第5章5-4清潔劑(翰林版)
Quiz
•
Science
•
8th - 9th Grade
•
Practice Problem
•
Medium
嚴老師 嚴老師
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8 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
為何肥皂製作實驗時要加入乙醇?
幫助氫氧化鈉溶解於椰子油中
當作催化劑加速反應
參與反應
肥皂才會具有酒的味道
2.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
製作肥皂的化學反應稱為什麼?
酯化反應
加成反應
中和反應
皂化反應
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列哪些物品可以相互作用,製成肥皂
椰子油,NaOH
葵花油,C2H5OH
機油,NaOH
汽油,C2H5OH
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
有關清潔劑的敘述何者正確?
肥皂和合成清潔劑都是石油化學產物
肥皂的去汙作用是靠親水性端吸附油脂後再由親油性端帶入水中
肥皂與合成清潔劑兩者的去污原理不同
肥皂與合成清潔劑兩者的去污原理相同
5.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
以玻棒沾取少許蒸發皿中的肥皂水於石蕊試紙上,觀察試紙的顏色變化和酸鹼性
藍色石蕊試紙呈藍色,中性
藍色石蕊試紙呈紅色,酸性
紅色石蕊試紙呈藍色,酸性
紅色石蕊試紙呈藍色,鹼性
6.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
為何將製造肥皂反應後的產物倒入飽和食鹽水後,會有白色肥皂固體浮出液面?
肥皂容易溶於飽和食鹽水
肥皂的密度比飽和食鹽水大
肥皂不易溶於飽和食鹽水
肥皂的密度和飽和食鹽水的密度一樣大
7.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
沙拉油和水可以互溶嗎?加入白色肥皂固體後蓋緊瓶蓋後,搖多次的結果又是如何呢?
沙拉油和水可以互溶,只看見一層油水溶液
加入白色肥皂固體後,可發現油和水仍是兩層界線明顯
加入白色肥皂固體後,可發現充滿白色泡沬
沙拉油和水不互溶,水在上層,油在下層
8.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
在鈣、鎂離子含量較高的海水或硬水中,使用肥皂和合成清潔劑(沐浴乳..)哪個去污效果比較好?
肥皂
沐浴乳
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