八下CH1：化學反應(守恆&計量)
8th Grade
•25 Qs
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八下CH1：化學反應(守恆&計量)
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
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25 questions
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1.
MATCH QUESTION
1 min • 1 pt
請將下列化學變化的反應物與產物正確配對
放熱發光
產生沉澱
產生氣體
放熱變色
2.
DRAG AND DROP QUESTION
1 min • 1 pt
碳酸鈉與氯化鈣反應，可生成 (a) 與白色沉澱物 (b)
3.
DRAG AND DROP QUESTION
1 min • 1 pt
大理岩的主要成分為 (a) ，與鹽酸反應後可生成 (b) 、 水 與 (c) 氣體
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
在開放系統中進行實驗，下列哪些反應會觀察到總重量減少的現象？(多選題)
碳酸鈉+氯化鈣
鹽酸+碳酸鈣
燃燒鋼絲絨
金屬生鏽
燃燒棉花的灰燼
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列哪些反應遵守「質量守恆定律」？(多選題)
碳酸鈉+氯化鈣
鹽酸+碳酸鈣
燃燒鋼絲絨
金屬生鏽
燃燒棉花的灰燼
6.
DRAG AND DROP QUESTION
1 min • 1 pt
法國科學家 (a) 經過一連串的實驗後，才得到「密閉環境下，化學反應前、後總質量不變」的結果，稱為 (b) 定律
7.
DRAG AND DROP QUESTION
1 min • 1 pt
鐵的燃燒反應可寫為：「鐵＋氧氣→ (a) 」。
若取22.4公克的鐵在空氣中燃燒後，生成產物32.0公克，則參與反應的氧氣有 (b) 。
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