
Unsur Periode 3
Authored by Nita Rosita
Chemistry
12th Grade
Used 5+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur periode ketiga yang terdapat bebas di alam adalah ….
Si, P
Al, S
S, Ar
Al, Mg
P, Na
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diantara unsur-unsur periode ketiga, pernyataan yang benar adalah ….
(1) Na dan Mg termasuk logam
(2) Cl dan Ar termasuk gas
(3) S dan Cl termasuk non logam
(4) Si termasuk metalloid
1, 2 dan 3
1 dan 3
2 dan 4
4
1, 2, 3, 4
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur-unsur di alam ada yang terdapat dalam bentuk bijih mineral dan ada yang bentuk unsur bebas. Berikut beberapa mineral dialam :
(1) Bauksit
(2) Kriolit
3) Kalkopirit
(4) asbes
(5) silikat
Mineral yang mengandung silikon adalah ....
(1) dan (2)
(2) dan (3)
(3) dan (4)
(3) dan (5)
(4) dan (5)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sifat-sifat unsur periode ketiga dari Na sampai Cl berikut adalah benar, kecuali ….
sifat basa makin berkurang
sifat asam makin bertambah
afinitas electron cenderung berkurang
energy ionisasi cenderung bertambah
keelektronegatifan unsur bertambah
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sifat – sifat unsur periode ketiga dari natrium hingga argon berikut ini,
1. Sifat logam bertambah, sifat nonlogam berkurang
2. Sifat oksidator meningkat, sifat reduktor menurun
3. Sifat asam bertambah, sifat basa berkurang
4. Struktur raksasa, ikatan kovalen, ionik, molekul sederhana, atom bebas
5. Molekul sederhana, struktur raksasa, ikatan ionik, kovalen, atom bebas
Perubahan sifat yang benar adalah....
1 dan 3
1 dan 5
2 dan 3
2 dan 4
3 dan 5
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur periode tiga yang bersifat pengoksidasi paling kuat adalah ....
Silikon
Aliminium
Klorin
Magnesium
Natrium
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut ini beberapa nama pengolahan unsur:
(1) Tanur tinggi;
(2) Dow;
(3) Hall-Heroult;
(4) Deacon; dan
(5) Wohler
Pengolahan fosfor terdapat pada nomor ….
(1)
(2)
(3)
(4)
(5)
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