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Browse all of our blog posts in the IB category here.
IB Chemistry Reactivity 1.1 enthalpy changes: the calorimetry, Hess cycle, and bond-energy question families that decide a 5 from a 7 on Paper 2, with rubric-aware tactics.
Read postReading an ester as a ketone, an ether as an alcohol, missing a chiral centre: the naming and drawing errors that cost marks in Paper 1 and Paper 2.
Read postIB Chemistry Structure 2.4 walks from bonding models to bulk material properties. Learn the seven question families and marking logic that decide a 6 from a 7.
Read postGroups are numbered 1, 2 and 13-18 in Data Booklet section 5, and the mark scheme keys on that: group 1 alkali, 17 halogens, 18 noble gases.
Read postIB Chemistry Structure 2.3 metallic model explained: electron sea, lattice strength, and the four properties that decide your Paper 1 and Paper 2 mark band.
Read postIB Chemistry Structure 2.2 covalent model explained: Lewis structures, resonance, VSEPR, and how to write diagram-first answers that reach the 7 band.
Read postMg2+ not Mg++, brackets on polyatomic ions, and the transfer arrow examiners look for. Drill NaCl, MgO and CaCl2 until the diagram is automatic.
Read postMaster IB Chemistry Structure 1.5 ideal gases with worked gas law examples, Paper 1 question families, and a 6-step preparation strategy for SL and HL candidates.
Read postIB Chemistry Structure 1.4 explained: how to handle mole, Avogadro, mass, and volume calculations in Paper 1 and Paper 2 without losing rubric marks.
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