
Kimia utk Gizi 2
Quiz
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Chemistry
•
University
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Practice Problem
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Medium
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam sistem tertutup, massa total dari zat sebelum dan sesudah reaksi kimia adalah:
Lebih besar setelah reaksi
Lebih kecil setelah reaksi
Tetap konstan
Hanya berubah pada reaksi nuklir
Bergantung pada jenis reaksi
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi berikut termasuk jenis reaksi sintesis, kecuali:
2H₂ + O₂ → 2H₂O
N₂ + 3H₂ → 2NH₃
2Na + Cl₂ → 2NaCl
CaCO₃ → CaO + CO₂
Fe + S → FeS
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam reaksi berikut, 2H₂ + O₂ → 2H₂O, H₂ dan O₂ berfungsi sebagai
Produk
Reaktan
Katalis
Endapan
Larutan
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur yang selalu mengalami oksidasi dalam reaksi redoks adalah unsur yang
Kehilangan elektron
Menerima elektron
Tidak berubah
Menghasilkan proton
Menyerap cahaya
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Manakah dari berikut yang merupakan contoh dari larutan homogen?
Campuran air dan pasir
Campuran minyak dan air
Larutan gula dalam air
Campuran serbuk besi dan belerang
Campuran tepung dan air
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam sebuah reaksi kimia (sistem tertutup) antara 10 gram magnesium (Mg) dengan 5 gram oksigen (O₂) terbentuk magnesium oksida (MgO). Berapakah massa magnesium oksida yang terbentuk?
5 gram
10 gram
15 gram
20 gram
25 gram
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam suatu reaksi sistem tertutup, 18 gram air (H2O) diuraikan menjadi 16 gram oksigen dan berapa gram hidrogen?
1 gram
2 gram
18 gram
16 gram
32 gram
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