六年級自然-ch2防鏽與防腐
Quiz
•
Science
•
6th Grade
•
Practice Problem
•
Medium
陳文珮 陳文珮
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將鋼棉放入哪種水溶液中,再拿出後會最快生鏽?
純水
酸性水溶液
沙拉油
油漆
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
語辰將泡過酸性水溶液的鋼棉塞在廣口瓶底部後,將廣口瓶倒放在裝有染色水的培養皿中,一段時間後,不會觀察到什麼現象?
鋼棉生鏽
鋼棉顏色改變
廣口瓶內的水位上升
廣口瓶內的空氣顏色改變
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
浸過酸性水溶液的鋼棉塞在廣口瓶底部後,再把培養皿蓋在廣口瓶上。等鋼棉生鏽後,于程將點燃的蠟燭移入廣口瓶內,會發生什麼情形?
沒有變化
鋼棉起火燃燒
燭火熄滅
燭火燃燒得更旺盛
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
寵恩將兩塊相同的鋼棉一塊沾水、一塊沾酸性水溶液後,分別放入夾鏈袋中,一段時間後,再觀察鋼棉的變化。請問寵恩的實驗目的應該是什麼?
了解乾燥與潮溼環境對鋼棉生鏽的影響
了解鋼棉生鏽是否需要接觸空氣
了解水與酸性水溶液對鋼棉生鏽的影響
了解鋼棉生鏽時會產生哪一種氣體
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果今天的實驗是要進行「空氣對鋼棉生鏽的影響」,下列哪一項因素是操縱變因?
實驗進行的時間長短
實驗進行的天氣狀況
是否接觸空氣
鋼棉的大小
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
意慈想買一盒迴紋針,為了避免買到的迴紋針很快就生鏽,於是她選擇了包有塑膠套產品。請問他的選擇正確嗎?
正確,因為塑膠套可以隔絕造成生鏽的因素
正確,因為塑膠套會抑制造成生鏽的細菌生長
不正確,套了塑膠套反而更容易生鏽
不正確,因為塑膠套只有讓迴紋針變漂亮的功能而已
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
「政哲將刀片擦乾,並放在黑暗的真空罐中」,這句話顯示政哲的防鏽方式是什麼?
增加表面的水分
減少表面與空氣的接觸
隔絕表面的水及空氣
避免接觸光線
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