
UH KIMIA UNSUR
Authored by dian mayasi
Chemistry
12th Grade
Used 7+ times

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50 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 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
5 mins • 1 pt
Berikut beberapa sifat unsur dalam sistem periodik.
(1) Reaktif
(2) Reduktor
(3) Molekulnya diatomik
(4) Membentuk asam
Sifat unsur yang sesuai dengan sifat unsur golongan IA yaitu ....
(1) dan (2)
(1) dan (3)
(2) dan (3)
(2) dan (4)
(3) dan (4)
3.
MULTIPLE CHOICE QUESTION
5 mins • 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
5 mins • 1 pt
Energi ionisasi unsur alkali secara acak adalah 376 kJ/mol; 496 kJ/mol; 403 kJ/mol; 419 kJ/mol; dan 520 kJ/mol. Energi ionisasi dari litium adalah ... kJ/mol.
376
403
419
496
520
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Unsur logam alkali yang mempunyai warna nyala kuning adalah ....
litium
natrium
kalium
rubidium
sesium
6.
MULTIPLE CHOICE QUESTION
5 mins • 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
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Unsur alkali yang mempunyai titik didih terbesar adalah ....
litium
natrium
kalium
rubidium
sesium
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