初一上册第1章 走入科學世界
Quiz
•
Science
•
7th - 9th Grade
•
Practice Problem
•
Hard
Teacher Lim
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25 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
浓硫酸 (H₂SO₄) 容器贴有上述显示的安全标志. 下列何者为该化学物质最为合适的储藏方式?
将其储藏在耐腐蚀的特制储藏箱中
将其储藏在通风柜(fume chamber) 中
将其储藏在不透明的容器中
将其储藏在冷冻柜中
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列何者不为化学实验室的安全禁忌?
将瓶装水带入实验室中,方便解渴
擅自进入实验室和同学老师们打招呼
擅自更改实验步骤,以加快实验的进展
进行实验前,检查仪器是否损坏
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列安全标识中,何者在人体长时间曝露下,极有可能会诱发癌症的病变.
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
钾 (Potassium) ,钠 (Natrium) 及 锂 (Lithium) 此类活泼金属具有爆炸性, 应将其存放在 ____ 中,以确保安全性.
水
甘油
肥皂水
粉尘
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列化学试剂中,哪个具有以上的安全标识?
三氧化二砷 Arsenic trioxide (As2O3)
酒精/乙醇 Ethanol (C2H5OH)
水 Water (H2O)
乙酸 ethanoic acid (CH3COOH)
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
方睿斌进行一项实验, 其实验中必须将不溶于水的固体与水分离,须使用过滤纸, 下列器具中何者为方睿斌最为所需?
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
为什么在实验室用生火加热时必须铺设石棉铁丝网?
让火焰分散到容器各个角落,均匀受热,使容器不易爆裂
因实验室中大多器皿不耐高温,石棉铁丝可网降低火焰温度
避免火焰受风力影响而偏折,让火焰更集中在容器底部
石棉铁丝网可吸收部分热能, 三脚架不易过度膨胀而变形受损
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