《课题走进化学实验室》学案.pdf

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1、1/5 课题 3 走进化学实验室学案请在上课前阅读一单元课题三及附录一相关内容：一.化学实验常用仪器的使用：名称仪器示意图主要用途使用时注意事项 1.少 量 物 质间相互反应的容器 2.盛放溶液 1.盛放溶液不超过试管容积的1/2，加热时不超过。2.加热液体时应使试管受热均匀，试管倾斜与桌面成，试管口不要。1.溶解 物质，配制溶液 2.反应容器 1.用于溶解时，所加液体不超过容积的1/3，并用玻璃棒不断轻轻搅拌 2.加热前外壁要干燥，加热时要垫。用于量取一定体积的液体 1.不能用作反应容器，不能加热 2.量液时应竖直放置，使视线与保持水平，读数取凹液面最低点刻度。1.固 定 各 种反应器和其它

2、仪器 2.铁 圈 可 代替漏斗架使用 1.装置要稳，要使铁圈、铁夹与铁架台底盘位于同一侧方向 2.夹持玻璃仪器不能太紧，应在铁夹内侧衬石棉绳实验室常用热源 1.酒精量不超过容积，不少于容积1/4 2.外焰温度最高，加热时使用。3.不可用燃着的酒精灯去点燃另一个酒精灯；不可向燃着的酒精灯中添加酒精；使用完毕用灯帽盖灭，不可用嘴吹灭。用于液体的蒸发、浓缩和物质的结晶 1.盛放液体不超过容积的2/3，可直接加热 2.加热过程中要用不断搅拌液体；当蒸发皿中出现固体时即停止加热。3.高温下不宜骤冷2/5 1.过滤液体 2.倾注液体过滤时漏斗下端管口应紧靠接收容器的器壁 1.收集 气体，贮存少量气体 2.

3、进 行 气 体与其它物质间的反应 3.用 于 组 装少量气体发生装置 1.不能用来加热 2.固体和气体反应剧烈时（如铁和氧气的反应），瓶底要放少量水或细沙 3.收集气体时，应用玻璃片盖住瓶口用于固体物质在气体中燃烧一般为铁或铜制品，遇有能够与铁、铜反应的物质时，应在燃烧匙底部放一层细沙或垫石棉绒滴加液体药品 1.使用前先捏紧胶头，再放入液体中吸收液体 2.滴加药品时，滴管不要插入或接触容器口及内壁用作反应容器易使反应物摇匀；常用于中和滴定、接收蒸馏液体等 1.盛液体不要太多 2.加热时应垫石棉网用来夹持试管给试管加热 1.试管夹从试管套，夹在试管的中上部 2.加热时，用手握住试管夹的柄，不要把

4、拇指按在柄上 3.防止锈蚀和烧损用于取用粉末状 固 体 药 品（药匙的两端分别为大小两个匙）1.取粉末状固体量较多时用大匙，较小时用小匙 2.药匙用过后要立即用干净的纸擦拭干净，以备下次使用。文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y

5、6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10

6、文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:C

7、S2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8

8、Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 H

9、C8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T1

10、0Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4

11、ZO5U1Y6M3O103/5 用于搅拌、过滤或转移液体时引流用后要冲洗干净二.化学实验基本操作：1.药品的取用：（1）取用原则：不能，不要把鼻孔凑到容器口去闻药品（特别是气体）的气味，不得。应严格按规定的用量取药品；若无说明用量，一般应按最少量取用：液体mL，固体只需底部。用剩的药品不能，不要随意丢弃，不能拿出实验室，要放入内。（2）固体药品的取用：块状（密度较大的颗粒）实验操作1-6：试管横放块状固体用放在试管口部试管缓缓竖起（注意防破）。粉末状 实验操作1-7：试管（或倾斜）盛满药品的或伸入试管底部试管直立（注意防沾）。（3）液体药品的取用：实验操作1-8 倾倒：取下瓶塞放试管倾斜与瓶口

12、紧挨（手心着标签）缓缓倒入。量取：量筒倾斜且与瓶口紧挨缓缓倒入接近所量刻度量筒放平稳，视线平视所量刻度改用胶头滴管逐滴加入直到达到所要量取的体积（注意视线要与量筒内保持水平）。吸取或滴加：捏紧橡胶乳头，排出空气滴管伸入所吸液体中放开手指，即被吸入取出滴管悬空放置在被滴入的容器口的方拇指、食指捏挤橡胶乳头，滴入容器中（注意胶头滴管不能平放倒置；及时清洗；不要乱放；专管专用）。2.托盘天平：（1）用途用于精密度要求不高的称量，能称准到g。所附砝码是天平上称量时衡定物质质量的标准。(2)使用注意事项：称量前天平要放平稳，游码放在刻度尺的零处，调节天平左、右平衡螺母，使天平平衡。称量时把称量物放在左盘

13、，砝码放在右盘。砝码要用镊子夹取，先加质量大的砝码，再加质量小的砝码。（说明：左物右码放反了：测量值偏小或测量值不变）称量干燥的固体药品应放在称量。易潮解、有腐蚀性的药品（如氢氧化钠），必须放在里称量。称量完毕后，应把砝码放回砝码盒中，把游码移回零处。3.仪器的连接与拆卸：组装：从下往上，从左往右；拆卸：从上往下，从右往左。4.洗涤仪器：洗涤原因：不干净会影响实验效果。洗涤方法：a.振荡：用手腕的力量。b.用刷洗：上下移动或转动试管刷，不要用力过猛。c.试管内壁有油污，用或清洗，再用水洗净；d.试管内壁附有不溶性杂质，一般先用溶解，再用水洗净。洗涤文档编码:CS2M8I8Q3U1 HC8Y4T

