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112康軒5上自然Ch3

Authored by 張仁彥 張仁彥

Science

5th Grade

Used 5+ times

112康軒5上自然Ch3
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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。

×

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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