广东省佛山市2020届高三教学质量检测(二模)理科综合化学试题Word版含答案
2019～ 2020 学年佛山市普通高中高三教学质量检测(二) 高三理科综合试题化学部分 2020年5月 可能用到的相对原子质量: H-1 C-12 N-14 O-16 Na-23 Mg-24 S-32 C1-35.5 7.科学防护对预防病毒感染非常重要，下列说法错误的是 A. 冠状病毒粒子直径约60-220 nm, 介于溶液和胶体粒子之间 B. 制作防护服和口罩的无纺布是有机高分子材料 C.免洗手消毒液的成分活性银离子、乙醇均能使蛋白质变性 D.二氧化氯泡腾片可用于水处理 8化合物c的刺备原理如下
下列说法正确的是 A.该反应为加成反应 B.化合物a中所有原子一定共平面 C.化合物C的一氯代物种类为5种 D.化合物b、c均能与NaOH溶液反应 9.我国科学家提出用CO2置换可燃冰(mCH4·nH2O) 中CH4的设想，置换过程如图所示，下列说法正确的是
A. E代表CO2, F代表CH4 B.笼状结构中水分子间主要靠氢键结合 C. CO2置换出CH4的过程是化学变化 D. CO2可置换可燃冰中所有的CH4分子 10.双极电化学法(装置如图)是在传统电解装置中放置了导电性电极BPE， 通电时，BPE两端界面产生电势差，生成梯度合金。下列有 关说法错误的是 A. m为电源负极 B.BPE的b端比a端的电势高 C. BPE的a端发生的反应为: 2H2O+2e-=H2↑+2OH- D. BPE的b端到中心的不同位置，能形成组成不同的铜镍合命 11.利用乙醚、95%乙醇浸泡杜仲干叶，得到提取液，进步获得绿原酸粗产 品的种工艺流程 如下，下列说法错误的是
A.常温下，绿原酸易溶于水 B.浸膏的主要成分是绿原酸 C.减压蒸馏的目的是降低蒸馏温度，以免绿原酸变质 D.绿原酸粗产品可以通过重结晶进一步提纯 12.“医用酒精”和“84消毒液”混合，产生ZQ、X2W4Y、XW3Q等多种物质，已知W、X、Y、
Z、Q为原子序数依次增大的短周期主族元素。下列叙述错误的是 A.简单气态氢化物热稳定性: Y>X B. W与Z可形成离子化合物ZW C.简单离子半径: Q->Y2->Z+ D.常温下，XW3Q为气态，且X、W、Q均满足8电子稳定结构 13.向废水中加入硫化物可以依次获得CuS、 ZnS纳米粒子。常温下，H2S的Ka1=1.3×10-7, Ka2=7.1×10-15，溶液中平衡时相关离子浓度的关系如图，下列说法错误的是
A. Ksp(CuS)的数量级为10-37 B. a点对应的CuS溶液为不饱和溶液 C.向p点的溶液中加入少量NaS固体，溶液组成由p向q方向移动 D. H2S+Zn2+ƒZnS + 2H+平衡常數很大，反应趋于完全 26. (14分) DCCNa (二氯异氰尿酸钠)固体是一种高效、 安全的消毒剂。20°C以上易溶于水。(CNO)3H3 (氰尿酸)为三元弱酸。 I.制备DCCA (二氯异氰尿酸)装置如图。主要反应有: 碱溶 (CNO)3H3+ 2NaOH==(CNO)3Na2H + 2H2O △H<0 氯化 (CNO)3Na2H +2Cl2==(CNO)3Cl2H + 2NaCl ∆ H<0
回答下列问题: (1)装置C中的溶液是______________，作用为______________。 (2)装置A中反应的离子方程式为____________________________________。 (3)装置B用冰水浴的原因是__________, 碱溶时若氢氧化钠过量，(CNO)3Na2H中可 能混有的杂质是______________。 I.. 制备DCCNa
(4)步骤II中过滤洗盐”洗去的盐是__________________。 (5)“中和”反应的化学方程式为____________________________________。 (6)氧元素含量的测定:称取0. 1000 g DCNa样品，加入一定量醋酸溶液溶解，样品中的氯元素全邵转化成HClO,再加入足量的KI溶液，用淀粉作指示剂， 用01000 mol·L-1Na2S2O3
标准溶液滴定生成的碘，消耗VmL.已知: I2+2S2O32-==2I- +S4O62- ,样品中氯元素的质量分数=
__________% 27. (15 分) CoS2 催化CO烟气脱硫具有广阔的工业化前景。回答下列问题: (1)已知: CoS2(s) +CO(g) ƒCoS(s) +COS(g) ∆H1 2COS(g) +SO2(g) ƒ3S(s) +2CO2(g) ∆H2 S(s) +CoS(S) ƒCoS2 (s) △H3
则2CO(g)+ SO2(g) ƒ催化剂2CO2(g)+S(s) ∆H4=____。 (用∆H1、 ∆H2、∆H3表示) (2)在恒温、恒压的容器中模拟回收硫，加入SO2起始量均为1mol,测得CO2的平衡体积分数 随CO和SO2的投料比变化如图1: ①当投料比为2时，t min 时测得SO2转化率为50%，则用S的生成速率表示的反应速率 v=______g·min-1。 ②当投料比为3时，CO2 的平衡体积分数对应的点是______________。
(3)向体积均为IL的恒温、恒客密团容器通入2 mol CO和| mol SO2.反应体系总压强随时间 的变化如图2。 ①相对于I，II改变的外界条件是____________________。 ②SO2的平衡转化率为______，平衡常数Kp =________(用平衡分压代替平衡浓度计算)。 (4) 利用电解法处理SO2尾气可制备保险粉 (Na2S2O4).电解装置如图3.则a____ b (填 “>” “=”或“<”)，生成S2O42-
的电极反应式为____________________。
28. (14分) Na5PW11O39Cu/T1O2膜可催化污染物的光降解，一种生产工艺流程如下， 回答下列问题:
(1)“溶解I”发生的离子反应方程式为______________，Na2WO4 (钨酸钠)在酸性条件下有较强的氧化性，该步骤不能用浓盐酸代替浓硝酸的原因是_____________________。 (2)“除杂”时用过量有机溶剂萃取溶液中的NO3-
，再通过_________方法分离杂质。
(3)“溶解II”需要加入水、乙醇和稀硫酸。 ①加入乙醇的目的是______________________________。 ②钛酸四丁酯水解产生TiO2和C4H9OH的化学方程式为_________________________。 ③溶液中Cu2+浓度为0.02 mol·L-1，需调节pH小于________。(已知Ksp[Cu(OH)2]=2×10-20) (4)培烧温度、Na5PW11O39Cu 用量对Na5PW11O39Cu/TiO2膜催化活性的影响随(时间)变化如图1、图2所示:
制备Na5PWl1O39Cu/TiO2膜的最佳条件为:培烧温度_____，Na5PW11O39Cu用量_______。 35. [化学选修3: 物质结构与性质] (15分) 科学家预测21世纪中叶将进入“氢能经济”时代，下列物质都是具有广阔应用前景的储氢材料。回答下列问题: (1)Zr(锆)在元素周期表中位于第五周期，与钛同族，基态Zr的价层电子排布式为_______。 (2)亚氨基锂(Li2NH) 所含元素第一电离能最小的是____ ，电负性最大的是_____ 。(填元素 符号)
(3)咔唑()的沸点比芴()高的主要原因是_________________。 (4)①NH3BH3 (氨硼烷，熔点104 °C)与乙烷互为等电子体。NH3BH3的晶体类型为____。 其中B的杂化类型为____，可通过_________测定该分子的立体构型。 ②NH3BH3可通过环硼氨烷、CH4与H2O进行合成，键角: CH4______H2O (填“> "或“<")， 原因是_______________________________________。 (5) MgH2晶体属四方品系，结构如下图，晶胞参数a =b= 450pm, c= 30lpm,原子坐标为A(0，0， 0)、B(0.305， 0.305， 0)、C(1，1， 1)、D(0.195， 0.805， 0.5)。 ①Mg2+的半径为72pm,则H+的半径为______pm (列出计算表达式) ②用NA表示阿伏加德罗常数，MgH2晶体中氢的密度是标准状况下氢气密度的_____倍(列出计算表达式，氢气密度为0.089g·L-1)。 36. [化学——选修S:有机化学基础] (15分) 化合物I是合成磷酸氨喹的中间体，一种合成路线如下: 回到下列问题: (1) A中的官能团名称是______________。 (2) C的化学名称为_________________________。 (3)⑦的反应类型是_______________________________。 (4)已知③为取代反应，另一生成物为乙醇， E的结构简式为___________________。 (5)写出G到H的反应方程式_________________________________。
(6) H在一定条件下可以转化为()，请写出任意一 种同时符合下列条件M的同 分异构体_____________________。 ①含苯环且苯环上有3个取代基; ②含有NH2,能发生加聚反应: ③核磁共振氢谱图为6组峰，峰面积比为1：1：1：2：2：2
(7)设计以对羟基苄氯( )、CHCH2OH为主要原料制备()的合成路线 (无机试剂任选)。_______________________________________________________。
深圳市2020届高三第二次调研考试(二模)化学试题答案
2020年深圳二模化学参考答案及评分标准 7 8 9 10 11 12 13 AC C B BD C26．（15分）（1）Na 2O 2＋2NaH 2PO 4＝2Na 2HPO 4＋H 2O 2（2分，答“Na 2O 2＋2NaH 2PO 4＋2nH 2O ＝2Na 2HPO 4·nH 2O ＋H 2O 2”也得分。
物质正确但未配平得1分）；防止H 2O 2受热分解，沉降Na 2HPO 4·nH 2O 固体（2分，各1分）（2）圆底烧瓶（1分）（3）①B （2分）②注射器b 的活塞向右移动，且最终注射器b 中的气体体积为10 mL （2分，“向右移动”1分，“体积为10 mL ”1分）（4）②恢复室温或体积不再改变或压强不再改变（1分，答“温度不再改变”“恢复常温”“恢复25℃”“压强与外界大气压相等”等合理答案均得分）， V 2－V 1（1分） ③m V )V V (2112c ρ-（2分，若答mV V 212c ρ给1分） （5）反应完全、无污染、反应速率快等合理答案均可得分（2分，各1分）27．（14分）（1）＋247.0 kJ ·mol −1（2分，写成247.0 kJ ·mol −1或247 kJ ·mol −1也得分，数值错误不得分，数值正确但没带单位1分）（2）①AB （2分，只选1个且正确得1分，错选不得分）②5.2（2分）（3）60%（1分，写成0.6也得分）P 02或1.265625 P 02（2分，1.26P 02、1.27P 02、1.3P 02也得分）（4）①CO 2＋Co 3C ＋2H 2k f k r k fk r CH 3COOH ＋3Co （2分，物质书写错误不得分，物质正确但未配平1分，写成可逆号，等号或箭头号都给分，物质状态的标注不做要求）②低温（1分）；第一步减小氢气的浓度（或压强），第二步增大氢气的浓度（或压强）（2分，分两步答题，各1分；只填写增大压强、增大浓度或者减小压强、减小浓度不得分）28．（14分）（1）有利于Pd 与Al 2O 3的分离（1分，或“大大减少了酸用量”，或“避免酸浸时氧化铝和酸发生反应”，答案合理均得分）（2）3Pd ＋ClO -3＋6H +＋11Cl -＝3PdCl 2-4＋3H 2O （2分，反应物或产物写错不得分，物质正确但未配平得1分）（3）AlCl 3（2分）（4）对环境产生较大污染（或耗酸量大、或腐蚀性强、或氧化效率低）（2分）NaClO 3（2分）（5）[Pd(NH 3)4]Cl 2＋2HCl ＝[Pd(NH 3)2]Cl 2↓＋2NH 4Cl （2分，反应物或产物写错不得分，物质正确但未配平得1分，没有标注沉淀符号不扣分）（6）①负（1分）②H2（2分）35．【化学——选修3：物质结构与性质】（1）[Ar]3d74s2或1s22s22p63s23p63d74s2（1分）（2）①O、N（2分，各1分）；②O＞N＞C＞H（1分，有错不得分）；③B（2分）（3）BCD（2分，漏选得1分，错选不得分）；SO2或SnO2（1分）（4）Co原子半径小且价电子数多，金属键强（2分）（5）面心（1分）；12（1分）；或或或（2分，其他形式的正确答案均可得分）36．【化学——选修5：有机化学基础】（1）（1分）羧基、酯基（2分，各1分）（2）取代反应（1分）还原反应（1分）（3）cd（2分，各1分）（4）（2分，反应物或产物写错不得分，物质正确但未配平得1分）（5）13（2分）（1分）（6）（3分，每步1分，后两步顺序颠倒也可得分，其他合理答案也给分，如第一步和第二步合并成一步，用HCl发生加成反应得1，4-二氯丁烷，得2分）。
