
KIMIA UNSUR
Authored by Yudiarsih Zahirah
Chemistry
3rd Grade
Used 397+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diantara gas mulia di bawah ini yang senyawanya paling banyak disintesis adalah …….
He
Ne
Ar
Xe
Kr
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diantara gas mulia di bawah ini yang terbanyak di atmosfer adalah ……….
Ar
He
Xe
Kr
Ne
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Reaksi di bawah ini yang tidak mungkin berlangsung adalah…..
Cl2 + 2Br‾ --> 2Cl‾ + Br2
2I‾ + Br2 --> I2 + 2Br‾
F2 + 2Cl‾ --> 2F‾ + Cl2
Br2 + 2F‾ --> F2 + 2Br‾
2Br‾ + F2 --> 2F‾ + Br2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika unsur natrium dibandingkan dengan sifat sifat unsur magnesium maka unsur natrium....
Energi ionisasinya lebih besar
Jari-jari atomnya lebih kecil
Lebih bersifat oksidator
Sifat reduktornya lebih lemah
Lebih bersifatbasa
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Data pengamatan logam Na direaksikan dengan air yang ditetesi Phenolptalin(pp), yaitu :
- Timbul gas
- Timbul letupan
- Terjadi nyala
- Warna air berubah merah
Zat yang dihasilkan adalah...
Gas H2 dan gas H2O
Gas O2 dan gas H2
Gas O2 dan energi yang besar
Larutan NaOHdan gas H2
Larutan NaOh dan gas O2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Unsur halogen tidak terdapat dalam keadaan bebas di alam, sebab… .
halogen sangat reaktif
Unsur halogen sukar bereaksi dengan unsur lain
senyawanya sangat stabil
halogen merupakan gas inert
halogen tidak mungkin terdapat di alam
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Elektrolisis garam-garam alkali berikut yang dapat menghasilkan logam alkali adalah….
larutan KI dengan elektroda C
larutan KI dengan elektroda Fe
larutan Na2SO4 elektroda C
lelehan NaCl electrode C
larutan NaI electrode C
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