112康軒5上自然Ch3
Authored by 張仁彥 張仁彥
Science
5th Grade
Used 5+ times
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氧氣是燃燒三要素中的可燃物。
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2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
空氣的組成有超過一半以上是氮氣。
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
接觸空氣的鐵製品，比沒有接觸空氣的鐵製品容易生鏽。
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鋼絲絨球在生鏽前後，外觀都沒有變化。
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5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在鐵生鏽的實驗中，浸泡過酸性水溶液的鋼絲絨球的生鏽速度，比浸泡過清水的鋼絲絨球快。
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用金針菇和雙氧水製造氧氣時，使用剪碎的新鮮金針菇，比用整把金針菇的效果好。
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7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因為電線走火容易引起火災，所以老舊的電線要盡快更換。
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