圖示為等臂天平和上皿天平,則關於兩種天平的敘述,下列何者正確? (A) (B) (C) (D)。

質量的測量

Quiz
•
Chemistry, Science
•
7th - 9th Grade
•
Hard
阿弦校長 阿弦校長
Used 3+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
等臂天平指針左偏,表示左盤內物品質量較大
上皿天平指針右偏,表示右盤內物品質量較大
等臂天平稱量藥品時不需使用稱量紙
上皿天平附有一橫梁與騎碼
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
怡璇使用砝碼和上皿天平測量物體質量,當天平平衡時,右盤上的砝碼為:50g一個、20g兩個、1g三個;則此物體的質量應為多少g?
71
71.0
71.00
93
93.0
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
小謙使用天平稱量10克的粉末狀化學藥品時,下列哪些操作過程是不妥當的?[複選]
先放置稱量紙再將天平歸零
打開電風扇
直接將化學藥品放在秤盤上
用砝碼夾夾取砝碼放置在另一秤盤中央
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖,封閉錐形瓶內裝有高溫水蒸氣和少量的水,在天平上與砝碼平衡,經冷卻後部分水蒸氣凝結成水,試問天平的平衡情形為何?
錐形瓶端下傾
砝碼端下傾
仍維持平衡狀態
需視水量而定
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
同一物體質量在地面為A、在地心處為B、在月球表面為C,
則
A>B>C
C>A>B
A>C>B
A=B=C
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
凱凱以等臂天平稱量物體質量,他把物體置於右盤,並在右盤上放置50g砝碼1個、10 g 砝碼1個、1 g砝碼3個、100mg砝碼2個,並調整騎碼在第11個刻度上,則此物體質量測量值為若干?[填上數字即可]
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