
Kimia Unsur
Authored by Rian Lestariani
Science, Chemistry
12th Grade
Used 93+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dibawah ini beberapa mineral yang mengandung logam alkali tanah, kecuali ....
Beril
Olivin
Gips
Sendawa chili
Barit
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Logam natrium merupakan reduktor kuat, hal itu dibuktikan dengan ....
Nyawa natrium berwarna kuning
Logam natrium sangat lunak
Basanya sangat kuat
Garamnya mudah larut dalam air
Natrium mudah bereaksi dengan air
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika suatu senyawa nitrat logam alkali dibakar di atas nyala api, ternyata memberikan warna nyala ungu, maka unsur yang terkandung adalah ....
Li
Na
K
Rb
Cs
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Data pengamatan logam Na direaksikan dengan air yang ditetesi indikator Phenolptalin,
yaitu :
- Timbul gas
- Timbul letupan
- Terjadi nyala
- Warna air berubah memerah
Zat yang dihasilkan adalah...
Gas H2 dan gas H2O
Gas O2 dan gas H2
Gas O2 dan energi yang besar
Larutan NaOH dan gas H2
Larutan NaOH dan gas O2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Beberapa senyawa yang mengandung logam alkali tanah:
1. kapur sirih
2. garam inggris
3. batu karbit
4. kapur tohor
5. batu kapur
Dari senyawa tersebut yang digunakan untuk kapur tulis adalah ....
1
2
3
4
5
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Logam alkali dan alkali tanah hanya dapat diperoleh dengan cara elektrolisis leburan garamnya dan bukan dari larutannya karena….
air dapat bereaksi dengan logam alkali/alkali tanah
logam alkali/alkali tanah melarut dalam air
ion logam alkali/alkali tanah tereduksi tanpa air
ion logam alkali/alkali tanah dalam air teroksidasi
ion logam alkali/alkali tanah tanpa air teroksidasi
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Gas mulia yang paling banyak terdapat di atmosfer adalah....
Xenon
Neon
Kripton
Helium
Argon
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