
八下自然5-2
Authored by 白 皮
Science
8th Grade
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17 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下關於醇類的敘述,何者為非?
乙醇可以當作燃料、溶劑及消毒劑
螞蟻叮咬時會分泌甲醇,使人皮膚紅、腫、癢
變性酒精是加入有毒甲醇的溶液
可以用酵母菌將醣類發酵製成乙醇
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小當家在中國到處學習、修行,想要追尋能做出好菜的竅門,某天他得到十全大師的指點,十全大師告訴他在炒菜時先加一些老酒,再放些醋,如此一來,菜就會香噴噴了。小當家依循著十全大師的指導,果然做出了好菜。請問這是因為酒和醋在熱鍋中反應產生了下列哪一類有機化合物所致?
醇類
酸類
烷類
酯類
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我們之所以可以聞到花果的香味,主要是因為花果中含有下列哪一種物質的緣故?
酯類
醇類
有機酸類
烴類
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
大陸 雲南地區的少數民族,會抓螞蟻來製作類似食用醋的調味料,這是因為螞蟻體內含有哪一種有機酸的成分?
碳酸
甲酸
乙酸
醋酸
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關酸類的敘述,下列何者錯誤?
醋酸是有機酸,溶於水後呈酸性
被螞蟻咬後會有刺痛感,是因為螞蟻會分泌乙酸的緣故
被蜜蜂叮螫時,蜜蜂分泌的甲酸會使皮膚紅腫
醋酸可用來製造染料、藥品及布料
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
丁醇和乙醚的分子式同為C4H10O但卻有著不同的化學性質,主要原因為何?
發現時間不同
原子排列方式不同
分子排列方式不同
名稱不同
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關酯類的敘述,下列何者錯誤?
小分子酯類具有香味
通常密度比水小
醇類和有機酸反應會產生酯和水
易溶於水中
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