P4 水和空氣
Quiz
•
Biology
•
4th Grade
•
Practice Problem
•
Medium
Mona U
Used 3+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪種是水的氣態?
霜。
冰。
雪。
水蒸氣。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
冰凍汽水罐外的小水點是怎樣形成的?
水遇熱蒸發而成。
冰遇熱融化成水。
空氣中的水蒸氣遇冷凝結。
汽水罐面沾有水分。
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪些是水蒸氣的特性?(答案可多於一個。)
可以流動。
主要呈固態。
主要呈液態。
沒有固定形狀。
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪兩種氣體是空氣中的主要成分?
水蒸氣。
氮。
氯。
氧。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
燃燒時需要以下哪種氣體?
氧。
氮。
一氧化碳。
二氧化碳。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
石灰水遇到二氧化碳時,石灰水會有甚麼變化?
變得清澈。
變得混濁。
變成藍色。
沒有變化。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
我們可以在鐵的表面塗上甚麼以防止生銹?
水。
麪粉。
油漆。
洗潔精。
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