| Understands the topic but calculations go wrong | Weak quantitative method | Build reliable multi-step working |
| Paper 1 mistakes repeat | Misconceptions or rushed reasoning | Diagnose gaps and improve accuracy |
| Data questions feel unfamiliar | Weak interpretation | Connect data to chemical principles |
| Equations are learned but not applied | Procedural understanding | Use equations in unfamiliar contexts |
| Longer responses miss key marks | Incomplete chemical reasoning | Improve explanation and terminology |
| HL content feels disconnected | Weak conceptual links | Connect Structure and Reactivity |
| Experimental questions are difficult | Weak scientific reasoning | Variables, methods, uncertainty and interpretation |
| Scientific Investigation feels unclear | Research-design weakness | Ethical guidance on method, data and evaluation |
| Runs out of time | Exam strategy | Timed practice and question prioritisation |