KIMIA UNSUR 2 (ALKALI & ALKALI TANAH)
Quiz
•
Chemistry
•
12th Grade - University
•
Practice Problem
•
Easy
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini beberapa sifat unsur.
(1) Reduktor kuat
(2) Mudah membentuk ion dengan muatan -1
(3) Bereaksi dengan air membentuk basa kuat
(4) Umumnya berwujud gas
Sifat unsur golongan alkali terdapat pada nomor ....
(1) dan (2)
(1) dan (3)
(2) dan (3)
(2) dan (4)
(3) dan (4)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur logam alkali yang kurang reaktif terhadap air adalah ....
Cs
Rb
K
Na
Li
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini merupakan sifat unsur alkali sebagai logam, kecuali ....
konduktor listrik yang baik
permukaan mengkilap
mudah ditempa
penghantar panas yang baik
sukar ditempa
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur logam alkali yang mempunyai warna nyala kuning adalah ....
litium
natrium
kalium
rubidium
sesium
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Keelektronegatifan unsur-unsur alkali secara acak adalah 0,7; 0,8; 1,0; 0,8; 0,9. Keelektronegatifan dari Na adalah ....
0,7
0,8
0,9
1,0
0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur alkali yang mempunyai titik didih terbesar adalah ....
litium
natrium
kalium
rubidium
sesium
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini beberapa sifat fisik/kimia suatu zat :
(1) mudah melepas elektron
(2) merupakan logam lunak
(3) isolator yang baik ; dan
(4) mempunyai titik leleh yang sangat rendah
Sifat unsur logam alkali terdapat pada nomor ….
(1) dan (2)
(1) dan (3)
(1) dan (4)
(2) dan (4)
(3) dan (4)
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