: The full question-answer book is available at DSEB .
: Distinguishing between ionic compounds (like BaCl2cap B a cap C l sub 2 ) and simple molecular structures (like OCl2cap O cap C l sub 2 ) was a key concept in Q3.
You can find the exam papers and marking schemes on various educational platforms. Common reliable sources include:
Reviewing Level 5 Sample Scripts allows you to see how high-achieving students structured their answers to "unfamiliar situations," such as designing scientific investigations in Paper 1 Q5. 2018 DSE Chemistry Marking Scheme | PDF - Scribd
: A major question involved calculating the mass of NaClO3cap N a cap C l cap O sub 3 using redox titration with Na2S2O3cap N a sub 2 cap S sub 2 cap O sub 3 and starch as an indicator. Top 3 Common Weaknesses (HKEAA Report)
: Review the 2018 Examination Briefing for statistical data and common student weaknesses.
: Access the elective sections (Industrial, Materials, and Analytical Chemistry) at DSEB .
: Questions on the Maxwell-Boltzmann distribution curve and molecular kinetic energy tested theoretical depth. Organic Chemistry : Isomerism in alkenes ( C4H10cap C sub 4 cap H sub 10
