1.简答题- (共1题)
2.单选题- (共4题)
A.试管:同学们不爱惜我,我被摔碎了 |
B.铁钉:好难受啊,我在潮湿空气中生锈了 |
C.灯泡:我通电后发光了,给学生带来光明 |
D.浓硫酸:我在空气中放置一段时间质量增加了 |
A.铁丝在氧气中剧烈燃烧,火星四射,生成四氧化三铁 |
B.打开盛有浓盐酸的试剂瓶看到有大量白烟] |
C.硫在氧气中燃烧发出蓝紫色火焰 |
D.紫色石蕊试液滴加到稀盐酸中,石蕊试液由紫色变为蓝色 |
3.选择题- (共7题)
用情态动词填空。
You {#blank#}1{#/blank#} hurry. There is still half an hour before the train leaves.
用情态动词填空。
You {#blank#}1{#/blank#} hurry. There is still half an hour before the train leaves.
用方框所给出的选项完成对话。
[A middle school student and her mother are visiting the security education show(安全教育展)]
M: Come on, darling, so many pictures here!
S: {#blank#}1{#/blank#}
M: Traffic safety.
S: Sounds boring.
M: {#blank#}2{#/blank#}
S: Maybe. Oh! Mum, look at this picture, a boy is hit a car when he is running across the road. {#blank#}3{#/blank#}
M: So it is!
S: {#blank#}4{#/blank#} That helps us stay safe from danger.
M: Yes, better safe than sorry. Let's go to another hall to learn more about hot to protect ourselves.
S: {#blank#}5{#/blank#} Let's go.
A. Good idea. |
用方框所给出的选项完成对话。
[A middle school student and her mother are visiting the security education show(安全教育展)]
M: Come on, darling, so many pictures here!
S: {#blank#}1{#/blank#}
M: Traffic safety.
S: Sounds boring.
M: {#blank#}2{#/blank#}
S: Maybe. Oh! Mum, look at this picture, a boy is hit a car when he is running across the road. {#blank#}3{#/blank#}
M: So it is!
S: {#blank#}4{#/blank#} That helps us stay safe from danger.
M: Yes, better safe than sorry. Let's go to another hall to learn more about hot to protect ourselves.
S: {#blank#}5{#/blank#} Let's go.
A. Good idea. |
4.填空题- (共6题)
|
(1)通常用作保护气和通电时发出有色光的是 ;(2)白色固体物质是 ;
(3)能供呼吸,支持燃烧的物质是 ;
(4)能使澄清石灰水变浑浊且参与植物光合作用的是 ;
(5)有刺激性气味且对空气造成污染的气体是 。

(1)写出图中标有①②的仪器名称:① ② 。
(2)王丽用高锰酸钾制取氧气,她选择上述装置中的A和 或 (填字母)进行组装。你认为A装置中还缺少 。写出该反应的化学方程式 。
(3)实验室选用B和D装置可制取初中化学常见的气体是 (答一种),写出实验室制取该气体的化学方程式 。

(1)图中N点表示的意义是 。
(2)t2℃时,A、B、C 三种物质的溶解度大小关系为 。
(3)把 t3℃时等质量的三种物质的饱和溶液升高温度至t2℃,则此时三种溶液的溶质质量分数大小关系是 。
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【1】题量占比
简答题:(1道)
单选题:(4道)
选择题:(7道)
填空题:(6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:8
7星难题:0
8星难题:1
9星难题:1