1.科学探究题- (共1题)
《设计实验》第一小组同学共同设计了如上图的A、B两套装置。
你认为合理的是（填编号）_______ 。
《进行实验》
《数据分析》 实验结束后，整理数据如下：（注：集气瓶容积为100mL）
| 组 别 | 1 | 2 | 3 | 4 | 5 | 6 |
| 进入瓶中水的体积（mL） | 20 | 18 | 19 | 17 | 21 | 19 |
通过对实验数据分析，实验得出氧气约占空气体积的__________。
《实验分析》（1）红磷要过量的原因是____________________；
（2）弹簧夹打开的适宜时机是__________________；
（3）实验结束，发现测定出的空气中氧气的体积分数低于l/5，可能的原因是_____（答出一点即可）
《改进实验》
（1）第二小组同学设计了C实验装置，优点是：_________________。
（2）第三小组同学设计了D实验装置，优点是：_________________。
2.推断题- (共1题)
（1）物质B在反应①中的作用是____________ ．
（2）任举一例气体D的用途______________．
（3）若F为黑色固体，写出反应③的符号表达式______________________，若G为黑色固体，写出反应③的符号表达式______________________．
3.单选题- (共7题)
| A．柠檬酸属于氧化物 |
| B．柠檬酸是由6个碳原子、8个氢原子和7个氧原子组成的 |
| C．柠檬酸中氧元素的质量分数最大 |
| D．柠檬酸中碳、氢、氧三种元素的质量比为6：8：7 |
| A．铁丝在空气中剧烈燃烧，火星四射，生成黑色固体 |
| B．硫磺在空气中燃烧产生淡蓝色火焰，生成二氧化硫气体 |
| C．磷在空气中燃烧产生大量白雾，放出热量 |
| D．镁带在空气中剧烈燃烧，放出热量，生成白色固体 |
| A．①中表示：KMnO4制取氧气时，MnO2随着反应进行质量发生的变化 |
| B．②中表示：a，b两试管中分别装有等质量的双氧水溶液，并向a试管中放入催化剂后，随着反应的进行氧气的生成情况 |
| C．③中表示：KMnO4制取氧气时，试管中剩余的固体随着反应的进行质量的变化情况 |
| D．④中表示：双氧水制取氧气时，生成的氧气质量的变化情况 |
| A．量取9.5ml的液体可用100ml的量筒 | B．集气瓶可以用作反应容器 |
| C．给试管里的液体加热时，液体体积最多为试管容积的2/3 | D．试管、烧杯、蒸发皿等仪器可在酒精灯火焰上直接加热 |
4.选择题- (共2题)
A. show me the building, B. was rising , C. make a living, D. could hardly sleep E. took my taxi F. pay you |
Twenty years ago, I drove a taxi for a living. One time in the middle of the night, an old lady in her 80s {#blank#}1{#/blank#} . She gave me an address, and then asked, “Could you {#blank#}2{#/blank#}?”
“It's not the shortest way,” I answered quietly .
“Oh, I don't mind,” she said. “I'm in no hurry. I'm on my way to a hospice(临终医院). I {#blank#}3{#/blank#} The doctor says I don't have very long.”
I quickly reached over and shut off the meter(计价器). For the next two hours, we drove through the city. She{#blank#}4{#/blank#}where she had once worked, the neighborhood where she had lived, the place where she danced as a girl. As sun {#blank#}5{#/blank#}, we got to the hospice.
“How much should I {#blank#}6{#/blank#}?” she asked, reaching into her purse.
“Nothing ” I said.
“You have to{#blank#}7{#/blank#} ” she answered.
“Oh, there are other passengers,” I answered.
“You gave an old woman some moment of happiness”. She said: “Thank you.”
I drove into the fine morning light. Behind me, a door shut. It was the sound of closing of a life. I drove aimlessly, lost in thought. For the rest of the day, I {#blank#}8{#/blank#}. What if that woman had got an unfriendly drive, or one who was impatient to his shift? What if I had refused to take the run?
A. show me the building, B. was rising , C. make a living, D. could hardly sleep E. took my taxi F. pay you |
Twenty years ago, I drove a taxi for a living. One time in the middle of the night, an old lady in her 80s {#blank#}1{#/blank#} . She gave me an address, and then asked, “Could you {#blank#}2{#/blank#}?”
“It's not the shortest way,” I answered quietly .
“Oh, I don't mind,” she said. “I'm in no hurry. I'm on my way to a hospice(临终医院). I {#blank#}3{#/blank#} The doctor says I don't have very long.”
I quickly reached over and shut off the meter(计价器). For the next two hours, we drove through the city. She{#blank#}4{#/blank#}where she had once worked, the neighborhood where she had lived, the place where she danced as a girl. As sun {#blank#}5{#/blank#}, we got to the hospice.
“How much should I {#blank#}6{#/blank#}?” she asked, reaching into her purse.
“Nothing ” I said.
“You have to{#blank#}7{#/blank#} ” she answered.
“Oh, there are other passengers,” I answered.
“You gave an old woman some moment of happiness”. She said: “Thank you.”
I drove into the fine morning light. Behind me, a door shut. It was the sound of closing of a life. I drove aimlessly, lost in thought. For the rest of the day, I {#blank#}8{#/blank#}. What if that woman had got an unfriendly drive, or one who was impatient to his shift? What if I had refused to take the run?
5.填空题- (共1题)
6.实验题- (共1题)
请你回答下列问题：
（1）仪器a的名称是_____．
（2）实验室选用B装置制取氧气的优点是_____，其反应的符号表达式是_____．
（3）实验室若用高锰酸钾制取氧气，其反应的符号表达式是_____．图中的收集装置，不能用来收集氧气的是_____（填字母编号）．上述实验气体收集完毕后，发现水槽中的水变红了，可能的原因是_____．
（4）硫化氢（H2S）气体是一种密度比空气大，能溶于水的有毒气体，其水溶液叫氢硫酸．小虹同学认为可用E或F装置收集硫化氢气体，但小明同学经过思考后，认为E和F都有不合理之处，请你从既能收集硫化氢气体又能保护环境的角度提出改进的措施_____．
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【1】题量占比
科学探究题:(1道)
推断题:(1道)
单选题:(7道)
选择题:(2道)
填空题:(1道)
实验题:(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：4
7星难题：0
8星难题：6
9星难题：1