Cambridge IGCSE · 分析与预测
2024 Cambridge IGCSE Science - Combined (0653) 历年真题分析与预测
A thorough analysis of the May/June 2024 Cambridge IGCSE Combined Science (0653) paper suite, focusing on Extended Theory (Paper 43), Core Theory (Paper 33), and Alternative to Practical (Paper 63). The assessment tests multi-disciplinary synthesis across biology, chemistry, and physics with a strong emphasis on quantitative unit conversions and structural drawing skills.
更新: 2026年6月13日
分析模拟试题
难度 3.8/5
总分
160
时间
180 分钟
最高频考点
—
分卷
卷二: 選擇題 (Extended): 40 分 · 45 分钟Paper 4: Theory (Extended): 80 分 · 75 分钟Paper 6: Alternative to Practical: 40 分 · 60 分钟
考官重点
官方报告整理常见失分点
- Forgetting to convert units, particularly converting wave speed from km/s to m/s, or converting seconds to hours in electrical charge calculations.
- Omitting single continuation bonds on both ends of a polymer chain drawing.
- Giving vague terms like 'hot' or 'heat' instead of specifying industrial requirements like 'high temperature' and 'catalyst' for hydrocarbon cracking.
常见误区
- Believing that chemical covalent bonds are broken during state changes of simple molecular substances like nitrogen oxides, instead of weak intermolecular forces.
- Confusing the distinct structural functions of xylem (support and unidirectional transport) and phloem (multidirectional sugar transport).
失分原因
- Inability to specify 'short diffusion pathway' as the physical adaptation explanation for thin capillary walls.
- Failure to write out balanced molecular chemical equations with correct stoichiometry, such as 2NO + O2 -> 2NO2.
等级分数线估算
更新: 2026年6月13日
| 等级 | 分数 | 百分比 |
|---|---|---|
| A* | 150/200 | 75% |
| A | 126/200 | 63% |
| B | 102/200 | 51% |
| C | 79/200 | 40% |
| D | 68/200 | 34% |
| E | 57/200 | 29% |
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).
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