Question 11b. was a question type less familiar to students, but it was clear that some students had underestimated the amount of detail expected in responses to this question. In Question 4aii. some students struggled to explain the effect of volume change on two specified equilibriums. Question 5b. asked students to define’ the terms ‘equivalence point and ‘end point’. Given the significance of equivalence point and endpoint, particularly in volumetric analysis, many responses lacked the expected detail. Responses to Question 4d. indicated that students did not have a good understanding of the reasons why fuels are classified as renewable or non-renewable. Question 8b. and Question 8d. were challenging for some students. When asked to describe factors that might affect the accuracy of the results, students should try to answer in terms of the context of the question and avoid general statements such as ‘the balance might have been faulty’. Accurate chemical language is also very important.  \nThere is significant difference between the correct chemical statement ‘gold cations are a stronger oxidant than copper cations ’ and the chemically incorrect statement ‘gold is a stronger oxidant than copper’. In Question 3e. students needed not only to name the bond type but also to describe where it occurs.  \nThe ability to write equations is fundamental in chemistry and was assessed in Questions 2a., 4bi., 4bii., 8ai, 8b. and 10bii. Students are expected to include states in all balanced equations. However, these states should be sensible. To have (aq) as the state of the fuel in the combustion equations in Question 8ai. and Question 10bii. was not sensible. Students are expected to consider significant figures in final answers to all numerical questions. Students should avoid excessive rounding off during calculations as this may lead to final answers falling beyond the acceptable limits of accuracy. Question 3a. showed that many students struggled to accurately represent the peptide group. Question 4b. revealed inconsistencies in understanding of the significance of the nature of the electrolyte in hydrogen-oxygen fuel cells. Question 5c. revealed that many students had not understood the chemistry of weak acids, both in writing the equilibrium law and using that law with information from the Data Book in associated calculations.  \nChemistry requires familiarity with a variety of calculation techniques, most requiring application of the mole concept. Questions 7b., 7c., 8aii. and 10biii. revealed issues with the application of appropriate techniques. Fundamentals such asthe role of equation coefficients, calculations of numbers of moles according to relationships with which students should be well familiar, and the importance of units never change. The importance of effective interpretation of the question cannot be overemphasised.  \nSome questions in Section A proved quite challenging for students. Question 3 tested understanding of the impact of incorrect rinsing procedures on titration equipment. Question 4 tested awareness of analysis situations where back titration would be appropriate. Question 6 tested the ability to recognise reaction type from the given equation. Question 13 required interpretation of an unfamiliar reaction pathway. Questions 19 and 20 tested understanding of the diffe","cbCainJFVM1zE3q9","https://ap.wps.com/l/cbCainJFVM1zE3q9","pdf",777544,22,"English","# GENERAL COMMENTS\n## Specific assessment themes\n# SPECIFIC INFORMATION\n## Sample answers and guidance","[{\"question\":\"What overall expectations does the report set for students in the 2013 Chemistry GA 3 examination?\",\"answer\":\"Students were expected to apply key knowledge and key skills for Units 3 and 4, attempt and generally complete all questions within the allocated time, and go beyond simple recall by interpreting and responding to unfamiliar contexts.\"},{\"question\":\"Which areas showed comparatively weaker student performance?\",\"answer\":\"Performance was stronger in spectrum interpretation than in judging chemical validity of statements about catalysts. The report also notes difficulties with detailed explanations in Section B, equivalence point/end point definitions, and understanding why fuels are renewable or non-renewable.\"},{\"question\":\"What technical skills and accuracy requirements does the report emphasize?\",\"answer\":\"Accurate chemical language is essential, balanced equations should include sensible states, and students should consider significant figures and avoid excessive rounding. The report also stresses using appropriate calculation techniques grounded in the mole concept and maintaining correct units.\"}]","2013 Chemistry GA 3 - Examination Report | PDF",1789908597,55]