
國中自然2上ch6-5分子與化學式
Authored by 翰林出版國中自然 翰林出版國中自然
Biology
8th Grade
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
甲、乙、丙、丁各物質,其組成粒子如圖所示,下列何者屬於元素?
乙
丙
甲、丁
乙、丙
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
有關化學式的寫法,下列何者錯誤?
氧化物中的氧寫在右邊
金屬化合物中金屬放右邊
正、負原子價必須相等
有機化合物碳、氫、氧的排列順序中,碳排在最左邊
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Na2Cl、KNO3、MnO2、Ca2CO3、HO2;以上5個化學式中,寫錯的有幾個呢?
1 個
2 個
3 個
4 個
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
下列哪一物質不是元素?
水
氧
鈉
氦
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
關於元素和化合物的敘述,下列何者錯誤?
元素具有固定的性質
化合物不能用物理方法分解為更簡單的物質
食鹽是一種化合物
化合物由兩種以上的元素組成,故無一定的性質
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
三個氧原子組成一個臭氧分子,則一個臭氧分子可以如何表示?
O3
3O
3O2
6O
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
下列哪一個屬於單原子氣體?
氦
氫
氧
氮
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