CHEMICAL FORMULA & EQUATIONS QUIZ
Quiz
•
Chemistry
•
10th - 11th Grade
•
Practice Problem
•
Hard
NORSIATI Moe
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given the formulae for calcium ion is Ca2+ and carbonate ion is CO32-. Choose the correct chemical formula of calcium carbonate.
Diberi formula ion kalsium ialah Ca2+ dan ion karbonat ialah CO32-. Pilih formula kimia yang betul bagi kalsium karbonat.
Ca(CO3)2
CaCO3
Ca2CO3
Ca3(CO3)2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following chemical formulae is correct?
Antara formula kimia berikut, yang manakah betul?
Li2O
KBr2
Al3Cl
MgNO3
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Table below shows the percentage by mass of each element in a compound and their relative atomic masses.
Jadual di bawah menunjukkan peratusan mengikut jisim bagi setiap unsur dalam satu sebatian dan juga jisim atom relatif masing-masing.
What is the empirical formula of the compound?
Apakah formula empirik untuk sebatian tersebut?
CHO
CHO2
CH2O
C2HO
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1.04 g of metal M react with 0.48 g of oxygen to form M oxide. Determine the empirical formula of M oxide.
1.04 g logam M bertindak balas dengan 0.48 g oksigen untuk membentuk oksida M. Tentukan formula empirik oksida M.
[ relative atomic mass : O = 16 ; M = 52 ]
MO
MO2
M2O3
M3O2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diagram below shows the set-up of apparatus to determine the empirical formula of magnesium oxide.
Rajah di bawah menunjukkan radas untuk menentukan formula empirik bagi magnesium oksida.
Which of the following statement is true for the lifting and closing of the lid quickly and occasionally during heating?
Antara pernyataan berikut yang manakah benar bagi penutup diangkat dan ditutup dengan cepat sekali sekala semasa pemanasan?
To avoid the pressure in the crucible dish
Untuk mengelak tekanan dalam mangkuku pijar
To avoid the crucible dish from cracking
Untuk mengelak mangkuk pijar dari retak
To avoid the white fumes from escaping
Untuk mengelak wasap putih daripada terbebas keluar
To avoid water vapour from entering the crucible dish
Untuk mengelak wap air daripada memasuki mangkuk pijar
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following equation represents a reaction.
Persamaan berikut mewakili satu tindak balas.
3H2 (g) + N2 (g) → 2NH3 (g)
What is the relative molecular mass of the product?
Apakah jisim molekul relatif bagi hasil tersebut?
[ Relative atomic mass : H=1 ; N=14 ]
[Jisim atom relatif : H=1 ; N=14 ]
2
17
28
34
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The following equation represents the combustion of methane.
Persamaan berikut mewakili pembakaran metana.
CH4 + 2O2 → CO2 + 2H2O
Calculate the volume of carbon dioxide formed at standard temperature and pressure if 3.2 g of methane is used.
Kira isipadu karbon dioksida yang terhasil pada suhu dan tekanan piawai jika 3.2 g metana digunakan.
(Relative atomic mass / Jisim atom relatif : H=1 , C=12 , O=16)
(Molar volume of gas at standard temperature and pressure / Isipadu molar gas pada suhu dan tekanan piawai = 22.4 dm3 mol-1)
4.48 dm3
2.24 dm3
1.63 dm3
1.12 dm3
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