2020年高考化学原创专题卷：《物质的量》
原创化学专题卷专题 物质的量考点04：物质的量及相关物理量 1-17 19 -21考点05一定物质的量浓度溶液的配制 18 23-25综合26-29考试时间：90分钟 满分：100分说明：请将选择题正确答案填写在答题卡上，主观题写在答题纸上可能用到的相对原子质量：H-1 O-16 Na-23 Fe-56 Mg-24 S-32 Ca-40N-14 Cl-35.5第I 卷（选择题）一、选择题（本题共25小题，每小题2分，共50分。
在每小题给出的四个选项中，只有一项是最符合题目要求的。
）1. 【来源】2017年高考化学原创押题卷 考点04 易设N A 为阿伏加德罗常数的值。
下列说法正确的是( )A ．5.6 g Fe 在氧气中燃烧，完全反应时转移电子数为0.3N AB ．标准状况下，4.48 L CH 3Cl 中所含原子数为N AC ．1 L pH ＝1的H 2SO 4溶液中含有的H ＋数为0.2N AD ．常温下，1.7 g NH 3和3.65 g HCl 混合后，气体分子数为0.2N A2.【来源】重庆市南开中学2016届高三上学期期中化学试题 考点04 易设N A 为阿伏加德罗常数的值，下列说法不正确的是（ ）A ．4.6g 金属钠与足量O 2充分反应后，所得固体中阴、阳离子的总数为0.3N AB ．1L 0.5 mol/L 的FeCl 3溶液充分水解后，所得Fe （OH ）3胶粒的数目为0.5N AC ．2.0g H 218O 与D 2O 的混合物中所含中子数为N AD ．1L 含N A 个Al 3+的Al （NO 3）3液中，NO 3﹣物质的量浓度大于3 mol/L3.【来源】山东省潍坊中学2017届高三上学期第一次月考化学试题考点04 易某500ml 溶液中含0.1molFe 2+、0.2mol Fe 3+，加入0.2mol 铁粉，待Fe 3+完全被还原后，溶液中Fe 2+的物质的量浓度为(假设反应前后体积不变) （ ）A ．0.4mol/LB ．0.6 mol/LC ．0.8 mol/LD ．1.0 mol/L4.【来源】河南省鹤壁一中2017届高三上学期第一次综合能力化学试卷考点04 易如果a 克某气体中含有的分子数为b ，则c 克该气体在标准状况下的体积是（式中N A 为阿佛加德罗常数）（ ）A ．A aN bc 4.22升B ．A bN ac 4.22升C ．AcN ab 4.22升 D ．A acN b 4.22升5.【来源】山西省三区八校2017届高三上学期暑期检测化学试卷 考点04 易现有200mLNH 4HCO 3和Na 2CO 3的混合溶液，加入含a mol 氢氧化钠的溶液并加热，恰好反应完全；继续加入含bmolHCl 的盐酸恰好反应完全，则该混合溶液中c （Na +）为（ ）A ．（0.5b ﹣0.5a ）mol/LB ．（2b ﹣a ）mol/LC ．（5b ﹣2a 5）mol/L D ．（5b ﹣5a ）mol/L 6.【来源】四川省凉山州2016届高考化学三诊试卷 考点04 中难设N A 表示阿伏伽德罗常数的值，下列叙述中正确的是（ ）A ．电解精炼铜，当电路中通过的电子数为0.1N A 时，阳极质量减少3.2gB ．0.5L1mol•L ﹣1NaHS 的溶液中，Na +和HS ﹣离子数目之和为N AC ．25℃时，7gC 2H 4和C 2H 6混合气体中，含有N A 个C ﹣H 键D ．标况下，11.2L 一氯甲烷中含有的氯原子数为0.5N A7.【来源】河南省八市重点高中2016届高三第三次质量检测化学考点04 中难设N A 为阿伏加德罗常数的数值，下列说法正确的是（ ）A.42g 丙烯和环丙烷的混合气体中所含极性键的数目为9N AB.12g 石墨烯(单层石墨)中含有六元环的数目为0.5N AC.室温下，1L pH ＝13的NaOH 溶液中，由水电离出的OH －的数目为0.1N AD.3.6 g CaO 2晶体中阴离子的数目为0.1N A8.【来源】普通高等学校2016年高考化学置换卷（一）（衡水万卷）考点04中难已知：将Cl 2通人适量KOH 溶液，产物中可能有KC1、KClO 、KC1O 3，且)()(--ClO c Cl c 的值与温度高低有关，当n （KOH ）=amol 时，下列有关说法错误的是（ ）A ．若某温度下，反应后)()(--ClO c Cl c =11，则溶液中21)()(3=--ClO c ClO c B ．参加反应的氯气的物质的量等于0.5amolC ．改变温度，反应中转移电子的物质的量n e 的范围：21amol≤n e ≤65amol D ．改变温度，产物中KC1O 3的最大理论产量为71amol 9.【来源】江西崇义2016届高三下学期第三次理科综合能力测试化学试题 考点04中难一块11.0g 的铁铝合金，加入一定量的稀硫酸后合金完全溶解，然后加H 2O 2至溶液中无Fe2+存在，加热除去多余的H 2O 2，当加入200mL 6molL ﹣1NaOH 溶液时沉淀量最多，且所得沉淀质量为26.3g ，下列说法不正确的是（ ）A ．该合金中铁的质量为5.6gB ．合金与稀硫酸反应共生成0.45mol H 2C ．该合金与足量氢氧化钠反应，转移的电子数为0.6N AD ．所加的稀硫酸中含0.6molH 2SO 410.【来源】河北省廊坊市2016届高三上学期期末考试化学试题考点04 中难将一定质量的镁、铜合金加入到稀硝酸中，合金完全溶解，假设反应过程中还原产物全部是NO ，向所得溶液中加入物质的量浓度为3mol/L 的NaOH 溶液至沉淀完全，测得生成沉淀的质量比原合金的质量增加5.1g ，则下列有关叙述正确的是（ ）A ．反应中转移电子的总数为0.3molB ．反应过程中，消耗硝酸的物质的量为0.3molC ．沉淀完全时消耗NaOH 溶液的体积为100mLD ．开始加入合金的质量可能为3.4g11.【来源】贵州省黔南州2016届高三上学期期末联考理科综合化学试题考点04 中难现取mg 镁铝合金在一定量的稀硝酸中恰好完全溶解(硝酸的还原产物只有NO)，向反应后的溶液中滴加bmol/LNaOH 溶液，当滴加到VmL 时，得到沉淀质量恰好为最大值ng 。
上海市宝山区2020届高三下学期二模化学试题 Word版含答案
宝山区2019 学年第二学期期中高三年级化学学科等级考质量监测试卷考生注意：1．本试卷满分100 分，考试时间60 分钟。
2．本试卷设试卷和答题纸两部分，试卷包括试题与答题要求；所有答案必须涂或写在答题纸上；做在试卷上一律不得分。
3．答题前，考生务必在答题纸上用钢笔或圆珠笔在答题纸正面清楚地填写姓名、准考证号。
4．答题纸与试卷在试题编号上是一一对应的，答题时应特别注意，不能错位。
相对原子质量：O—16 Na—23 Cl—35.5 H—1 Fe—56 S—32 C—12一、选择题（共40 分，每小题2 分，每题只有一个正确选项）1．下列不属于合金的是A．生铁B．黄金C．硬铝D．黄铜2．某原子的轨道表示式如下, 从中得到的信息错误的是A．有2 个电子层B．有3 种能量不同的电子C．最外层有3 个电子D．有7 种运动状态不同的电子3．清洁的水对人类的生存非常重要，关于H2O 的描述正确的是A．含有非极性键和极性键B．纯水几乎不导电，属于非电解质C．带静电的玻璃棒接近，水流会发生偏转D．水分子间作用力大，所以加热很难分解4．“浓硫酸使蔗糖脱水”实验中浓硫酸没有体现出的性质是A．酸性B．吸水性C．脱水性D．强氧化性5．把少量硫酸铜固体加入饱和硫酸铜溶液中，不可能出现的是A．溶液颜色变浅B．有固体析出C．溶液浓度不变D．溶液体积减小6．已知:4Al(s)+ 3O2(g) →2Al2O3 (s)+Q kJ（Q>0）。
下列能量图与该反应所体现的能量关系匹配的是A B C D7．硝酸是一种常见的强酸，下列关于浓、稀硝酸的描述错误的是A．浓硝酸氧化性大于稀硝酸B．浓硝酸导电性小于稀硝酸C．浓硝酸能使铝、铁钝化，稀硝酸不能D．与铜反应的氧化产物两者相同8．下列有关金属腐蚀的说法正确的是A．金属腐蚀指不纯金属与接触到的电解质溶液进行化学反应而损耗的过程B．电化学腐蚀指在外加电流的作用下，不纯金属发生化学反应而损耗的过程C．金属的电化学腐蚀和化学腐蚀本质相同，但电化学腐蚀伴有电流产生D．钢铁腐蚀最普遍的是吸氧腐蚀，负极吸收氧气，产物最终转化为铁锈9．卤素单质及其化合物在许多性质上都存在着递变规律，下列有关说法正确的是A．卤化银的颜色按AgCl、AgBr、AgI 的顺序依次变浅B．卤化氢的键长按H-F、H-C1、H-Br、H-I 的顺序依次增大C．卤化氢的还原性按HF、HCl、HBr、HI 的顺序依次减弱D．卤素单质与氢气化合按F2、Cl2、Br2、I2 的顺序由难变易10．84消毒液（主要成分NaClO）能用于杀菌消毒，生活中往往稀释之后使用，其反应原理如下：NaClO+CO2+H2O→HClO+NaHCO3。
高中化学专题05 元素及其化合物-2020年高考化学真题与模拟题分类训练(学生版)
专题05 元素及其化合物1．【2020新课标Ⅰ】下列气体去除杂质的方法中，不能实现目的的是2．【2020新课标Ⅱ】北宋沈括《梦溪笔谈》中记载：“信州铅山有苦泉，流以为涧。
挹其水熬之则成胆矾，烹胆矾则成铜。
熬胆矾铁釜，久之亦化为铜”。
