1.选择题- (共7题)
1.
观察如图并回答问题：
由图可知，HCl与NaOH的反应实质是H+ 和OH﹣ 之间的反应，此反应可表示为：H++0H﹣=H2O．像这种用实际参与反应的离子来表示反应的式子称为离子方程式．任何复分解反应都可用离子方程式来表示．
【练习】按照书写化学方程式的要求写出下列反应的离子方程式
HCl溶液与AgNO溶液反应：{#blank#}1{#/blank#} ．
HNO3溶液与Na2CO3溶液反应： {#blank#}2{#/blank#} ．
【归纳】复分解反应的实质是：阴阳离子结合生成{#blank#}3{#/blank#}的反应．
【应用】判断在水溶液中一定能大量共存的离子组是{#blank#}4{#/blank#} ．
a、Na+、H+、Cl﹣、CO32﹣ b、H+、Ba2+、Cl﹣、SO42﹣
c、Cu2+、Na+、NO3﹣、OH﹣ d、H+、K+、Cl﹣、SO42﹣．
7.
某同学设计鉴别物质引导图图下：
回答下列问题：
（1）A为{#blank#}1{#/blank#}，此反应的化学方程式为{#blank#}2{#/blank#} ．
（2）B为{#blank#}3{#/blank#} ．
（3）C为{#blank#}4{#/blank#}．
2.单项选择- (共7题)
8.
Always read the ______ on the bottle carefully before taking medicine.
| A．instructions | B．explanations | C．descriptions | D．introductions |
9.
______ of the earth’s surface ______ covered with water.
A Two-third; is B Two-third; are C Two-thirds; is D Two-thirds; are
A Two-third; is B Two-third; are C Two-thirds; is D Two-thirds; are
10.
It is reported that the US uses ______ energy as the whole of Europe.
| A．as twice | B．twice much | C．twice much as | D．twice as much |
11.
(2013·甘肃部分示范学校调研考试)We often provide our children with toys, footballs or basketballs, ________ that all children like these things.
| A．thinking | B．think |
| C．to think | D．thought |
12.
The cakes ______ nice in the bakery attract many customers.
| A．to taste | B．tasting | C．tasted | D．to be tasted |
13.
--- Who called just now?
--- A man ______ Mr. Nelson.
A called himself B calling himself C was called D who called
--- A man ______ Mr. Nelson.
A called himself B calling himself C was called D who called
试卷分析
-
【1】题量占比
选择题:(7道)
单项选择:(7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：0
5星难题：0
6星难题：5
7星难题：0
8星难题：2
9星难题：0