14、10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4

15、 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1

16、Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O1

17、0文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:

18、CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I

19、8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1

20、HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O104/5 干净标准：玻璃仪器内壁附着水既不，也不。放置：洗涤完的玻璃仪器应放在试管架上或指定的地方。5.物质的加热：（1）酒精灯的使用实验操作1-9：检：a.检查灯蕊是否平整；b.检查灯里是否有酒精（酒精不能超过酒精

21、灯容积的）。点：用火柴点燃，绝对禁止用燃着酒精灯引燃另一只酒精灯。熄：用盖灭，不可用嘴吹灭。火焰结构：酒精灯分为、三部分，其中外焰温度最高，应用加热。注意：碰倒酒精灯，万一洒出的酒精在桌上燃烧起来，应立即用扑盖。酒精添加：应借助。绝对禁止向燃着的酒精灯内添加酒精。（2）给物质加热 实验操作1-10：最常用的加热工具是。加热所用仪器：a.盛液体加热仪器：试管、烧瓶、烧杯、蒸发皿。b.盛固体加热仪器：试管、蒸发皿等。c.直接加热仪器：、燃烧匙。d.不能直接加热的仪器：、烧瓶。（需垫石棉网）e.不能加热仪器：、水槽、。加热操作及注意事项：a.玻璃仪器外壁有水，加热前先擦干再加热，以免容器炸裂。b.加

22、热时玻璃仪器底部不能接触灯芯，否则易破裂。c.烧的很热的玻璃仪器，不能立即用冷水冲洗，否则可能破裂。d.加热时应先要均匀加热，然后再集中加热，否则易破裂。e.给试管中的固体加热，试管口必须略微倾斜、防止产生的水倒流，试管破裂。f.给试管中的液体加热，液体不能超过试管容积的，试管倾斜（与桌面约成角），试管口不要对着自己或别人。g.试管夹夹持试管时，应打开试管夹，然后从试管的往上套，夹在试管的中上部。巩固练习：1.写出下列实验所需主要仪器的名称（只写一种）。（1）量取一定体积的液体_。（2）用作收集或贮存少量气体时需用_。（3）溶解较多量固体时应用_。（4）给物质加热时需用_。（5）少量试剂反应时

23、需用_。（6）将试管置于酒精灯上加热需用_。2.用容积为 30mL 的试管加热某种液体时，试管中液体的体积不超过_mL。3.关于药品的取用，不正确的操作是（）A.取用粉末状固体药品应用药匙 B.取用较大块或颗粒状固体药品用镊子 C.实验室没说明用量，一般液体取12mL，固体只要盖满试管底部D.从试剂瓶取出的溶液如果超出了需用量，应将超量的部分倒回原瓶内4.下列实验操作正确的是（）A.将实验室用剩的药品放回原瓶 B.把鼻孔凑近瓶口闻药品的气味C.将洗净的试管倒放在试管架上D.玻璃仪器外壁有水，加热前应擦干5.下列仪器不能作为反应容器的是（）A.试管 B.广口瓶 C.量筒 D.烧杯文档编码:CS2

24、M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3

25、U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8

26、Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y

27、5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO

28、5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M

29、3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档

30、编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O105/5 6.取 5mL 液体，应当选用（）A.托盘天平B.带刻度试管C.10mL 量筒 D.100mL 量筒7.用胶头滴管向试管里滴加液体的正确操作是（）A.滴管伸入试管竖直滴 B.滴

31、管位于试管口上方垂直滴加C.滴管口斜靠在试管壁滴加D.滴管水平向试管中滴加8.玻璃仪器洗净的标志是（）A.用热的纯碱溶液洗涤过B.用蒸馏水洗过多次C.洗涤后的仪器已经透明了D.仪器内壁的水附着均匀了9.振荡试管内的液体时，正确的操作是（）A.用手紧握试管，用臂晃动B.拇指堵住试管口，上下晃动C.用手捏住试管，用腕摇动D.手紧握试管，上下晃动10某同学用量筒量取液体，初次视线与凹液面最低处保持水平，读数为20mL，倒出部分液体后仰视读数为5mL，该同学倒出液体的实际体积为（）A大于 15mL B小于 15mL C等于 15mL D无法确定 11.将下列操作与操作中试管位置正确的用直线将它们连接起

32、来 12.能用酒精灯直接加热的玻璃仪器是（）A.蒸发皿 B.集气瓶 C.烧瓶 D.试管 13.用试管夹夹持试管的正确方法是（）（1）打开试管夹，从试管底部往上套，夹在试管中上部（2）打开试管夹，从试管口部往下套，夹在试管中上部（3）夹住后，拇指要放在短柄上（4）夹住后，拇指不要放在短柄上 A.（1）（4）B.（2）（4）C.（1）（2）（3）D.（1）（2）（3）（4）14.如右图所示是给试管中液体加热的操作，请指出并改正错误：（有5处错误）（1）；（2）；（3）；（4）；（5）；文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U

33、1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y

34、4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5

35、J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5

36、U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3

37、O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编

38、码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10文档编码:CS2M8I8Q3U1 HC8Y4T10Y5J4 ZO5U1Y6M3O10