
UKOM Kekekalan Materi
Authored by NANDA SALSABILA RACHEN
Chemistry
University
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Hukum dasar kimia merupakan hukum dasar yang digunakan dalam stoikiometri (perhitungan kimia) yaitu, kecuali…..
Hukum Lavoisier
Hukum Dalton
Hukum Lewis
Hukum Proust
2.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Seseorang melakukan percobaan dengan mereaksikan cairan merkuri dengan gas oksigen. Dalam suatu wadah tertutup sehingga menghasilkan merkuri oksida yang berwarna merah. Apabila merkuri oksida dipanaskan kembali, senyawa tersebut akan terurai menghasilkan sejumlah cairan merkuri dan gas oksigen dengan jumlah yang sama seperti semula.
Percobaan tersebut disebut hukum…..
Hukum Dalton
Hukum Lavoisier
Hukum Avogadro
Hukum Gay Lussac
3.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Pada mekanisme reaksi di bawah, ZnCL2 berfasa apa?
liquid
solid
aqueos
Gas
4.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Dalam reaksi kimia, total massa reaktan sebelum reaksi sama dengan
Total massa produk setelah reaksi
Total massa produk plus energi yang dilepaskan
Total massa yang hilang
Tidak ada hubungan massa
5.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Hal-hal yang mempengaruhi reaksi adalah
suhu konsentrasi reaktan, luas permukaan sentuh, katalis, serta Sifat dan kereaktifan zat pereaksi itu sendiri
suhu konsentrasi reaktan, luas permukaan sentuh, katalis, serta udara
suhu, luas permukaan sentuh, katalis, alat praktikum
suhu, luas permukaan sentuh, katalis, paralaks
6.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Berikut ini adalah contoh perubahan fisika yang menunjukkan kekekalan materi, kecuali
es yang mencair menjadi air
Air yang menguap menjadi uap air
pembakaran kayu
pembentukan awan dari uap air
7.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
Reaksi pembakaran kayu menghasilkan gas dan abu. Apa yang terjadi pada massa kayu?
Massa kayu hilang
Massa kayu berubah menjadi gas dan abu dengan total massa sama
Massa kayu bertambah
Massa kayu berkurang tanpa sebab
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