Alkali dan Alkali Tanah
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Unsur golongan IA disebut unsur logam alkali karena...
Mudah larut dalam air
Larutannya dalam air bersifat basa
Mudah teroksidasi di udara
Jari-jari atomnya paling besar dalam periodenya
Merupakan golongan unsur yang paling bersifat elektropositif
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Logam kalium dapat bereaksi dengan oksigen membentuk oksida, peroksida, dan superoksida. Rumus kimia senyawa kalium tersebut berturut-turut adalah...
K2O, KO, KO2
KO2, K2O, KO
K2O, K2O2, KO2
KO2, KO3, KO
K2O, K2O2, K2O3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lithium di alam terdapat dalam bentuk senyawa, misalnya: mineral spodumene. Rumus kimia mineral ini adalah...
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Unsur logam alkali yang memberu nyala berwarna ungu dalam tes nyala adalah...
Natrium
Litium
Rubidium
Sesium
Kalium
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Unsur logam alkali tanah yang tidak dapat beraksi dengan air adalah...
Berilium
Stronsium
Magnesium
Barium
Kalsium
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Senyawa logam alkali tanah yang digunakan untuk menetralkan asam lambung adalah...
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Dalam laboratorium NaOH dibuat dengan cara...
Logam natrium dengan air
Melarutkan natrium oksida dalam air
Mereaksikan garam dapur dengan KOH
Memanaskan larutan pekat natrium hidrogen karbonat
Mereaksikan natrium karbonat dengan kalsium hidroksida
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