
南一國中自然2下_ch4-1

Quiz
•
Science
•
8th Grade
•
Medium
南一 自然
Used 10+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
欲使鐵生鏽的速率加快,下列哪一種方法有效?
保存在室溫以下的溫度
將鐵放在乾燥的空氣中
將鐵塗上油漆
將鐵削成細絲
2.
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
大理石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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
奶奶燒香拜拜時,將紙錢攤開燒會比整疊燒得快,這是合乎影響反應速率的變因中之哪一項因素?
濃度
接觸面積
溫度
催化劑
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在童軍課時,我們會將竹筷削成火煤棒,比較容易燃燒。下列何者與此原理最接近?
黃金不易生鏽,常被製成飾品
鐵粉較鐵塊容易氧化
藍墨水在熱水中擴散較快
利用二氧化錳來使氧氣的生成加速
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿超生病吃藥時,將藥丸研磨成粉末再以開水服用,這是合乎影響反應速率的變因中之哪一項因素?
濃度大,藥效快
增加總接觸面積,藥效快
溫度高,藥效快
以上皆是
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
溶液加以攪拌,發現可增加其反應速率,主要的原因是:
碰撞機會增加
使反應溫度平均
可使溶液中的溶質分散均勻
碰撞機會減少
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
爆竹工廠儲存大量乾燥粉狀可燃物,常有爆炸的危險,其理由與下列何因素有關?
乾燥粉太乾
乾燥粉顆粒細,接觸表面積大
乾燥粉的活性大
濃度大
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