
八下自然CH3-2~CH4-2複習
Authored by 林 炳弘
Science
8th Grade
Used 6+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
燒杯中盛有 0.1 M 稀鹽酸 100 mL,若在燒杯中逐漸滴入 0.1 M 氫氧化鈉水溶液 100 mL,則有關燒杯中水溶液的氫離子濃度變化的敘述,下列何者正確?
氫離子濃度漸增
氫離子濃度漸減
氫離子濃度先增後減
氫離子濃度先減後增
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
25℃時,NaCl溶液的濃度為0.1M,其pH值為多少?
0
1
2
7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氮氣與氫氣在高溫、高壓下製氨的化學反應為一可逆反應,其反應式如圖所示,當反應達平衡後,下列哪一項方法無法改變原平衡狀態?
增加氮氣與氫氣的濃度
增加催化劑的量
增高溫度
降低溫度
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當可逆反應達成平衡狀態時,下列敘述何者正確?
反應物不再轉變成生成物
反應速率為零
反應物濃度等於生成物濃度
正、逆反應速率相等
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有三種不同的液體,甲為10mL的蒸餾水,乙為20mL的小蘇打水,丙為30mL的檸檬汁。下列何者最適合表示三種液體的性質?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者是因為反應物的接觸面積大,而使反應速率加快的實例?
夏季的食物較易腐爛
鈉比銅更容易在空氣中燃燒
大理岩在濃鹽酸中冒泡更快
將化學藥品研磨成粉末反應速率更快
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若濃度均為0.1M的500mL水溶液,下列哪一杯水溶液所解離的粒子總數最多?
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