Cambridge IGCSE · 分析與預測
2023 Cambridge IGCSE Sciences - Co-ordinated (Double) (0654) Past Paper 分析與預測
This examination paper covers Core and Extended Co-ordinated Sciences across Biology, Chemistry, and Physics, featuring structured theoretical questions, multiple-choice items, and experimental planning tasks.
更新: 2026年6月13日
難度 3.5/5
總分
220
時間
255 分鐘
最高頻課題
—
分卷
卷二 選擇題 (Extended): 40 分 · 45 分鐘Paper 4 Theory (Extended): 120 分 · 120 分鐘Paper 6 Alternative to Practical: 60 分 · 90 分鐘
考官重點
官方報告整理常見失分位
- Failing to convert units (such as grams to kilograms, or minutes to seconds) in multi-step physics and chemistry formulas.
- Describing graph features in detail when the question specifically asks candidates to explain them biologically.
- Omitting key terms in rate of reaction questions, such as writing 'more collisions' rather than 'more frequent collisions'.
常見誤解
- Assuming that light intensity changes the speed of current inside a light-dependent resistor (LDR) rather than the overall resistance of the component.
- Confusing the site of vasodilation/vasoconstriction as capillaries rather than arterioles within skin structure.
- Believing that a parallel resistor combination increases total resistance rather than reducing it.
失分原因
- Failing to balance ionic half-equations for processes like aluminium extraction or copper electrolysis.
- Neglecting to show complete working steps in multi-step stoichiometry calculations, missing out on crucial error-carried-forward (ecf) marks.
- Stating incorrect units or omitting units entirely for calculations like gravitational field strength and charge.
等級 cut-off 估算
更新: 2026年6月13日
| 等級 | 分數 | 百分比 |
|---|---|---|
| A* | 170/240 | 71% |
| A | 141/240 | 59% |
| B | 112/240 | 47% |
| C | 84/240 | 35% |
| D | 72/240 | 30% |
| E | 60/240 | 25% |
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).
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