課題一 地球

課題一 地球

7th - 9th Grade

20 Qs

quiz-placeholder

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課題一 地球

課題一 地球

Assessment

Quiz

Chemistry

7th - 9th Grade

Hard

Created by

Chemistry Aristo

Used 104+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪個危險警告標籤應貼在盛有氧的集氣瓶上?

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2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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下列哪個組合正確?

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3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪項正確描述在焰色試驗中物質產生的焰色?

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4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪項有關液態空氣的分餾的陳述正確?

A. 分餾過程利用空氣成分的密度差異,把它們分離出來。

B. 氮最先被沸騰出來,原因是它的沸點最低。

C. 在淨化空氣的過程中,會把經過濾的空氣冷卻至–80°C,以除去二氧化碳和氧。

D. 在空氣液化的過程中,會把經淨化的空氣重複壓縮和冷卻,直至温度降至–100°C。

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪幅圖正確顯示由元素和化合物組成的混合物的粒子排列方式?

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6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

某氣體不能使有餘燼的木條重燃,而它的沸點是–196°C。該氣體是甚麼?

A. 氧

B. 水蒸氣

C. 氮

D. 二氧化碳

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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電解海水的實驗裝置如圖所示。

盛載氣體XY的集氣瓶上分別應貼有甚麼危險警告標籤?

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