
5-2
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
蔡忠義 蔡忠義
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一般狀態下,酯化反應速率很慢,為了加速反應的進行,通常會加入何種物質作為催化劑?
食鹽
二氧化錳
酒精
濃硫酸
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者不是有機酸類所具備的特性?
含-COOH原子團
組成元素為C、H、O
在水中可以解離出OH-
水溶液呈酸性
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者為醇類所具備的特性?
含有-COOH原子團
組成元素僅為C、H
在水中可以解離出OH-
水溶液呈中性
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關酯化反應的敘述,下列哪一項是錯誤的?
以鹽酸代替硫酸的效果會更好
酯類在水中通常會上浮
酯類不溶於水
需要有機酸與醇類共同反應方能完成
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
日常生活中,天然氣、石油是和我們密不可分的有機物質,有關這兩者的敘述,下列何者正確?
家庭使用的「瓦斯桶」,其裡面裝的是天然氣
天然氣的主要成分為丙烷
汽機車所加的各種汽油是石油提煉出的產品
石油直接汽化後,即為「瓦斯桶」內所裝的燃料
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者不是烴類的性質?
易溶於水
碳數少的烴在常溫時大多數是氣體
碳數多的烴在常溫時大都是液體,甚至是固體
在空氣中完全燃燒的產物為CO2和H2O
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關天然氣與液化石油氣的比較,下列何者正確?
天然氣屬於純物質,而液化石油氣屬於混合物
天然氣主要成分為CH4,而液化石油氣的主要成分是C2H6
石油及天然氣的成因是遠古時期的動、植物死亡後,與泥沙沉積於地底,經由細菌及溫度、壓力的作用,而漸漸分解形成的
天然氣一般都被壓縮成液態,裝在鋼筒中運送,而液化石油氣則是由管線送到家庭使用
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