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水和空氣

Authored by 梁淑儀 梁淑儀

Science

2nd Grade

Used 22+ times

水和空氣
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12 questions

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1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

以下哪些是空氣的特性?(答案可多於一個)

沒有固定形狀

有表面張力

看不見

可以產生壓力

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

香港主要食水除了來自水塘收集的雨水外,還有______。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

食水中的哪一種化學物料能夠幫助保護牙齒?

氯氣

氟化物

二氧化硫

明礬

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下哪一項是固態的水?

凍水

水蒸氣

口水

5.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

當水蒸氣遇冷,會凝成甚麼?

6.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

空氣中哪一種成份幫助人類維持生命?

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

燃燒需要空氣中的____。

二氧化碳

水分

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