下列有关叙述错误的是A．胆矾的化学式为CuSO4B．胆矾可作为湿法冶铜的原料C．“熬之则成胆矾”是浓缩结晶过程D．“熬胆矾铁釜，久之亦化为铜”是发生了置换反应3．【2020天津】在全国人民众志成城抗击新冠病毒期间，使用的“84消毒液”的主要有效成分是A．NaOH B．NaCl C．NaClO D．Na2CO34．【2020江苏】下列有关化学反应的叙述正确的是A．室温下，Na在空气中反应生成Na2O2B．室温下，Al与4.0 mol﹒L-1NaOH溶液反应生成NaAlO2C．室温下，Cu与浓HNO3反应放出NO气体D．室温下，Fe与浓H2SO4反应生成FeSO45．【2020江苏】下列有关物质的性质与用途具有对应关系的是A．铝的金属活泼性强，可用于制作铝金属制品B．氧化铝熔点高，可用作电解冶炼铝的原料C．氢氧化铝受热分解，可用于中和过多的胃酸D．明矾溶于水并水解形成胶体，可用于净水6．【2020江苏】下列选项所示的物质间转化均能实现的是 A ．NaCl (aq)2Cl →电解(g)→石灰水漂白粉(s)B ．NaCl (aq)()2CO 3gNaHCO −−−→(s)23Na CO →加热(s)C ．NaBr (aq)()2Cl 2gBr −−−→(aq)()Nal 2aqI −−−→(aq)D ．2Mg(OH )(s)()HCl aq −−−→2MgCl (aq)Mg →电解(s) 7．【2020年7月浙江选考】下列说法不正确．．．的是( ) A ．Cl −会破坏铝表面的氧化膜 B ．NaHCO 3的热稳定性比Na 2CO 3强C ．KMnO 4具有氧化性，其稀溶液可用于消毒D ．钢铁在潮湿空气中生锈主要是发生了电化学腐蚀 8．【2020年7月浙江选考】下列说法不正确．．．的是( ) A ．高压钠灯可用于道路照明 B ．SiO 2可用来制造光导纤维C ．工业上可采用高温冶炼黄铜矿的方法获得粗铜D ．BaCO 3不溶于水，可用作医疗上检查肠胃的钡餐 9．【2020年7月浙江选考】下列说法正确的是( ) A ．Na 2O 在空气中加热可得固体Na 2O 2 B ．Mg 加入到过量FeCl 3溶液中可得Fe C ．FeS 2在沸腾炉中与O 2反应主要生成SO 3 D ．H 2O 2溶液中加入少量MnO 2粉末生成H 2和O 210．【2020年7月浙江选考】Ca 3SiO 5是硅酸盐水泥的重要成分之一，其相关性质的说法不正确．．．的是( ) A ．可发生反应：Ca 3SiO 5+4NH 4Cl Δ 3+2CaCl 2+4NH 3↑+2H 2OB ．具有吸水性，需要密封保存C ．能与SO 2，反应生成新盐D ．与足量盐酸作用，所得固体产物主要为SiO 211．(2020届广东省深圳市高三第一次调研)铜与浓硫酸反应的装置如图所示。
【珠海二模】广东省珠海市2014届高三学业质量检测化学试卷 Word版含答案
试卷类型：A珠海市2014届高三下学期学业质量监测（二模）理科综合 化学试题本试卷共12页，36小题，满分300分。
考试用时150分钟。
7．下列与有机物的结构、性质有关的叙述正确的是 A ．苯、油脂均不能使酸性KMnO 4溶液褪色B. 聚酯纤维、有机玻璃、光导纤维都属于有机高分子材料 C ．乙醇可以被氧化为乙酸，二者都能发生取代反应 D ．淀粉和蛋白质均可作为生产葡萄糖的原料 8．常温时，下列各组离子能大量共存的是 A ．--++23SNO K Ag 、、、 B ．--++32443NO SO NH Fe 、、、C ．--++ClO Cl Na Fe 、、、2 D ．---+224AlO SO Cl H 、、、 9.下列有关物质的性质或应用正确的是 A ．单质硅用于制造芯片和光导纤维B ．浓硫酸能干燥SO 2、NO 2等气体，说明浓硫酸具有吸水性C ．SO 2 具有漂白性，通入紫色石蕊溶液中能使溶液先变红后褪色D ．30%的H 2O 2溶液中加入MnO 2可制得O 2，MnO 2做氧化剂10. 设N A 为阿伏加德罗常数的数值，下列说法正确的是（相对原子质量：N-14 O-16） A ．23gNO 2和N 2O 4的混合气体中含有的氮原子数为0.5N A B ．标准状况下，2.24 L 乙醇中含有的C —H 数目为0.5N A C ．1 mol·L -1的NaClO 溶液中所含ClO －的数目为N AD ．室温下H 2O 2分解得到16 g O 2，转移的电子数为2N A 11.下列叙述中正确的是A ．二氧化氯具有还原性，可用于自来水的杀菌消毒B ．碳酸钠溶液呈碱性，医疗上常用碳酸钠治疗胃酸过多C ．向纯水中加入盐酸或降温都能使水的离子积减小，电离平衡逆向移动D ．锅炉中沉积的CaSO 4可用Na 2CO 3溶液浸泡后，再将不溶物用稀盐酸溶解去除12．短周期元素X 、Y 、Z 、W 在元素周期表中的相对位置如图所示，其中Z 为地壳中含量最高的金属元素。
上海市嘉定区2020届高三下学期第二次质量调研测试(二模)英语试题+Word版含答案
2020上海嘉定区高三英语二模试卷I. Listening ComprehensionSection ADirections: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard.1.A. Customer and salesperson.B. Teacher and student.D. Guest and waitress.C. Boss and secretary.2. A. The program was not interesting enough.B. She didn't want to listen to the program.C. She had to meet her students.D. The students' questions kept her busy.3. A. Help the man with his essay.B. Memorize her lines by herself.C. Wait until the man finishes his essay.D. Ask Sue to help her.D. Shopping for running shoes4. A. Practice her presentation in front of him.B. Find out who her audience will be.C. Try not to think about her audience.5. A. Writing a term paper.B. Studying for a history test.C. Reading a magazine.D. Watch him make his presentation.6. A. He doesn't like the way Americans speak.B. He speaks English as if he were a native speaker.C. He doesn't mind speaking English with an accent.D. His English is still poor after ten years in America.7. A. The box office is closed today.B. The tickets have been sold out.C. He doesn't want to go to the concert.D. It's too late to buy the morning paper.8. A. He received a good evaluation.B. He enjoyed a wonderful performance.C. He's getting along well with his supervisor.D. He gave a good performance in the evaluation.9. A. The library is closed on weekends.B. He had no idea where the book was.C. He wasn't allowed to check out the book.D. He didn't get the book he needed.10. A. He can't hear Tom clearly.B. Tom's speech is too deep.C. Tom doesn't speak directly.D. Tom doesn't talk about the proposal.Section BDirections: In Section B, you will hear two short passages and one longer conversation, and you will be asked several questions on each of the passages and the conversation. The passages and the conversation will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions 11 through 13 are based on the following passage.11. A. He wrote the Superman stories.B. He was the best American journalistC. He was the boss of many newspapers.D. He won prizes for press photography.12. A. It stood up for the common people.B. It made public the wrongdoing of officials.C. It established a famous prize for journalism.英语学习讲义D. It probably provided a model for the Daily Planet13. A. Model newspaper.B. Excellence in journalism.D. Best school of journalism in America.C. Impressive public opinions.Questions 14 through 16 are based on the following passage.14. A. The fondness for the Ambassador.B. The long history of the Ambassador.C. The brilliant functions of the Ambassador.D. The stop of the production of the Ambassador.15. A. Low demand and lack of money.B. High price and strong competition.C. Lack of buyers and poor economy.D. Few changes and less competitiveness.16. A. Because the car can operate with ease.B. Because the car has a strong steel body.C. Because the car has a very long history.D. Because the car can be fixed at a low cost.Questions 17 through 20 are based on the following conversation.17. A. Whether high-quality students can explain concepts clearly.B. Whether schools should adopt gifted education programs.C. Whether regular students can benefit from gifted ones.D. Whether parents can do something for the smart kids18. A. They will feel superior to their peers.B. They will focus on assisting their teachers.C. They