八下第一章化學反應

Quiz
•
Chemistry
•
8th - 12th Grade
•
Hard
JOESPH HSU
Used 9+ times
FREE Resource
21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氯化鈣與碳酸鈉混合的實驗中,將氯化鈣與碳酸鈉混合後,所產生之沉澱物為何種顏色?
黃色
藍色
粉紅色
白色
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A物質 8公克與B物質 20公克反應,其反應式為 2 A+B → 3 C+D,反應後產生D物質 10公克,剩下A物質 1公克,則請問產生C物質為若干公克?
14
17
18
20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列化學反應平衡式的寫法,何者正確?
2H2O2+MnO2→2H2O+O2
Mg+O2→MgO2
CaCO3+HCl→CaCl2+CO2+H2O
4Na+O2→2Na2O
4.
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?
XZ
XYZ2
X2Z
Y2Z2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知氯化鈣水溶液與硫酸鈉水溶液的化學反應式如右:CaCl2+Na2 SO4 → CaSO4+NaCl(係數未平衡),則係數平衡後,其係數總和為多少?
4
5
6
7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
22克的二氧化碳氣體中,下列何項正確?(C=12,O=16)
共有6×1023個分子
含有3×1023個氧原子
含有6×1023個碳原子
共有9×1023個原子
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者質量最大?(原子量:H=1,O=16)
0.4莫耳氧氣分子
3×1023個氧原子
9公克水
6×1022個水分子
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