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1、2019 年深圳市中考化学试卷分析试卷点评今年的化学试卷与往年相比，难度有所增加，但整体难度与往年相比变化不大，在命题方面加重了综合能力的考查。选择题方面，常规题型与往年相似，化学用语、元素信息、反应微观示意图、化学式计算、溶解度曲线与生活常识的考查基本沿用了往年固定的出题思路和考点。反应原理方面除了常规的现象和性质考查外，首次出现了框图型反应关系理解，这种题型未来有可能会演变为框图型推断。推断题今年考查了工业流程的理解，但是流程图比较容易理解，属于课本中学过的知识，下面的问题设置与往年的框图型推断问题设置相似，并没有重点考查流程的理解，所以整体难度比较小，不易失分。实验题今年第二次出现了探究
2、实验，并首次出现了定量探究问题，这里可以算是今年化学中考的难点，需要学生对质量守恒定律有较深刻的认识并会灵活运动。计算题考查形式与往年类似，依然考查了综合知识，在对数据的理解方面，采用了图象形式，但是数据不多，比较容易分析和作答。文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5
3、HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8
4、M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6
5、 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J1
6、0X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q
7、3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:
8、CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N
9、5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q32019 年深圳市中考化学试卷一、选择题（共 10 小题，每小题 1.5 分，共 15 分。在每小题给出的 4 个选项中，只有一项符合题意。）1化学与人类的生产、生活密切相关。下列描述正确的是（）A引起贫血的主要原因是缺锌B不合理施用化肥会造成水体污染C是电池回收标志D用水喷淋燃着的酒精以降低着火点2下列化学用语表述正确的是（）A硫酸钾的化学式：K2SO4 B1 个氯分子：Cl+2 C2 个硝酸根：2NO2 D铜离子：Cu 3下列实验不涉及化学变化的是（）A测定空气中B验证浓 H2SO4的腐C比较合金与纯金属D判断溶液的酸碱性O2的
10、含量蚀性的硬度4钪（Kc）是一种“工业的维生素”。下图为钪在元素周期表中的相关信息及其原子的结构示意图。下列说法正确的是（）A钪属于非金属元素B钪的相对原子质量是 21 C原子结构示意图中X=10 D钪原子核外有四个电子层5科学家研制出一种新型催化剂，可用于去除装修残留的甲醛（化学式为CH2O），该反应过程的微观示意图如下。下列说法正确的是（）A物质甲为甲醛，其分子由碳原子和水分子构成B物质乙中氧元素的化合价为-2 价C该反应前后原子种类和数目均发生改变D该反应消耗物质甲和生成物质丁的质量比为 53 6CuO 粉末与 H2在加热条件下会发生反应。下列说法错误的是（）A反应所需 H2可由 Cu
11、与稀 H2SO4反应制得B反应过程可观察到固体粉末由黑色变成红色C发生的反应为 CuO+H2 Cu+H2O D该反应说明 H2具有还原性文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G
12、8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A
13、6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J
14、10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4
15、Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码
16、:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3
17、N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q37异烟肼（化学式：C6H7N3O
18、；相对分子质量：137）是治疗肺结核药物的有效成分。下列说法正确的是（）A异烟肼属于氧化物B异烟肼分子中 H、O 原子个数比为 71 C异烟肼中 C、H 两种元素的质量比为 367 D异烟肼中 N 元素质量分数的计算式为14100%137 8为达到以下实验目的，下列相应实验方案合理的是（）选项实验目的实验方案A 获得廉价的新能源电解水制 H2 B 将河水净化为纯水经沉淀、过滤、吸附C 验证金属活动性 ZnCu 利用 Zn 片与 CuSO4溶液的反应D 除去 NaCl 固体中少量的 MgCl2 加水溶解，再加入过量 NaOH 溶液9现有 t2时的溶液 I、II 各 100g，溶液 I 中含物质甲
19、 50g，溶液II 是物质乙的饱和溶液。物质甲、乙（均不含结晶水）的溶解度曲线如图所示。下列说法正确的是（）At2时，溶液 I 是甲的饱和溶液Bt2时，溶液 I 中甲的质量分数为50%Ct2时，溶液 II 中含乙 37g D从 t2降温至 t1时，乙不会从溶液 II 中析出10关系图中“”两端的物质能发生化学反应，“”表示物质的转化方向。下列说法错误的是（）A反应 放出热量B反应 所得溶液可呈中性C反应 可得 NaOH D不能将图中稀盐酸换为稀 H2SO4 二、非选择题（共 3 题，共 25 分）11（8 分）生铁用途十分广泛。工业上利用赤铁矿（主要成分是 Fe2O3，还含少量 SiO2等杂质
20、）冶炼生铁的过程如下：回答下列问题：（1）生铁属于 _材料（填“合成”或“金属”）。“高炉气体”中的 _（填化学式）会导致酸雨。文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V
21、1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF
22、6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9
23、V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档
24、编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8