will get motivated and reach their full potential.D. They will lose the chance to tutor their struggling peers.19. A. Gifted education programs are beneficial to some schools here.B. Both slower and advanced learners should receive special education.C. Regular classes discourage bright students' motivation due to boredom.D. Gifted programs rob average students of the chance to learn from bright ones.20. A. He has prejudice against regular students.B. He has preference for bright students.C. He is enthusiastic about gifted programs.D. He lacks understanding of gifted studentsⅡ. Grammar and VocabularySection ADirections: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper from of the given word; for the other blanks, use one word that best fits each blank.Long-term low self-esteem can cause depressionLow self-esteem makes us feel bad about ourselves. But did you know that over time it also can cause the development of serious mental conditions such as depression?Self-esteem is, very simply, he set of feelings you have about yourself. It’s developed by your experiences, thoughts, feelings, and relationships. (21) ________ self-knowledge, which refers to how much you know about yourself, self-esteem is formed around whether you like yourself or not. Depression is much more than just feeling sad. It drains your energy and makes everyday activities difficult.Doctors use low self-esteem as one possible symptom (22) ________ they diagnose the mental condition of major depressive disorder. They don’t necessarily care (23) ________ low self-esteem causes the depression or vice versa. However, personality researchers have long wondered about the chicken-and-egg problem of self-esteem and depression. Certainly, if you dislike yourself, you’ll be more likely (24) ________ (depress). On the other hand, if you’re depressed, you’ll be more likely to feel bad about yourself. The only way that (25) ________ (employ) to explore the highly related concepts of self-esteem and depression is through continuous research, (26) ________ ________ people are followed up over time.A study on depression conducted by University of Basel researchers Julia Sowislo and Ulrich Orth, (27) ________ (contrast) the competing directions of self-esteem to depression vs depression to self-esteem. The findings have revealed that over time low self-esteem is a risk factor for depression, regardless of who is tested and how. The study indicates that low self-esteem causes depression (28) ________ not vice versa.Therefore, if a person has low self-esteem, there’s a (29) ________ (great) risk of developing depression. This is a very important discovery because it shows that (30) ________ (improve) a person’s self-esteem can make him or her feel better.Section BDirections: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.Put down the phone and live in the momentHave you ever unintentionally left your phone at home and wondered how you would get through the day? Baylor College of Medicine’s Dr. Jin Han explains why this might be a sign that you need to put down your phone more often.“There has been a(n) __31__ in technology as our phones have gone from just regular cell phones to smart phones that allow you to multitask all with one device,”said Han, assistant professor at Baylor. “You use your phone now to receive emails, to text and chat and to access social media platforms -- __32__ your phone may be your connection to your social life.”Although they offer many advantages, Han cautions that using your smart devices can be harmful if you use them too much. For example, using your smart phone while driving, or even walking, can cause serious accidents. Also, staring at your screen for too long can be harmful to your __33__.Being __34__ too long to your phone also can impact the quality of your relationships, he said. If you are on your phone constantly and not __35__ with those around you, it can take away from your relationships with your family and friends. In addition, if you are using your phone too much in front your children, then they will likely follow your lead and use their own smart devicesrather than __36__ with you.“ In the end, the question is how you balance using your phone while not negatively __37__ your health.” Han said. “Anything that you are doing to the __38__ is no healthy anymore. While it is going to be almost impossible not to use this technology, we have t create a behavior that is healthy.”To help __39__ the time you spend on your phone, Han offered the following tips:●Limit the time spent on your phone: Set up certain time that you allow yourself to be on thephone.●Do not use your phone at night: Being on your phone late into the night can make it harderfor you to fall asleep and wake up the next day. Restricting your phone use at night can help you __40__ a healthy sleep behavior.