Cambridge IGCSE · 分析与预测

2024 Cambridge IGCSE Chemistry (0620) 历年真题分析与预测

A comprehensive examiner-led analysis of the October/November 2024 Cambridge IGCSE Chemistry (0620) examination papers. This breakdown covers core and extended papers, highlighting top chapters, common traps, and preparation recommendations.

更新: 2026年6月13日

分析模拟试题
难度 3.5/5
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

  • Omitting state symbols or providing incorrect state symbols for insoluble bases like copper(II) oxide ( CuO(s) ) vs soluble reactants.
  • Failing to show all bonds when drawing organic molecules, especially forgetting the lines representing single bonds inside functional groups (like O-H or N-H).
  • Using lead pencil to mark baseline in chromatography but writing names with ink, which contaminates the solvent system.

常见误区

  • Assuming that adding a catalyst shifts the position of equilibrium or increases the final yield of products instead of just accelerating both reactions.
  • Believing that inert electrodes like carbon/graphite chemically participate in the oxidation/reduction processes.
  • Confusing 'homologous series' characteristics with those of 'isomers', particularly regarding molecular mass and physical properties.

失分原因

  • Not rounding relative atomic mass values or volumes to the precise decimal places indicated by the prompt (e.g., thallium RAM to one decimal place).
  • Leaving out ion charges on either the cation (Mg2+) or anion (O2-) in ionic dot-and-cross diagrams.
  • Confusing the distinct colors of specific indicators (methyl orange, thymolphthalein) in acidic vs basic conditions.

等级分数线估算

更新: 2026年6月13日

来源: Cambridge IGCSE grade thresholds (official)
等级分数百分比
A*158/20079%
A133/20067%
B108/20054%
C84/20042%
D71/20036%
E59/20030%
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).

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