國二理化 5-3~5-4 小考20題 0525
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Science
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8th Grade
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Medium
Chiu Henry
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一種塑膠受熱後不會軟化變形?而且會越...............熱..........越~~~~硬
環氧樹酯
壓克力
聚乙烯
寶特瓶
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
品萱大美女在吃飯時,如果把飯粒咀嚼得較久,會感到甜味,這是因為飯中所含的何種聚合物被唾液水解成麥芽糖的緣故?
蛋白質
脂肪
澱粉
維生素
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
附圖為合成聚合物的結構示意圖,而保鮮膜的分子排列方式,應為哪一圖形?
甲
乙
甲與乙都有可能
甲與乙都不是
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個不是天然聚合物?
耐綸
澱粉
蛋白質
纖維素
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關醣類的敘述,下列何者錯誤?
可由綠色植物經由光合作用製造
由碳、氫、氧三種元素所構成
又稱為碳水化合物
葡萄糖、澱粉屬於醣類,纖維素則不屬於醣類
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
葡萄糖、澱粉與纖維素等都是由下列哪三種元素構成?
碳、硫、氮
碳、硫、氧
碳、氫、氧
氫、氧、氮
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
有關聚合物回收再利用的敘述,下列何者錯誤?
寶特瓶遇熱會軟化變形,是一種熱塑性聚合物,可以回收再製
輪胎遇熱不會軟化變形,是一種熱固性聚合物,無法回收再製
聚乙烯遇熱會軟化變形,是一種熱固性聚合物,無法回收再製
酚醛樹脂無法回收再製,因為其是一種熱固性聚合物
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