Ⅲ. Reading ComprehensionSection ADirections: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.The scent of coffee appears to enhance performance in math Drinking coffee has benefits. __41__ the physical improvement, coffee may reduce our risk of heart disease. Coffee may even help us live longer. Now, research also reveals that the scent（气味）of coffee may help people perform better on the analytical portion of the Graduate Management Aptitude Test, or GMA T, a computer adaptive test __42__ by many business schools.The work, led by famous professor Adriana Madzharov, not only __43__ the hidden force of scent and the cognitive（认知）improvement it may provide on analytical tasks, but also expectation that students will perform better on those tasks. Madzharov, with his colleagues, recently published their findings.“It’s not just that the coffee-like scent helped people perform better on analytical tasks, which was already __44__,”says Madzharov. “But they also thought they would do better, and we demonstraded that this expectation was at least partly __45__ their improved performance.”___46___, smelling a coffee - like scent, which has no caffeine in it, has an effect similar to that of drinking coffee, suggesting a placebo（安慰剂）effect of coffee scent.Madzharov’s team tested 100 undergraduate business students, divided into two groups, with GMAT algebra questions. One group took the test in the __47__ of a coffee - like scent, while a control group took the same test - but in an unscented room. They found that the group in the coffee-smelling room scored significantly higher on the test.Madzharov’s team wanted to know more. Could the first group’s performance in quick thinking be explained, in part, by an expectation that a coffee scent would increase __48__ and consequently improve performance?The team designed a follow-up survey, conducted among more than 200 new participants, quizzing them on __49__ about various scents and their effects on human performance. Participants believed that they would feel more alert and energetic in the presence of a coffee scent, in contrast with a flower scent or no scent; and that __50__ to coffee scent would increase their performance on mental tasks. The results suggest that __51__ about performance can be explained by beliefs that coffee scent alone makes people more alert and energetic.Madzharov is now looking to explore whether coffee-like scents can have a(n) __52__ placebo effect on other types of performance, such as verbal reasoning. She also says that the finding - that coffee - like scent acts as a placebo for analytical reasoning performance - has many practical __53__, including several for business.“Sense of smelling is one of our most powerful senses,”says Madzharov. “Employers, architects, building developers, retail space managers and others, can use scents to help __54__ employees’or occupants’experience with their environment. It’s an area of great interest and __55__.”41. A. In contrast to B. Contrary to C. In addition to D. Equivalent to42. A. acquired B. required C. justified D. inquired43. A. distributes B. stimulates C. dominates D. highlights44. A. encouraging B. imposing C. conflicting D. challenging45. A. characterized by B. called for C. responsible for D. typical of46. A. In short B. By comparison C. In particular D. After all47. A. lack B., shift C. withdrawal D. presence48. A. comprehension B. alertness C. conscience D. context49. A. evidence B. definition C. symptom D. belief50. A. adaptation B. commitment C. exposure D. alternative51. A. implication B. expectation C. indication D. illustration52. A. similar B. concrete C. modified D. estimated53. A. simplification B. description C. resignation D. application54. A. enhance B. evaluate C. exploit D. prospect55. A. negotiation B. priority C. potential D. strategySection BDirections: Read the following three passage. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.(A)People generally see themselves through achievements. In doing that, they end up caring more about their image than the reality of who they actually are. Rather than their work doing the talking, they end up defining themselves by external markers that they hope will earn them respect.The problem with this is that it encourages both themselves and other people to judge their worth based on some relatively unimportant measure. For example, one day, their educational diploma may overshadow what they actually learned. Therefore, a better way to know a person, I think, is to ask a different set of questions: What motivates them? What makes them ache? What do they long for?It’s in this spirit that I want to publicly share my values. They are the compass（罗盘）that guides my life. The kindest and most sincere thing I can do is to see, recognize, and understand another person before I make judgments. From there, I can learn to treat others appropriately, depending on the context, learning from my mistakes with time and experience. It’s just a reminder that life is hard for all of us, while at the same time accepting that it’s important we are all also held accountable for our actions.I have learned that