
南一國中自然2下_ch4-3
Quiz
•
Science
•
8th Grade
•
Hard
南一 自然
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於催化劑對反應速率及化學平衡的影響,下列哪一項敘述正確?
催化劑能改變反應的平衡狀態
催化劑可改變反應速率,但不能改變平衡
催化劑因可改變反應速率,所以平衡也改變了
催化劑對反應速率及平衡根本沒有影響
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何種因素改變不會破壞化學反應的平衡?
催化劑
濃度
溫度
壓力
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個現象不屬於可逆反應?
飽和食鹽水中食鹽的溶解與析出
設計精準的溫度計內,酒精的汽化與液化
含水硫酸銅加熱產生無水硫酸銅與水
酒精燃燒產生二氧化碳與水
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列關於化學平衡的敘述,何者正確?
反應速率愈大的反應,愈容易達成平衡
反應達成平衡後,反應物濃度必等於產物濃度
化學平衡是指正、逆反應皆停止反應
飽和溶液中再加入溶質會產生新的平衡
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
化學反應達平衡時,下列說法何者錯誤?
反應物和生成物濃度保持相等
正反應速率等於逆反應速率
是一種動態平衡
反應需在定溫的密閉系統中
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水與水蒸氣若達到平衡狀態,不會有哪一現象發生?
水與水蒸氣同時存在
水會慢慢蒸發,直到完全變成水蒸氣
水蒸氣仍會持續凝結成水
水蒸發的速率=水蒸氣凝結的速率
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者能達成平衡狀態?
將貝殼放入盛有鹽酸的燒杯中
蠟燭在教室內燃燒
燒杯中水的蒸發
飽和食鹽水中加入食鹽
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