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{"anchorId": "ca_BXwRDXAt", "prerequisiteId": "ca_8hPuC52W", "strength": "hard", "reason": "不先理解电离、离子反应等概念，就无法用化学用语表示离子反应与平衡", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 16，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "写离子方程式时，把弱电解质（如CH₃COOH）拆成离子形式，或把强电解质（如BaSO₄）拆成离子形式。", "inInferenceGraph": true, "retagHash": "ecb62fb2732d7cbc"}
{"anchorId": "ca_BXwRDXAt", "prerequisiteId": "ca_gzXQNpBF", "strength": "hard", "reason": "不先掌握电离方程式的书写，就无法正确表示水溶液中的离子反应", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 17，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "写离子方程式时，把强电解质拆成分子式，如把NaCl写成NaCl而不是Na⁺和Cl⁻", "inInferenceGraph": true, "retagHash": "a8386dc81eeee042"}
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{"anchorId": "ca_CsieinaY", "prerequisiteId": "ca_gzXQNpBF", "strength": "hard", "reason": "不先会用电离方程式表示电离，就无法分析水溶液中的离子平衡。", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 17，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "他不会写电离方程式，所以在证明离子平衡的实验报告中，无法写出HAc ⇌ H⁺ + Ac⁻来解释滴定终点附近的pH变化，只能照抄书上结论。", "inInferenceGraph": true, "retagHash": "9d9f141bdf59485f"}
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{"anchorId": "ca_iVqGzqkG", "prerequisiteId": "ca_JmcMFc5K", "strength": "hard", "reason": "不先能辨识物质性质和实验现象，就无法选择实例说明pH调控的作用", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 19，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 semantic"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "semantic", "failureSignature": "他无法说出任何一种物质的pH值，只能反复写'酸性'或'碱性'，举不出具体例子。", "inInferenceGraph": true, "retagHash": "164b82b2828db369"}
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{"anchorId": "ca_j9gAgfEt", "prerequisiteId": "ca_8hPuC52W", "strength": "hard", "reason": "不先掌握离子反应概念就无法综合运用离子反应原理", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 16，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "在写离子方程式时，他无法判断哪些离子可以约掉，导致把所有离子都写在方程式两边，或者把弱电解质拆成了离子。", "inInferenceGraph": true, "retagHash": "3b06c1d30ceceaf6"}
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{"anchorId": "ca_qzPxxwgc", "prerequisiteId": "ca_gzXQNpBF", "strength": "soft", "reason": "不先会用电离方程式表示酸、碱、盐的电离，就无法理解电解质溶液中的离子行为。", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 17，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 instrument"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "instrument", "failureSignature": "看到\"电解质溶液\"题目时，他会在\"离子\"二字处卡住，反复翻书找定义，却画不出NaCl变成Na⁺和Cl⁻的箭头。", "inInferenceGraph": true, "retagHash": "aea598aad721bf3a"}
{"anchorId": "ca_qzPxxwgc", "prerequisiteId": "ca_rSWk7cMW", "strength": "soft", "reason": "不先会用离子方程式表示典型物质的主要化学性质，就无法准确分析电解质溶液中的反应。", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 20，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "他不会写H⁺+OH⁻=H₂O，直接用离子符号表示反应，写出Cu+H⁺=Cu²⁺+H₂，被扣步骤分。", "inInferenceGraph": true, "retagHash": "fab8a5efbb178d58"}
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{"anchorId": "ca_ckjkrfRK", "prerequisiteId": "ca_FN2vtkjA", "strength": "hard", "reason": "不先会画原子结构示意图，就无法进一步学习更复杂的电子排布式", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 35，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "写电子排布式时，把21号元素钪的电子直接写成2,8,8,3，跳过了3d轨道，因为不知道第三层最多能排18个电子。", "inInferenceGraph": true, "retagHash": "65ef3e37ed022404"}
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{"anchorId": "ca_UUdbyQzs", "prerequisiteId": "ca_zzaqCkvO", "strength": "soft", "reason": "只有知道物质由元素组成，才能判断反应前后元素种类是否一致", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 16，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 component"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "component", "failureSignature": "他会在判断元素种类时，只看化学式中的字母，比如认为 H₂O 和 H₂O₂ 中的元素种类不同，因为后者多了一个 O。", "inInferenceGraph": true, "retagHash": "a9d79ddb2b3224aa"}
{"anchorId": "ca_UUdbyQzs", "prerequisiteId": "ca_DXMGpylO", "strength": "soft", "reason": "化学反应中元素种类不变是判断的核心依据和直接前提", "crossDiscipline": null, "evidence": [{"kind": "llm", "detail": "候选池 40 选 17，模型提议未复核；本轮已两段式重标"}, {"kind": "llm", "detail": "两段式重标：先写失败表现（不告知有分类任务），再独立调用分类为 semantic"}], "reviewStatus": "llm-proposed", "reviewedBy": [], "schemaVersion": "0.1.0", "type": "semantic", "failureSignature": "面对反应前后各物质的化学式，学生无法将符号（如 H₂O）与具体元素（如氢、氧）对应起来，因此只能写出方程式却说不出包含哪些元素，更无法进行比较。", "inInferenceGraph": true, "retagHash": "0bbc8cfea23e07b9", "strengthCappedBy": "matrix-track"}