
107-2國二理化一段習作練習
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
唐碩振 唐碩振
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53 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
甲、乙、丙、丁為四種不同之純物質,將10克甲與6克乙反應後,已知生成8克丙與X克丁,且尚有1克的甲並未反應,則X應為多少?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小南將碳酸鈉、鹽酸兩種溶液放在錐形瓶中,溶液混合後產生氣體。他發現反應結束後質量變輕了,因此提出:「質量守恆定律在本實驗不成立。」他的結論是否正確?哪一個原因最合理?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
設X、Y、Z分別代表三種相異之元素,2甲+2Y→2X2Y+Z2為已均衡的化學反應式,依據道耳頓之原子說,甲的化學式為下列何者?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
碳酸氫鈉粉末加熱時,產生二氧化碳、碳酸鈉及水的反應式為 wNaHCO3→xCO2+yNa2CO3+zH2O,平衡反應式使係數為最簡單整數,此時 w+x+y+z 總和為下列何者?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列物質何者的莫耳數最大?(原子量:C=12、H=1、O=16、Ca=40、Na=23)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氧氣分子量為32,下列敘述何者正確?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關甲烷(CH4)和水(H2O)的敘述,何者正確?(C=12,H=1,O=16)
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