
生鏽與防腐是非題03
Authored by 勁男 李
Science
6th Grade
Used 3+ times

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51 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
媽媽在淡水買了真空包裝的鐵蛋,這是利用隔絕空氣來保存食物。
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
因為鋼棉比較細,所以若以鋼棉代替鐵片進行「水與酸性水溶液對鋼棉生鏽的影響」實驗,可以減少實驗時間。
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
除了實驗中的鋼棉會在教室內生鏽外,其他鐵製品都不會在教室內生鏽,例如:鐵釘。
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
騎完腳踏車,爸爸會擦拭腳踏車和幫腳踏車的鐵製鏈條上油,這樣不僅可以潤滑鐵製鏈條還可以達到防鏽的目的。
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
芒果盛產時,奶奶會將芒果晒乾,這是利用食物脫水使微生物不易生長的方式來保存食物。
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
常吃的零食—水果乾,是利用去除食物水分的方式來延長保存期限。
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
常可以在食品包裝裡看到有脫氧劑保鮮包,主要功能是減少包裝內的氧氣,讓黴菌不易生長。
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