1.单选题- (共9题)
A.大于 20 毫升 | B.等于 20 毫升 |
C.小于 20 毫升 | D.无法确定 |
A.用酒精灯加热试管里的液体时,试管里的液体不应超过试管溶剂的1/2 |
B.实验后剩余的药品应放回原试剂瓶中,避免浪费 |
C.洗过的玻璃仪器内壁附着的水滴既不聚成水滴,也不成股流下时,表明仪器已洗干净 |
D.不小心碰倒酒精灯,洒出的酒精在桌上燃烧起来时,应立即用水扑灭 |
2.选择题- (共1题)
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
The benefits of keeping a journal(日志)
If you want to grow, one important thing you should do is keep a journal. It may seem simple, but it can make a big difference in your life. I have been keeping journals for years. Writing all the lessons I learn and all the ideas I get has become a habit for me. {#blank#}1{#/blank#} Here are some benefits you will get by keeping a journal.
♦ It prevents you from losing an idea. Have you ever gotten an idea and lost it later because you didn't write it down? {#blank#}2{#/blank#} But then I developed the habit of writing down every idea that came into my mind as soon as possible. If I am away from my computer, I usually write it down on a piece of paper that I bring wherever I go. I will then transfer the idea to the journal in my computer.
♦ It helps you review all the lessons you've learned. By reviewing your journal, you can quickly see the lessons you've learned and the ideas you've gotten. {#blank#}3{#/blank#} You can use the ideas to propel yourself forward.
♦ {#blank#}4{#/blank#} After keeping a journal for years, you can look back at it and see how far you've gone. Things that were big problems in the past might seem small today. The raw ideas you had in the past have been realized today.
♦ It helps you expand your ideas. When you try to come up with a sentence to express an idea, you are thinking actively about it. {#blank#}5{#/blank#} In the end, you will expand your ideas.
A.I often experienced that myself.
B.It trains you to express your thoughts.
C.It allows you to see your progress over time.
D.Just use whatever tool you feel comfortable with.
E.Thinking actively helps you connect your idea to another idea.
F.And to be honest, I can't imagine what my life would be like without it.
G.Then you can do whatever necessary to avoid repeating the same mistakes.
3.填空题- (共6题)
(1)试管外壁有水时,不擦干直接加热_______;
(2)胶头滴管取用试剂后,将其倒置____;
(3)用嘴吹灭酒精灯____;
(4)倾倒液体药品时,试剂瓶标签没有朝向手心____。

(1)填写如图所示仪器的名称:
A_____;C_____;D_____;F_____;G_____;
(2)某学生用托盘天平称量2.5g食盐,在称量中发现指针偏向分度盘左边,接下来应采取的措施是_____(填写序号)
A 增加砝码 B 减少砝码 C 添加食盐 D 减少食盐

(1)如图②,用完酒精灯后,必须用灯帽盖灭、盖灭后轻提一下灯帽,再重新盖好。对其原因的叙述不正确的一项是_____ (填序号)
A 平衡气压,方便取下灯帽 B 减少挥发,利于节约酒精
(2)在实验室中,下列做法正确的是_____
A 对某些药品,为了更明确性质,可把鼻孔到容器口去闻一闻气味
B 实验空余的药品不要随意丢弃,可拿回家继续做实验
C 做完实验离开实验室前,应关闭水龙头和电源,将实验台物品整理千净
D 做实验时,为了取得更好的实验效果,应尽可能多的添加药品以便观察
(3) 常用作反应容器且能够直接加热的玻璃仪器是_____。
(2)量取水的体积时,仰视量筒读数为10mL,实际量取水的体积比10mL_____。(大、小或等于)
(3)给试管里的液体加热,试管内液体的量不可超过试管容积的_____。

(1)吸取和滴加少量的液体需要用_____;(填序号,下同)
(2)少量溶液相互反应时的反应容器,需要用_____;
(3)取用一定量的液体药品时,需要用_____;
(2)如果没有说明用量,应按_____取用,液体一般取_____,固体_____。
(3)取用细口瓶里的药液时,先拿下瓶塞,_____在桌上。然后拿起瓶子,使瓶上的标签向着_____。倒完液体,立即盖紧瓶塞,把瓶子放回原处。
4.实验题- (共3题)
Ⅰ.把A试管底部放在酒精灯火焰上方约3 cm处加热。
Ⅱ.把B试管底部放在酒精灯外焰部分加热。
Ⅲ.把C试管底部放在即将与酒精灯灯芯接触处加热。
实验结果如下表:
试管编号 | A | B | C |
水沸腾所用时间/s | 90 | 30 | 45 |
(1)由此小亮同学得出的结论是______________,根据他的这一结论,你对用酒精灯加热的建议是____________。
[继续探究] 小明同学对酒精燃烧的产物产生了兴趣,设计了相关的实验进行探究,请你帮他完成下列实验报告。
[查阅资料] 二氧化碳能使澄清石灰水变浑浊。
(2)填写实验报告:
实验操作及现象 | 结论 |
把一只干而冷的烧杯罩在酒精灯火焰上,观察到烧杯内壁出现水珠 | 说明酒精燃烧时生成了________ |
用手触摸上一步骤中的烧杯底部,感觉________ | 说明酒精燃烧时有热量放出 |
迅速将烧杯倒转,并向其中倒入少量澄清石灰水,发现澄清石灰水变浑浊 | 说明酒精燃烧时生成了____________ |

结论:(1)①蜡烛燃烧产生黄白色火焰,放出热量,受热时熔化属于_____变化。
②木条处于外焰的部分最先变黑,说明外焰温度最_____。
③烧杯内壁有水雾出现,说明蜡烛燃烧生成了水;蜡烛燃烧后还生成_____,该气体能使澄清的石灰水变_____。
(2)白烟能重新燃烧,说明白烟主要是_____的固体小颗粒。
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【1】题量占比
单选题:(9道)
选择题:(1道)
填空题:(6道)
实验题:(3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:5
9星难题:11