
5-3+5-4清潔劑與聚合物
Quiz
•
Chemistry
•
8th - 9th Grade
•
Practice Problem
•
Medium
林美淑 林美淑
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10 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
製造肥皂時,為了要讓脂肪溶解並使反應速率加快,通常會加入下列何種物質?
濃食鹽水
水
酒精
硫酸
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
益瑋想要自己作肥皂,下列原料中,真正參與反應的是哪兩種物質?甲.食鹽水;乙.硫酸;丙.椰子油;丁.過氧化氫;戊.酒精;己.氫氧化鈉。
乙戊
丙戊
丙丁
丙己
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
將沙拉油與水置入試管中並加入肥皂後,用玻璃棒攪拌,然後放置一段時間,下列何者是試管內正確的分布?
油在上 水在下 界線分明
油在下 水在上 界線分明
油被水包覆在試管中間
油水互溶界線不分明
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
下列何種有機物質的分子最小?
酒精
澱粉
纖維素
蔗糖
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
醣類為碳氫氧三種元素組成的化合物,為何又稱為碳水化合物主要是因為其分子式內的氫、氧比例為何?
1:2
2:1
1:3
3:1
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
保鮮膜在加熱後會變得較軟且可塑性也提高了?主要是因為
保鮮膜為動物性脂肪所構成。
保鮮膜由纖維素構成
進行氧化作用,分解了保鮮膜
保鮮膜是熱塑性聚合物
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
利用飽和食鹽水將肥皂與甘油分離的方法稱為?
鹽析
分餾
蒸發
結晶
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