水和空氣
Quiz
•
Science
•
2nd Grade
•
Practice Problem
•
Hard
梁淑儀 梁淑儀
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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？
雪
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
氧
氮
水分
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