
10.什麼是化學平衡?
Interactive Video
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Chemistry
•
8th Grade
•
Practice Problem
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Medium
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影片比喻中的「手臂黏到另一人面上」代表什麼化學現象?
分子分裂
氧化作用
分子結合反應
催化作用
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在化學反應中,分子要以什麼條件互相作用才會發生反應?
只需要兩個分子互相靠近
需要足夠的能量但角度不重要
需要以適合的角度互相撞擊並有足夠的能量
只需要適合的角度
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根據影片內容,下列哪種說法最正確?
所有化學反應都只能單向進行
大部分化學反應可以雙向進行,如向前和向後
所有化學反應都可以逆轉,包括燃燒和爆炸
化學反應一旦開始就不能停止
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當化學反應達到平衡狀態時,下列哪個描述是正確的?
反應完全停止
只有前行反應在進行
前行和後行反應的速率相等,各形態的數量不再改變
所有分子都回到原始狀態
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
化學平衡被稱為什麼?
化學靜止
涅槃平衡
穩定點
分子均衡
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