
八年級下學期L4GPT
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
傑元 鄭
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不會改變化學反應的速率?
(A) 溫度
(B) 反應物濃度
(C) 壓力
(D) 產物顏色
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一種方法可以加快鐵釘生鏽的速率?
(A) 將其密封在乾燥瓶中
(B) 浸泡在油中
(C) 放在潮濕含鹽的空氣中
(D) 覆蓋保鮮膜
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將相同體積的鹽酸倒入兩個燒杯中,一個加入整塊鋅片,另一個加入粉末鋅,哪一個反應較快?
(A) 整塊鋅片
(B) 粉末鋅
(C) 一樣快
(D) 無法比較
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
增加反應速率的催化劑,其作用是:
(A) 改變反應物濃度
(B) 增加生成物
(C) 降低反應所需的活化能
(D) 改變產物的種類
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水加熱後產生氣泡的速率變快,是因為:
(A) 增加濃度
(B) 增加溫度
(C) 使用催化劑
(D) 減少壓力
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
磷點火的速度比木材快,主要原因是:
(A) 木材含水量較多
(B) 木材分子較活躍
(C) 磷與氧氣反應速率較快
(D) 木材不易與氧氣反應
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個不屬於影響反應速率的因素?
(A) 壓力
(B) 觸媒
(C) 容器形狀
(D) 溫度
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