[REVISION] BAB 3 KIMIA F4
Authored by NUR KPM-Guru
Chemistry
6th - 8th Grade
Used 6+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rajah menunjukkan formula kimia bagi kalium heksasianoferat(III) trihidrat.
Apakah jisim relatif sebatian ini?
[Jisim atom relatif : H =1; C= 12; N= 14; O= 16; K= 39; Fe = 56]
A - 141
B - 256
C - 389
D - 422
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berapakah jisim fosforus yang mengandungi dua kali ganda bilangan atom yang
terdapat dalam 14 g ferum?
[Jisim atom relatif : P =31; Fe = 56]
A - 62.0 g
B - 28.0 g
C - 15.5 g
D - 10.7 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jadual 1 menunjukkan formula kimia hasil pembakaran suatu unsur.
Jika 2 mol setiap unsur dibakar dalam oksigen secara lengkap, unsur yang manakah memerlukan isi padu oksigen yang paling kurang?
A - Kalium
B - Kalsium
C - Aluminium
D - Zink
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rajah menunjukkan dua balang gas yang diisi masing-masing dengan gas klorin dan oksigen masing-masing.
Antara berikut, pernyataan manakah benar tentang gas klorin dan oksigen dalam balang gas X dan Y?
[Jisim atom relatif : O = 16; Cl = 35.5]
A - Bilangan molekul gas dalam kedua-dua balang gas adalah sama.
B - Jarak di antara molekul dalam balang gas Y lebih besar daripada balang gas X.
C - Balang gas X mengandungi bilangan mol gas yag lebih tinggi.
D - Isi padu kedua-dua gas adalah sama.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu oksida ferum mempunyai formula FexOy. Apabila 4.80 g oksida ini bertindak balas dengan gas hidrogen, 3.36 g ferum terbentuk. Apakah nilai x dan y?
[Jisim atom relatif : O = 16; Fe = 56]
A - x = 1, y = 2
B - x = 1, y = 1
C - x = 2, y = 3
D - x = 3, y = 4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.16 g unsur W bertindak balas dengan 1.92 g oksigen untuk membentuk oksida logam W. Formula empirik bagi oksida logam ini ialah W2O3. Berapakah jisim atom relatif W?
[Jisim atom relatif : O = 16]
A - 27
B - 52
C - 56
D - 104
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