1.流程题- (共1题)
石灰石（1）生石灰（2）熟石灰（3）氢氧化镁（4）氯化镁
请写出上述各步转化的化学方程式：
（1）_______________________________；
（2）_______________________________；
（3）_______________________________；
（4）__________________________________；
2.简答题- (共2题)
（1）现加入少量食盐晶体，充分搅拌和静置后，在温度不变的情况下，小球在液面沉浮有何变化？______，并简述理由：_____．
（2）若要在不用外力的情况下使小球略上浮，你准备采取的具体方法是_____．
（1）天然气水合物中，水分子形成一种空间笼状结构，CH4和少量的N2、CO2等分子填入笼内的空隙中，无固定的化学计量关系，因此天然气水合物属于____（选填“纯净物”或“混合物”），若某种天然气水合物中甲烷存在的形式是CH4•5.75•H2O，则两者质量比为m（CH4）：m（H2O）= ___________
（2）若将天然气从其冰态物中分离出来，有三种方法：
①在一定温度下，______使气体从水合物中分离出来；
②在一定压力下，______使气体从水合物中分离出来；
③通过加入甲醇或盐类等物质，可降低水合物的凝固点
3.单选题- (共4题)
| A．因为石油泄漏会污染海洋，所以应禁止开采海底石油 |
| B．可以用燃烧法处理泄漏的石油，既快速又无污染 |
| C．石油是化石燃料，被誉为工业的“血液” |
| D．由于新能源的开发，可以无节制的使用石油资源 |
4.选择题- (共2题)
Most children like to watch TV. It's very interesting. By(通过) watching TV they can see and learn a lot and know many things about their country and the world. Of course, they can also learn over the radio. But they can learn better and more easily with TV. Why? Because they can hear and watch at the same time. But they can't see anything over the radio.
TV helps to open children's eyes. TV helps to open their minds, too. They learn newer and better ways of doing things. They may find the world is now smaller than before.
Many children watch TV only on Saturday or Sunday evening. They are always busy with their lessons. But a few children watch TV every night. They go to bed very late. They can't have a good rest. How about you, my young friend?
Mr. and Mrs. Su don't often go out in the evening, but today they go out for a walk after supper. They go to the park and have a good time there. On their way home, Mr. Su says to Mr. Su, "Look! A woman is running in the street and a man is running after her." Mr. Su says, "What's the matter? Let's go and help her."
Now the woman gets near them. Mr. Su asks, "Shall we help you?" "No, thank you," the woman says, "My husband（丈夫） and I are running home, and the slower (较慢的) one does the housework."
5.填空题- (共1题)
（1）海底蕴藏着大量的煤、___________、天然气等常规化石燃料；
（2）天然气的主要成分是甲烷（CH4），可直接用作气体燃料，燃烧反应前后分子种类变化的微观示意图如下所示。
①1个B分子中含有___________个原子；
②四种物质中属于化合物的是__________（填图中字母）；
③若8gA参加反应，则生成C的质量为__________g；
（3）海水晒盐能够得到粗盐和卤水，卤水中含有MgCl2、KCl和MgSO4等物质，下图是它们的溶解度曲线。
t1℃时，MgCl2、KCl和MgSO4三种物质的饱和溶液中，溶质质量分数最大的是________。将t1℃的MgCl2、KCl和MgSO4三种物质的饱和溶液加热到t2℃以上时，可能会析出__晶体。
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【1】题量占比
流程题:(1道)
简答题:(2道)
单选题:(4道)
选择题:(2道)
填空题:(1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：2
7星难题：0
8星难题：3
9星难题：3