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7.1 空氣

Authored by Tsang (TSY)

Science

7th Grade

Used 12+ times

7.1 空氣
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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

空氣中成份佔最多的氣體是?

氮 Nitrogen

氧 Oxygen

二氧化碳 Carbon Dioxide

水氣 Water Vapour

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

氧氣佔空氣的

不定量

78%

21%

0.04%

3.

OPEN ENDED QUESTION

5 mins • Ungraded

寫出其中一種檢測二氧化碳的方法。

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4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

以上是某氣體的檢測結果,這氣體是:

水汽

二氧化碳

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

哪一個不是二氧化碳的特性?

助燃

無色無味

密度比空氣高

在-78°C 會直接由固態轉變成氣態

6.

OPEN ENDED QUESTION

5 mins • Ungraded

舉出氧在日常生活中的一項用途。

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