八下自然5-2
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
部分水果花草具有特殊香味,是源於下列哪一種有機物?
醋酸
酒精
酯類
醣類
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列敘述何者不是烴類的性質?
易溶於水
碳數少的烴在常溫常壓時大多數是氣體
碳數多的烴在常溫常壓時大都是液體,甚至是固體
在空氣中完全燃燒的產物為CO2和H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
天然氣的主要成分為下列何種化合物?
甲烷
乙烷
丙烷
己烷
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某分子的結構模型如附圖所示,圖中黑球表碳原子,白球表氫原子。下列有關此分子的敘述,何者錯誤?
此分子是有機化合物
此分子的分子式是C3H8
此分子在常溫常壓下是液體
此分子是液化石油氣的主要成分
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
取2mL的乙醇和2mL的冰醋酸(100%乙酸)共置於一支試管中,並加入數滴濃硫酸後,將試管浸於盛有熱水的燒杯中,加熱10分鐘且不停的攪拌,如附圖所示。請問試管中會產生下列何種現象?
管內有大量氣泡生成
管底有白色沉澱物生成
管口有水果香味產生
溶液顏色由透明無色變為紅色
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關乙醇的敘述,下列何者錯誤?
是紅色液體,容易燃燒
工業用酒精會加入有毒的甲醇
實驗室中常用來當作燃料
75%的乙醇,殺菌效果比純乙醇好
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
被螞蟻咬到後皮膚會紅腫,此種引起皮膚紅腫物質的化學式為何?
C2H5OH
C3H8
HCOOH
CH3COOH
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