1.流程题- (共1题)
(1)推测草酸的化学式是____________；
(2)“沉锌”过程中发生复分解反应,反应的化学方程式是_______________________________
(3) “操作A”的名称是______________ 实验室常用的研磨仪器是_____________；
(4)“高温灼烧”时草酸锌分解,反应的化学方程式是______________________________。
2.推断题- (共1题)
Ⅰ．取少量固体样品于烧杯中，先加足量水溶解，再加入足量的BaC12溶液，有白色沉淀产生；
Ⅱ．继续向烧杯中逐滴加入稀盐酸并不断搅拌，烧杯内白色沉淀质量随加入稀盐酸质量的变化如图所示。请回答下列问题：
（1）AB 段发生反应的化学方程式：_____；
（2）D 点溶液中含有的溶质：_____。
3.计算题- (共1题)
(1)石灰石与稀盐酸的质量比为_____时，恰好完全反应；反应中共产生了CO2_____g。
(2)该石灰石中CaCO3的质量分数是_____。
(3)通过计算求所用盐酸的溶质质量分数________。
4.单选题- (共7题)
| A．NaOH、CuSO4、HCl | B．NaNO3、Na2SO4、Na2CO3 |
| C．KCl、Ba(NO3)2、HCl | D．NH4NO3、NaOH、K2SO4 |
A． | B． | C． | D． |
A． 表示往盐酸中滴加蒸馏水逐渐稀释 |
B． 表示等体积、等质量分数的过氧化氢溶液的分解 |
C． 表示质量、颗粒大小都相同的金属分别投入足量同浓度的稀盐酸中 |
D． 表示HCl和FeCl3的混合溶液中逐滴滴加NaOH溶液 |
A.A B.B C.C D.D
A. 装置中试管口需略向下倾斜，主要是为了利于通入氢气
B. 在给试管内药品加热前,需先通氢气排尽试管内的空气
C. 待药品完全反应后,需同时撤去酒精灯和通氢气的导管
D. 该实验装置也可直接用于一氧化碳还原氧化铜的实验
A．“立即出现红色固体”是由于很快发生了如下转化：CuO CuSO4 Cu |
| B．“产生大量无色气泡”是由于发生了如下反应:Fe+H2SO4=FeSO4+H2↑ |
| C．该实验条件下，硫酸铜比稀硫酸更容易跟铁粉发生反应 |
| D．在不同浓度的硫酸铜和稀疏酸的混合溶液中投入铁粉，都是硫酸铜先跟铁粉反应 |
| A．实验甲：试管中出现红褐色沉淀 |
| B．实验乙：系于细线下原来保持水平的粗铜丝经过加热、冷却后 a 端略下降 |
| C．实验丙：放置很长一段时间后，饱和硫酸铜溶液中析出少量蓝色晶体 |
| D．实验丁：出现白色沉淀且沉淀不消失，则无色溶液中一定含有硫酸根离子 |
A. 只有① B. 只有② C. ①或② D. ①或②或③
5.选择题- (共2题)
A big fire broke out in a clothing factory in our city last Wednesday. At 9:18 that morning, when the employees were working {#blank#}1{#/blank#} (busy) in the 4-storeyed building, heavy smoke was seen {#blank#}2{#/blank#}(come) out of the windows on the second floor. The fire lasted nearly an hour, and the majority of the 345 employees managed {#blank#}3{#/blank#}(escape) from the fire. Unfortunately, 7were killed, and 23 injured, lightly or seriously.
Some workers {#blank#}4{#/blank#}(complain) that aids came too late,{#blank#}5{#/blank#} the firemen did come just 10 minutes after the fire was reported. To rescue everyone from the burning and smoking building in such a short time was too difficult. The only two exits of the big building were not enough for so many people to withdraw in {#blank#}6{#/blank#} hurry.
The reason of the fire, according to an investigator, was {#blank#}7{#/blank#}someone broke the non-smoking rule in the factory, because some cigarette {#blank#}8{#/blank#}(end) were found. Next two weeks, 15 inspection teams will be working in all the factories {#blank#}9{#/blank#} turn, aiming to clear away the possibility of more fires.{#blank#}10{#/blank#} (hope), no disasters like this will happen again.
A big fire broke out in a clothing factory in our city last Wednesday. At 9:18 that morning, when the employees were working {#blank#}1{#/blank#} (busy) in the 4-storeyed building, heavy smoke was seen {#blank#}2{#/blank#}(come) out of the windows on the second floor. The fire lasted nearly an hour, and the majority of the 345 employees managed {#blank#}3{#/blank#}(escape) from the fire. Unfortunately, 7were killed, and 23 injured, lightly or seriously.
Some workers {#blank#}4{#/blank#}(complain) that aids came too late,{#blank#}5{#/blank#} the firemen did come just 10 minutes after the fire was reported. To rescue everyone from the burning and smoking building in such a short time was too difficult. The only two exits of the big building were not enough for so many people to withdraw in {#blank#}6{#/blank#} hurry.
The reason of the fire, according to an investigator, was {#blank#}7{#/blank#}someone broke the non-smoking rule in the factory, because some cigarette {#blank#}8{#/blank#}(end) were found. Next two weeks, 15 inspection teams will be working in all the factories {#blank#}9{#/blank#} turn, aiming to clear away the possibility of more fires.{#blank#}10{#/blank#} (hope), no disasters like this will happen again.
6.填空题- (共3题)
(1)直饮水机是采用“活性炭+超滤层+紫外线”的净水工艺．饮水台饮用水属于_____(选填“混合物”或“纯净物”)．
(2)①这个分离过程属于_____(选填“物理变化”或“化学变化”)．
（1）写出NaOH溶液吸收SO2的化学方程式________。
（2）图中小球分别表示NaOH溶液及吸收SO2后所得溶液中溶质的微粒，其中“
”表示的微粒是________。
(1)图一是向氢氧化钠溶液中逐滴加入盐酸时溶液温度与盐酸溶液体积之间的变化关系图。氢氧化钠和盐酸的反应是_____反应(填“放热”或“吸热”)。
(2)图中M点的意义_____。
(3)图二是向碳酸钠溶液中逐滴加入盐酸时有关反应图象，该图象说明向碳酸钠溶液中加入盐酸时反应分两步完成。先发生的是①Na2CO3+HCl═NaHCO3+NaCl，所以当加入盐酸的体积在0～v1mL时无气泡产生，然后再发生的是②NaHCO3+HCl＝NaCl+H2O+CO2↑，加入的盐酸与第一步生成的NaHCO3反应，根据图象若V1是10mL，则V2的值是_____mL。
7.实验题- (共2题)
(1)钛被称为“21 世纪金属”，呈灰色，密度较小，它能在氮气中燃烧，熔点较高。钛合金是新型的结构材料，主要用于航天和航海工业。上述描述中属于钛的化学性质的是_____；
(2)某小组用如图所示装置对铁生锈的条件进行探究。5min后发现A中铁钉表面灰暗，B中铁钉仍然光亮，对比可得：决定铁生锈快慢的一个重要因素是_____。
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【1】题量占比
流程题:(1道)
推断题:(1道)
计算题:(1道)
单选题:(7道)
选择题:(2道)
填空题:(3道)
实验题:(2道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：1
5星难题：0
6星难题：9
7星难题：0
8星难题：4
9星难题：1