25、E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8
26、E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3（2）“煅烧”时：生成 CO 的反应之一
27、为 C+CO2高温 2CO，该反应属于 _反应（填基本反应类型）。用化学方程式表示利用 CO 炼铁的原理 _。CaCO3和 SiO2固体在高温条件下发生反应，生成 CO2气体和 CaSiO3，该反应的化学方程式为_。（3）生活中铁制品锈蚀的过程，实际上是 Fe 与空气中 _、_等发生化学反应的过程。下列措施能防止铁制品锈蚀的是_（填标号）。A涂油、喷漆B镀耐腐蚀的铬层C用盐水清洗D久置于酸性环境12（8 分）为探究某塑料的组成元素，设计了实验 I 和 II。回答下列问题：I制取氧气（1）若用一种暗紫色固体制取 O2，发生反应的化学方程式为_，发生装置应选择上述装置_（填标号）。（2）欲制取干燥
28、的 O2，装置合理的连接顺序为：发生装置C_（填标号）。连接装置时，发生装置的出气口应与装置 C 中_（填“a”或“b”）端相连。II组成探究（3）定性检测（已知：无水 CuSO4遇水变蓝色）实验操作实验现象结论连接装置，检查气密性，装入试装置 K 中无水 CuSO4变塑料燃烧产物中有 H2O _色剂并按上图进行实验。通入 O2，装置 L 中_ 一段时间后，点燃 J 处酒精灯。塑料燃烧产物中有 CO2 _ 由上述实验可知，该塑料一定含有的元素是_（填元素符号）。（4）定量测定为进一步确定组成，将1.4g 该塑料在足量O2中完全燃烧，共产生了4.4g CO2和 1.8g H2O，依据质量守恒定律
29、，可判断该塑料_（填“含有”或“不含”）除上述 中结论之外的元素。文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E
30、5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10
31、G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1
32、A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6
33、J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V
34、4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编
35、码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q313（9 分）已知：NaHCO3固体受热分解 2NaHCO3 Na2CO3+CO2+H2O；Na2CO
36、3受热不分解。回答下列问题：（1）关于 NaHCO3固体的叙述错误的是_（填标号）。A俗称小苏打B难溶于水C可与稀盐酸发生反应D是发酵粉的主要成分之一（2）欲测定某NaHCO3固体样品（只含Na2CO3杂质且分布均匀）中NaHCO3的质量分数，将5.0g 该样品加热至质量不再改变，测得剩余固体的质量、生成CO2的质量随时间变化如图所示。NaOH 溶液的 pH_7（填“”、“=”或“”），用该溶液将生成的 CO2完全吸收，发生反应的化学方程式为_。由图中数据可知，上述 5.0g NaHCO3样品完全分解产生CO2的质量为 _ g，产生 H2O 的质量是 _ g。计算该样品中 NaHCO3的质量分
37、数（根据化学方程式写出完整的计算步骤）。文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A
38、6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J
39、10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4
40、Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码
41、:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3
42、N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5
43、 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q32019 年深圳市中考化学试卷解析1【答案】B【考点】化学与生活【解析】B 选项中引起贫血的主要原因是缺铁；C 选项中的标志为塑
44、料回收标志；D 选项中不可用水扑灭酒精着火且着火点为固定属性，不可降低。2【答案】A【考点】化学语言【解析】B 选项应为 Cl2；C 选项应为 2NO3；D 选项应为 Cu2+。3【答案】C【考点】物质的变化与性质【解析】C 选项中没有新物质生成，属于物理变化；A、B、D 三个选项中均有新物质生成，属于化学变化。4【答案】D【考点】元素信息与原子结构【解析】A 选项中钪属于金属元素；B 选项钪的相对原子质量是 44.96；C 选项中X=8。5【答案】D【考点】反应微观示意图【解析】A 选项中甲醛分子由碳原子、氢原子和氧原子构成；B 选项中氧元素的化合价为0 价；C 选项中反应前后原子的种类和数
45、目均未发生改变。6【答案】A【考点】反应原理与现象【解析】A 选项中 Cu 与稀 H2SO4不发生反应。7【答案】B【考点】化学式及其计算【解析】A 选项中异烟肼中有四种元素，不属于氧化物；C 选项异烟肼中 C、H 两种元素的质量比为 727；D 选项异烟肼中 N 元素质量分数的计算式为143100%。137 8【答案】C【考点】综合考查【解析】A 选项中用电并不廉价；B 选项中还要进行蒸馏才能得到纯水；D 选项中需加入适量 NaOH 溶液。9【答案】B【考点】溶解度曲线【解析】A 选项中溶液 I 是甲的不饱和溶液；C 选项中溶液 II 中含乙的量大于 37g；D 选项中乙会从溶液 II 中析
46、出。10【答案】D【考点】反应原理【解析】D 选项中稀盐酸可以换为稀 H2SO4。文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ
47、8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G
48、8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE
49、10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1
50、V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 ZF6J10X9V4Q3文档编码:CZ8E3N5G8E5 HE10G8M1V1A6 Z