we are all deeply self-interested. I hope to be self-aware enough to check out of the power and status games. That means I’m not competing with anyone for a shiny object; I’d rather compete with myself. It’s about becoming so uniquely different that it would be aninsult for me to measure myself against someone else. I believe if I do the work to be internally free from the pull of the power and status games, then I can add value to others bused on my unique knowledge and experience.If this resonates with（与……共鸣）you, I invite you to join me on this journey in understanding and relating to this complex world. It’s a wonderful mystery, and I think together we can better define it -- not just personally, but also collectively.56. According to the article, which of the following is TRUE?A. The external markers are better ways to know a person.B. People generally judge others’ worth by what they have achieved.C. The author is someone who is keen on power games.D. Learning from mistakes is the first step of treating others kindly.57. What does the underlined word “overshadow” probably mean?A. be relatively similar toB. cause something to be stronger thanC. make something less importantD. block off light from something58. What of the following might the author agree with?A. Life is hard, so we shouldn’t criticize others when they are not responsible.B. One should overcome self-interest in order to judge others objectively.C. Everyone is unique, so showing off uniqueness is an insult to others.D. One should see and understand another person using a real compass.59. Why does the author write the article?A. To promote harmonious living.B. To ask people not to judge others.C. To call on readers to learn his values.D. To share his values of understanding the world.(B)The Elementary Science Fair Planning GuideThe most helpful, scientific, kid-friendly science Fair project planner known to kidsA Model, Display or Collection:Shows how something works in the real world, but doesn’t really test anything.Examples of display or collection projects can be: “The Solar System,”“Types of Dinosaurs,”“My Coin Collection.”Examples of models might be: “How a Tornado Forms” or “How an Electric Motor Works”.An Experiment:Lots of information is given, but it also has a project that shows testing being done and the gathering of data.Examples of experiments can be: “The Effects of Detergent（洗衣粉）on the Growth of Plants” or “Which Paper Towel is more Absorbent”.You can tell you have an experiment if you are testing something several times and changing a variable（变量）to see what will happen.Even though you can learn a lot from building a model or display, we recommend that you do an experiment! Why? Well, they are fun, they are more interesting and most of all, they take you through the SCIENTIFIC METHOD, which is the way real scientists investigate in real science labs. Besides that, the scientific method is what the judges are looking for!60. Which of the following science projects might be recommended by the guide?A. How swallows build their nests.B. What the solar system consists of.C. The three dances bees use to communicate.D. What structure can hold the most amount of weight.61. According to the guide, which of the following is TRUE?A. A model or a display is a great choice for the science fair.B. A hypothesis goes before a Question in doing an experiment.C. What tells an experiment from a model is whether to test something.D. The judges will instruct the scientific method before the science fair.62. Who will be most interested in reading this guide?A. Undergraduate students.B. Parents who have young kids.C. Staff working in the science labs.D. Judges invited to a science fair.(C)Getting active in midlife could be as good for you as starting young when it comes to reducing the risk of an early death, researchers have suggested. But experts say the study also shows that the benefits fade once exercise declines.“If you maintain an active lifestyle or participate in some sort of exercise from youth to middle age, you can reduce your risk for dying,” said Dr. Pedro Saint-Maurice, the lead author of the research. “If you are not active and you get to your 40s - 50s and you decide to become active, you can still enjoy a lot of those benefits.”The study was based on data from more than 300,000 Americans aged 50 - 71 who undertook a questionnaire（问卷）in the late-1990s. They were asked to recall the extent of their moderate to vigorous leisure exercise at different stages of their life. Researchers then used national records to track who died in the years up to the end of 2016. After taking into account factors including age, sex, smoking and diet, the team found that those who were exercising into middle age had a lower risk of death than those who had never carried out any leisure exercise. However, when the team looked at different patterns in the way people were active over their life, it found a surprise.Men and women who started exercising at the age of 