
113-8下自習ch4
Authored by 林 炳弘
Science
8th Grade
Used 6+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為小樺與媽媽某一天在牛排館用餐的對話,圖中小樺的敘述「……」最可能是下列何者?
酸鹼中和實驗中會加入廣用試劑
製造肥皂實驗中會加入氫氧化鈉
雙氧水製造氧氣實驗中會加入二氧化錳
碳酸鈣製造二氧化碳實驗中會加入鹽酸
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?
夏季的食物較易腐壞
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
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
反應速率等於零
反應物濃度等於生成物濃度
正、逆反應速率相等
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氨氣與氫氣在高溫、高壓下製氨的化學反應為一可逆反應,其反應式如下所示,當反應達平衡後,下列哪一項方法無法改變平衡狀態?
增加氨氣與氫氣的濃度
增加催化劑的量
增高溫度
降低溫度
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
野外露營處是靠活動時,火媒棒常是生火必備的物品之一。將先洗淨剝成樹枝,在火種微弱或是火已難點時,仍然能快速點燃柴火,是一種較快速的野外生火方式。關於將先洗成「削成樹枝狀」的動作,主要是考慮下列何種影響反應速率的因素?
溫度
催化劑
物質本質
接觸面積
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
牛奶在冰箱可以保存較久,但在室溫下卻容易腐敗,主要是受什麼因素影響?
溫度
物質本性
催化劑
顆粒大小
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在大木塊與碎木片質量相等的情況下,下列哪一情況的反應速率最快?
大木塊在空氣中燃燒
碎木片在空氣中燃燒
大木塊在純氧中燃燒
碎木片在純氧中燃燒
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