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chem is try 大氣

Authored by Hon Lau

Chemistry

9th - 12th Grade

Used 1+ times

chem is try 大氣
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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什麼使這張氯化鈷(II) 試紙( cobalt (II ) chloride) 由藍色變成粉紅色?

石蠟油

純酒精

檸檬酸粉末

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

下列哪一種氣體,不助燃也不自燃,可以用來滅火?

氫氣

空氣

二氧化碳

氧氣

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

純淨氧氣可以用___的木條測試,它可以使木條重燃。

4.

OPEN ENDED QUESTION

3 mins • 1 pt

請寫出大氣中三種主要氣體的名稱。

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5.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

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