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111康軒5下自然2

Authored by 張仁彥 張仁彥

Science

5th Grade

Used 19+ times

111康軒5下自然2
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60 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

假如鐵製品生鏽了,用水沖一沖就會光亮如新。

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2.

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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3.

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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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

空氣中的二氧化碳無法幫助生物呼吸,所以我們不需要二氧化碳。

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5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

「蠟燭、氧氣、點火」是蠟燭燃燒的三個條件,只要缺少其中一個條件,蠟燭就無法燃燒。

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

打開汽水瓶蓋時,會有氣體衝出來,那是溶解在汽水中的氧氣。

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7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

空氣中有氧氣,所以蠟燭可以在空氣中燃燒。

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