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>高凤君 | 2026年河南省中考化学试卷考点分析
高凤君 | 2026年河南省中考化学试卷考点分析
2026-07-13 03:34:09
高凤君 | 2026年河南省中考化学试卷考点分析
2026年河南省中考化学
试卷考点分析
一、选择题
1. 化学与环保、绿色化学措施判断
2. 化学史考查
3. 危险化学品安全警示标识识别
4. 物理变化与化学变化区分(河南非遗工艺)
5. 分子的性质(热胀冷缩微观解释)
6. 材料分类:合成材料、金属材料、天然材料、无机非金属材料
7. 物质构成微粒:分子/原子/离子区分
8. 元素周期表单元格信息(相对原子质量概念辨析)
9. 根据化学式计算元素化合价
10. 物质性质与用途对应关系正误判断
11. 粗盐提纯基础实验操作规范判断
12. 化学式意义、元素质量分数、相对分子质量、元素质量比计算
13. 物质鉴别方法正误判断(纤维、气体、固体、溶解吸放热)
14. 金属与酸反应定量计算(等质量金属产氢质量比)
二、填空题
15. 空气成分、纯净物与混合物判断(航天情境)
16. 六大营养素、人体常量/微量元素区分
17. 溶解度曲线应用;饱和溶液溶质质量分数计算;溶液稀释计算
18. 微观反应示意图;氧化物判断;化学反应质量比计算
19. 碳酸氢钠受热分解、碳酸盐与酸反应;混合物定量成分推断(酸碱盐定量计算压轴)
20. 物质推断(碱、盐转化,工业制烧碱,CaO相关转化);化学方程式书写;四大基本反应类型判断
三、简答题
21. 乙醇燃烧化学方程式书写;促进燃料充分燃烧的原理
22. 电解水方程式;氢气燃烧实验现象(水的组成探究)
23. 气体制取方程式;气体制取仪器选择;实验装置纠错(O₂、CO₂制备)
24. 中和反应pH、温度曲线及溶质分析;中和反应验证实验设计
四、综合应用题
(1) 金属物理性质与用途
(2) 金属活动性顺序判断、置换反应方程式
(3) 铁生锈条件探究
控制变量
实验分析;盐对锈蚀速率影响
(4) 废旧金属回收意义;氢气还原氧化铁化学定量计算
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CONNECT:[ UseTime:0.000660s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000892s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000346s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000284s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.000479s ]
SELECT * FROM `set` [ RunTime:0.000202s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.000599s ]
SELECT * FROM `article` WHERE `id` = 507098 LIMIT 1 [ RunTime:0.000434s ]
UPDATE `article` SET `lasttime` = 1784055442 WHERE `id` = 507098 [ RunTime:0.014623s ]
SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000418s ]
SELECT * FROM `article` WHERE `id` < 507098 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000613s ]
SELECT * FROM `article` WHERE `id` > 507098 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000470s ]
SELECT * FROM `article` WHERE `id` < 507098 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000970s ]
SELECT * FROM `article` WHERE `id` < 507098 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001186s ]
SELECT * FROM `article` WHERE `id` < 507098 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000692s ]
0.094971s