物質是由分子組成的,分子又是由 組成的。

初二物理下學期概念測驗

Quiz
•
Physics
•
8th Grade
•
Hard
philip2005 pang
FREE Resource
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109 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
物體中所含 物質 的多少叫做物體的質量。一個物體的質量不隨物體的 、 和溫度而變化。
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
托盤天秤測物體質量時,如果砝碼已經磨損掉了,則測得的結果將比真實值 ;如果砝碼上沾上了污物,則測得的結果將比真實值 。(填"偏大"或"偏小")
偏大
偏小
4.
OPEN ENDED QUESTION
3 mins • 1 pt
在實驗室裡用 測物體的質量,當用它稱物體質量時,若把一隻最小的砝碼加入右盤時嫌多,而取出這只最小的砝碼又嫌少,這時應通過___________使天平平衡,從而稱出物體的質量。
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
使用托盤天秤時,先要調節天平,天平調節分兩步: (1)先把天平放在 上,把遊碼放在尺規左端的 處。 (2)調節橫樑右端的 ,使指針指在分度盤的 處,這時橫樑平衡。
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
___________的某種物質的質量,叫做___________物質的密度,不同物質的密度______________。
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
在相同的體積下,不同的物質的質量是不同的,物質的這種特性,用________這個物理量來表示。
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