This week, G9 chemistry focused on Chapter 5, "Chemical Calculations". Students systematically mastered the calculation methods for key parameters such as substance purity and yield. Meanwhile, the important concept of concentration was introduced, with detailed explanations of its definition, units, and various calculation approaches. In addition, to enhance students’ practical application of knowledge, an acid-base titration experiment was conducted this week. Students operated with rigor, applied the learned calculation methods to accurately determine the concentration of specific substances, integrated theory with practice, deepened their understanding and retention of knowledge, and improved their skills in scientific inquiry and practical operation.

This week, G10 chemistry focused on experimental operation skills. Students systematically learned key experimental methods including paper chromatography, crystallization, and simple distillation. They also became familiar with common chemical laboratory instruments, mastering their uses and standard operating procedures.

To reinforce what they had learned, targeted practice with past exam questions was arranged in class. This helped students integrate experimental principles with problem-solving techniques, effectively enhancing their ability to apply knowledge and their overall experimental literacy.

This week, Grade 11 Chemistry kicks off the Organic Chemistry module, focusing on the core content of alkanes and alkenes. Students are required to master the structural differences (saturated/unsaturated) between the two types of hydrocarbons, their nomenclature rules, and typical properties: free-radical substitution reactions of alkanes, and addition reactions of alkenes (e.g., reactions with bromine water and hydrogen). Aligned with the requirements of the CIE syllabus, the course uses comparisons of experimental phenomena (e.g., whether bromine water decolorizes or not) to help students understand the influence of functional groups on properties.

This week, G12 Chemistry focused on chemical analysis techniques, a key challenging and pivotal module. Students systematically learned various chromatographic analysis methods, including paper chromatography, thin-layer chromatography, and gas-liquid chromatography. They also were introduced to core spectroscopic analysis techniques such as proton nuclear magnetic resonance (¹H NMR) and carbon-13 nuclear magnetic resonance (¹³C NMR). Characterized by strong theoretical underpinnings and high abstraction, this knowledge places relatively high demands on students' logical comprehension and knowledge application abilities.