
107G5030304
Authored by Black David
Chemistry
5th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將接有電池和發光二極體的導線兩端放入小蘇打水中,因為小蘇打水容易導電,所以發光二極體會發亮。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
連接發光二極體時,長的一端必須與電池的正極接出來的電線相連接,短的一端再與負極相接,形成通路後,發光二極體才會發亮。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大部分的水溶液不容易導電,所以洗澡後光腳在浴室使用吹風機是安全的。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
經過水溶液的導電性實驗之後,我們知道酸性水溶液和鹼性水溶液都容易導電,而中性水溶液則無法導電。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
廁所清潔劑的水溶液經過石蕊試紙檢驗之後呈現酸性,由此判斷,廁所清潔劑水溶液應該容易導電。
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小嘉將電池和電線連接發光二極體,形成通路時,如果將下列哪一項物品連接在原本的通路中,發光二極體就不容易亮?
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小美將電池和電線連接發光二極體,形成通路時,如果將下列哪一項物品接在原本的通路之中,發光二極體仍會持續發亮?
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