40 - 50 reduced their risk of death from any cause by about 35%. The benefit was similar to that seen for people who reached and maintained similar activity from their teens or 20s onwards.However, the study found that the protective effect of exercise did not last forever. People whose levels of leisure exercise decreased by middle age had no difference in the risk of an early death to those who had always been couch potatoes. “If you have been active and you slowly decrease your exercise participation as you age, you lose a lot of the benefits that we know are associated with exercise,” Saint - Maurice said.But the study has limitations, including that it is based on individuals recalling how active they were many years before. What’s more, the research looked only at death records, not other aspects of health such as levels of sickness and disease. Nonetheless, he said, the message was positive. “This adds to the growing body of evidence about the importance of physical activity and exercise across he life course, and indicates that it is never too late to start.”63. Which of the following is TRUE about the study?A. The study took about two decades to complete.B. The study involved around 30,000 elderly Americans.C. Questionnaires and interviews were the sources of data.D. The participants in the study took regular physical exercise.64. According to the passage, what does “a surprise” (Para.3) refer to?A. The earlier you exercise, the greater your health benefits will be.B. Participating in exercise from youth to middle age benefits one’s health greatly.C. The benefit of getting active in midlife is similar to that of starting young.D. The benefits of exercising in midlife will decline once you stop exercising.65. It can be inferred from the passage that _________.A. an active lifestyle will not necessarily bring positive health benefits.B. participants’ memories may affect the reliability of the study resultC. people exercising from their teens can maintain health foreverD. women benefit more from vigorous exercise than men do66. Which of the following might be the best title of the passage?A. Exercise has its limitations, studies showB. Getting active when young, experts suggestC. Health benefits fade with age, doctors warnD. Never too old to start, researchers saySection CDirections: Read the following passage. Fill in each blank with a proper sentence given in the box. Each sentence can be used only once. Note that there are two more sentences than you need.Ecotourism can put wild animals at riskEcotourism has become increasingly popular in recent years. _____67_____ There travelers visit natural environments to fund conservation efforts or promote local economies.Now, scientists have analyzed more than 100 research studies on how ecotourism affects wild animals. They find the presence of humans changes the way animals behave, and those changes may put them at risk. Therefore, they concluded that such trips can be harmful to the animals.When animals interact in seemingly kind ways with humans, they may let down their guard. _____68_____. If this transfers to their interactions with predators（捕食者）, they are more likely to be injured or killed.The presence of humans can also discourage natural predators. It creates a kind of safe place for smaller animals that may make them bolder. For example, in Grand Teton National Park, elk and pronghorns in areas with more tourists are less alert and spend more time eating.____69____ “If animals become accustomed to tourists and if tourism practices enhance this taming, we might create unintended consequences - affecting the behavior or population of a species and influencing the species’ function in its community,” the researchers write.Ecotourism has effects similar to those of animal domestication and urbanization. Research has shown that domesticated silver foxes become more obedient and less fearful. Fox squirrels and birds that live in urbanized areas are slower to flee from danger. _____70_____ Scientists hope the new analysis will encourage more research into the interactions between people and wildlife. It is essential to develop further understanding of how various species in various situations respond to human interaction and under what conditions human exposure may place them at risk.