
KUIZ STEM 2
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
NORA ABDULLAH
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5 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Karbon-12 dan karbon-14 merupakan isotop. Apakah persamaan yang dimiliki oleh kedua-dua atom ini?
I Bilangan proton
II Bilangan neutron
III Sifat fizik
IV Sifat kimia
I dan II
I dan IV
II dan III
III dan IV
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jisim tiga atom unsur Y adalah sama dengan jisim empat atom karbon. Y bukan simbol sebenar unsur itu. Apakah jisim atom relatifnya. [Jisim atom relatif: C = 12]
12
16
36
48
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara yang berikut, unsur yang manakah terletak dalam Kumpulan 18 dalam Jadual Berkala Unsur?
Helium dan kripton
Argon dan platinum
Mangan dan indium
Radon dan rubidium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah kala untuk unsur dengan nombor proton 20?
5
4
3
2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hitung nilai pH bagi larutan Q yang mempunyai ion hidroksida, OH- 0.5 mol dm-3.
pH = 0.3
pH = 3.0
pH = 12.4
pH = 13.7
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