
0812曙光國三週考4-1~4-2
Quiz
•
Chemistry, Science
•
9th Grade
•
Practice Problem
•
Medium
何 玄
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13 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
許多化學反應進行時,需要加入催化劑以加快反應速率,下列有關催化劑的敘述,何者正確?
化學反應中,催化劑也是反應物之一
反應完成後,催化劑的質量不變
催化劑可使原本不反應的物質,發生化學反應
可改變生成物的總量
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
有關催化劑的敘述,下列何者錯誤?
可以改變反應速率
既不是反應物也不是生成物
生物體的酶或酵素是作為催化劑使用
反應後催化劑因為消耗,所以質量減少
3.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
某一立方體,邊長4 cm,原本參與某反應時需40秒才能完成,若將其切成每邊1 cm之立方體,在相同條件下參與同一反應,如果反應速率和表面積成正比,問此時需幾秒才能完成反應?
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
下列何者屬於「可逆反應」?
鐵生鏽
氫氧化鈉與鹽酸反應產生水
燃燒紙錢
氯化亞鈷遇水變成粉紅色
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
對一個已達到平衡的化學反應而言,下列敘述何者正確?
正反應與逆反應均已經停止
反應物與生成物的莫耳數相等
正反應速率大於逆反應速率
反應物與生成物的濃度維持不變
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
下列何者不屬於「動態平衡」的種類?
化學平衡
密閉系統內,水的三態變化
燃燒反應
溶解平衡
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
若裝有水的密閉容器已達平衡,則有關水分子與水蒸氣分子關係的敘述,下列何者正確?
水分子與水蒸氣分子的數量相等
水分子蒸發和水蒸氣分子凝結的速率相等
水分子與水蒸氣分子的組成原子不同
水分子與水蒸氣分子占有的體積相同
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