Quick answer: Le Chatelier’s Principle states that when a system at dynamic equilibrium is disturbed by a change in concentration, pressure, or temperature, the equilibrium shifts to oppose the change. In H2 Chemistry, three rules carry most of the marks: Le Chatelier’s Principle is one of the most heavily examined ideas in H2 Chemistry ChemicalContinue reading “Le Chatelier’s Principle Explained: H2 Chemistry Guide”
Category Archives: Tuition Singapore
O Level Combined Science Syllabus 2026: Chemistry & Biology Explained
Quick answer: O-Level Combined Science (Chemistry, Biology), syllabus 5088, leaves out several Pure Science topics that come back in JC. In H2 Chemistry, the biggest gaps are: In H2 Biology, the biggest gaps are: Combined Science students can take H2 Chemistry or H2 Biology at many JCs. The students who do best close these specificContinue reading “O Level Combined Science Syllabus 2026: Chemistry & Biology Explained”
Sec 3 Chemistry Tuition Singapore: What to Expect
Quick answer: Sec 3 is the first year of Pure Chemistry. It covers the foundation topics the rest of the course is built on: Students in Sec 3 in 2026 are the first cohort to sit the new Singapore-Cambridge Secondary Education Certificate (SEC) in 2027. They take Pure Chemistry at G3 level, which uses theContinue reading “Sec 3 Chemistry Tuition Singapore: What to Expect”
What Is the Integrated Programme (IP) in Singapore?
Quick answer: The Integrated Programme (IP) is a six-year course that links secondary and pre-university education, so students do not sit a national examination at the end of Secondary 4. Depending on the school, it leads to the GCE A-Level, the International Baccalaureate (IB) Diploma, or the NUS High School Diploma. IP is not oneContinue reading “What Is the Integrated Programme (IP) in Singapore?”
O Level Biology Syllabus 2026 Explained (Pure & Combined)
Quick answer: The 2026 Singapore-Cambridge GCE O-Level Pure Biology syllabus (6093) is set by SEAB, MOE and Cambridge and has 14 topics in four themes. Biology can also be taken as part of Combined Science (5087 Physics/Biology or 5088 Chemistry/Biology), which has 12 Biology topics and leaves out Excretion and Homeostasis. This guide explains whoContinue reading “O Level Biology Syllabus 2026 Explained (Pure & Combined)”
Electron Affinity Explained: H2 Chemistry Guide
Quick answer: First electron affinity is the enthalpy change when one mole of gaseous atoms each gains one electron to form one mole of gaseous 1− ions. It is usually negative (energy released). The second electron affinity is always positive, because the incoming electron is repelled by the ion’s existing negative charge. Electron affinity explainsContinue reading “Electron Affinity Explained: H2 Chemistry Guide”
Lattice Energy Explained (H2 Chemistry)
Quick answer: Lattice energy is the enthalpy change when one mole of an ionic solid forms from its gaseous ions under standard conditions. It is negative because lattice formation releases energy. Its magnitude increases with higher ionic charge and smaller ionic radius, and you find it from a Born-Haber cycle using Hess’s law. Lattice energyContinue reading “Lattice Energy Explained (H2 Chemistry)”
O Level Chemistry Syllabus 2026 Explained
Quick answer: The 2026 Singapore-Cambridge GCE O-Level Pure Chemistry syllabus (6092) has 12 topics in three sections and is assessed through three compulsory papers: Paper 1 (40 multiple-choice questions, 30%), Paper 2 (structured and free-response, 80 marks, 50%) and Paper 3 (practical, 40 marks, 20%). Chemistry within Combined Science (5086 and 5088) uses the sameContinue reading “O Level Chemistry Syllabus 2026 Explained”
Photosynthesis Explained: O-Level Biology Guide (6093)
Quick answer: Photosynthesis is the process by which green plants use light energy, absorbed by chlorophyll, to convert carbon dioxide and water into glucose and oxygen. At O-Level, you need to state the word and chemical equations, explain how leaf structure and transport tissues support the process, identify and explain the three limiting factors (lightContinue reading “Photosynthesis Explained: O-Level Biology Guide (6093)”
DNA Replication Explained: H2 Biology Guide (9477)
Quick answer: DNA replication is semi-conservative — each new DNA molecule contains one original strand and one newly synthesised strand. Helicase unwinds the double helix by breaking hydrogen bonds between base pairs; primase lays down short RNA primers; DNA polymerase extends new strands, but only in the 5’→3′ direction, which is why one strand (leading)Continue reading “DNA Replication Explained: H2 Biology Guide (9477)”