Ⅳ. Summary WritingDirections: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.71. High level of deforestation continuesWe are all aware of the threats our planet is facing. Experts agree that it’s mainly us humans who are responsible for the destruction of the environment. One of the most destructive activities we are carrying out is cutting down forests - deforestation. This is done for many reasons, such as providing wood for fuel, making land available for housing or for crating space for more cattle to graze（吃草）on. This has been most noticeable in Brazil, which is home to the world’s largest rainforest. Deforestation there has hit its highest rate in a decade, according to official data. Overthe course of a year, an area about five times the size of London has been destroyed.The amount of deforestation in the Amazon and in other tropical（热带的）regions has actually seen a decline but the figures are still large. Global Forest Watch say that in 2018, an area equivalent to 30 football fields were cut down every minute. Frances Seymour from the World Resources Institute says that “If you look back over the last 18 years, it is clear that the overall trend is still upwards. We are nowhere near winning this battle.”What’s special about places like the Amazon is that they are primary forests which exist in their original condition with some species of trees dating back thousands of years. This habitat is home to unique and rare animals and is critical for sustaining biodiversity（生物多样性）. The BBC’s environment correspondent, Matt McGrath, says “These old forests really matter as stores of carbon dioxide, which is way the loss of 3.6 million hectares in 2018 is concerning.”Brazil has taken some steps to try and decrease deforestation by introducing government policies including fines for breaking land use regulations and illegal logging. And International campaigns to stop the trade of soy and beef farmed on deforested parts of the Amazon have also had a significant impact.Ⅴ. TranslationDirections: Translate the following sentences into English, using the words given in the brackets.72. 应该高度重视对这种常见病的预防。
专题02化学计量与化学计算-2020年高考真题和模拟题化学分项汇编（含答案解析）
+(CH3CO)2O(乙酸酐)
+CH3COOH， NA 代表阿伏加德罗常数的值。下列有
关说法正确的是
A．1 mol 苯所含的化学单键数目为 12NA B．0.1 mol 乙酸酐中含有的电子数目为 5.4NA C．气态苯乙酮的密度是气态乙酸密度的 2 倍 D．1L 2 mol·L－1 CH3COOH 溶液与足量钠反应生成的气体分子数为 NA 14．（2020 届辽宁省辽阳市高三第二次模拟）设 NA 为阿伏加德罗常数的值。下列说法正确的是 A．50 g 34%H2O2 溶液中含 H－O 键的数目为 NA B．180 g 淀粉完全水解生成葡萄糖的分子数为 NA C．1 L 0.1 mol·L－1K2SiO3 溶液中含 SiO32－的数目为 0.1NA D．反应 5NaClO2＋4HCl＝4ClO2↑＋5NaCl＋2H2O，每生成 1 mol ClO2 转移电子的数目为 NA 15．（2020 届江西省重点中学盟校高三联考）设 NA 为阿伏加德罗常数的值。下列有关叙述正确的是 A．用浓盐酸分别和 MnO2、KClO3 反应制备 1 mol 氯气，转移的电子数均为 2NA
2020届徐汇区高考化学二模(含答案)
2019学年第二学期徐汇区学习能力诊断卷高三化学试卷考试时间：60分钟总分：100分2020.5考生注意：1、本考试分设试卷和答题纸。
试卷包括两部分，第一部分为选择题，第二部分为综合题。
2、作答必须涂或写在答题纸上，在试卷上作答一律不得分。
相对原子质量：O—16 C—12 Na—23 Cl—35.5 K—39 Mn—55一、选择题（本题共40分，每小题2分，每题只有一个正确选项）1．日常生活中，下列试剂或方法不能起到消毒、杀菌作用的是A．75%酒精B．紫外线照射C．明矾D．84消毒液2．工业上获得大量乙烯的方法是A．卤代烃消除B．煤高温干馏C．炔烃加成D．石油裂解3．下列分离提纯操作与物质溶解性无关的是A．蒸馏B．萃取C．纸上层析D．分液4．实验室保存下列试剂时应使用如图试剂瓶的是A. 硝酸银固体B. 烧碱溶液C. 浓硝酸D. 浓硫酸5．能说明CS2是非极性分子的事实是A．是对称的直线型分子B．CS2沸点高于CO2沸点C．能在空气中燃烧D．分子中存在碳、硫双键6．铟（49In）与铷（37Rb）同周期，与铝（13Al）同主族。
下列说法正确的是A．In位于第四周期第ⅢA族B．原子半径：In > RbC．金属性：In>Al D．碱性：In(OH)3>RbOH7．Be元素与Al元素性质相似，下列说法错误的是A．BeCl2溶液呈酸性B．BeO能与NaOH溶液反应C．Be(OH)2 不溶于弱碱D．蒸干BeCl2溶液可得BeCl2晶体8．常温下，用下列试剂鉴别浓硫酸与稀硫酸，现象差异不大的是A．pH试纸B．金属铜C．金属铁D．胆矾晶体9．下列有机物中，既能发生水解又能发生消去反应的是A．乙醇B．一溴乙烷C．乙酸乙酯D．苯10．化学家用锌片与铜片并夹以食盐水浸湿的布片叠成如右图所示装置，下列说法正确的是A ．该装置将电能转化为化学能B．锌片上有H2生成C．Cu片被还原D．Zn片被氧化11．下列变化中，气体被氧化的是A．C2H2通入酸性KMnO4溶液B．Cl2通入KBr溶液C．H2S通入CuSO4溶液D．NH3通入AlCl3溶液浸有食盐水的布片漂粉精 红色纸花12．向下列溶液中加入少量过氧化钠固体，肯定不会产生沉淀的是A ．氯化铁溶液B ．饱和碳酸氢钠溶液C ．硫化钠溶液D ．饱和氢氧化钙溶液 13．右图表示实验状态下的启普发生器，相关推测错误的是A ．该装置气密性良好B ．可能在制取乙炔C ．可能在制取硫化氢D ．该装置活塞处于关闭状态 14．下列物质分离（括号内的物质为杂质）的方法错误的是A ．己烷（己烯）——溴水，分液B ．乙烯（二氧化硫）——氢氧化钠C ．硝基苯（苯）——蒸馏D ．乙酸乙酯（乙醇）——碳酸钠溶液，分液 15．与100 mL 0.1 mol ·L -1 (NH 4)2SO 4溶液中c (NH 4＋)基本相同的是A. 200 mL 0.1 mol ·L -1 NH 4Cl 溶液 B . 50 mL 0.2 mol ·L -1 NH 4NO 3溶液 C. 100 mL 0.2 mol ·L -1 NH 4HSO 4 D. 50 mL 0.2 mol ·L -1氨水 16．NO 2－既有氧化性，又有还原性。
2020届黄浦区高三二模化学试题(试卷版)
相对原子质量：H-1 C-12 N-14 O-16
一、选择题(本题共40分，每小题2分，只有一个正确选项。)
1.下列对乙醇的描述错误的是（）
A.能发生取代、消去、氧化反应
B.发生取代反应时断键有2种
C.与金属钠反应可判断乙醇的结构式
D.常做为有机溶剂和萃取剂
C. 因为某碱性溶液的焰色呈黄色，所以其溶质为NaOH
D. 因为电解质溶于水后电离为离子，所以电解质在溶液中的反应实质是离子反应
16.下列物质分离提纯所用原理不同于其它的是（）
A.粗盐提纯过滤泥沙B.用四氯化碳萃取碘水
C.实验室乙酸乙酯提纯D.实验室分离苯和溴苯
17.某温度下，体积一定的密闭容器中进行如下可逆反应X(g)+Y(g) Z(g)+W(s)ΔH= -QkJ·mol-1，下列叙述中，正确的是（ ）
B. 电解池中两电极材料可以相同
C. 牺牲阳极的阴极保护法和外加电流的阴极保护法都属于电解池原理
D. 原电池中两电极材料不可以相同
11.下列反应的离子方程式与量无关的是（）
A. 碳酸钠与盐酸B. 氯化铝与氢氧化钠
C 次氯酸钠与二氧化碳D. 铁与稀硝酸
12.下列现象能用勒夏特列原理解释的是（）
A. 配制氯化铁溶液时，把氯化铁溶于盐酸
④热的氧化铜遇乙醇→绿色
A. ①②③B. ②④C. ①②D. ①③
19.常温下，取pH=10的溶液1mL加水稀释到100mL，稀释后溶液的pH=a，下列判断正确的是（ ）
A. 如果是盐溶液则a＞8B. 如果是盐溶液则a＜8
C. 如果是碱溶液则a＜8D. 如果是碱溶液则a＞12
20.向四只盛有一定量NaOH溶液的烧杯中通入不同量的CO2气体后，在所得溶液中逐滴加入盐酸至过量，并将溶液加热，产生的气体与加入盐酸的物质的量的关系如图：
2020年高三教学质量检测试卷(二)【二模】文综政治试题
2020年高三教学质量检测试卷（二）【二模】文综政治试题姓名:________ 班级:________ 成绩:________一、单选题 (共12题；共24分)1. （2分） (2019高二下·黑龙江月考) 若不考虑其他因素，用D表示某商品的需求曲线，如图的经济现象与图象一致的是（）①加大新能源汽车购置税优惠对新能源汽车需求量的影响符合图（I）②高铁提高运行速度对航空客运需求的影响符合图（I）③煤炭限产能后煤炭价格上涨对天然气需求量的影响符合图（Ⅱ）④旅游景区的门票价格上调对游客需求量的影响符合图（Ⅱ）A . ①③B . ①④C . ②③D . ②④2. （2分）当前我国财政支出预算执行具有显著的“前低后高”特点，往往40%左右的预算资金要留到四季度支出，如无法正常支出，则在年末以结余、结转等方式留在国库、财政专户或者部门账户上，累积而成财政存量资金。
对于财政存量资金，下列看法正确的是（）①出现过多的财政存量资金意味着财政资金得到了合理的利用②过多的财政存量资金会削弱积极财政政策的实际效果③财政存量资金的增加是财政收入新常态的重要表现④应当深化预算管理制度改革，盘活财政存量资金A . ①②B . ①③C . ②④D . ③④3. （2分） (2016高一上·梅河口期末) 下列能够反映企业承担社会责任的是（）①依法维护劳动者的合法权益②遵守法律，遵守社会公德③积极参加社会公益事业④依靠技术进步和管理，提高企业的经济效益A . ①②③B . ①②④C . ①③④D . ②③④4. （2分） 2015年，我国对外非金融类直接投资创下ll80.2亿美元的历史最高值，同比增长14.7％，超额完成全年l0％的增长目标，实现中国对外直接投资连续13年增长。
下列对我国对外直接投资快速增长的原因分析正确的是（）①企业“走出去”的动力增强②我国外商投资环境不断优化③境外投资风险防控意识增强④“一带一路”引领作用突出A . ①②B . ①④D . ③④5. （2分） (2018高一下·汕头期末) 我国首个“村务监督委员会”——浙江省武义县白洋街道后陈村村务监督委员会成功换届选举。