八下:有機化合物的定義與分類
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各元素中,何者為組成有機化合物必要的元素?
O
C
H
N
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列含碳化合物中,哪些屬於有機化合物?(多選)
Na2CO3
CO
CH4
CH3COOH
C2H5OH
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
沛沛將麵粉裝入蒸發皿,用漏斗蓋住,進行加熱的實驗
請問加熱麵粉時,為什麼要注意避免揚起粉塵?
為了防止加熱不均勻
為了防止遮蔽視線
為了防止粉塵燃燒
為了加速反應
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
沛沛分別將白砂糖、食鹽與麵粉裝入蒸發皿進行加熱,
結果發現白砂糖與麵粉加熱後產生黑色物質,食鹽則沒有明顯變化,
根據結果,請問下列哪些物質屬於有機化合物?(多選)
白砂糖
食鹽
麵粉
全都不是
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列哪一項因素會影響有機化合物的性質?(多選)
組成元素的種類
組成的原子個數
組成原子的排列方式
組成元素的來源
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
醇和有機酸混合加熱發生酯化的反應速率很慢,
通常會加入下列哪一種物質當作催化劑?
乙醇
乙酸
濃硫酸
氫氧化鈉
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
丙酸和乙醇反應產生的酯稱為什麼?
乙酸乙酯
乙酸丙酯
丙酸丙酯
丙酸乙酯
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