
LATIHAN US
Authored by Sri Ernawati
Science
9th Grade
Used 4+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Larutan yang memiliki pH lebih dari 7 adalah....
unsur
asam
basa
garam
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Apa peran katalis dalam reaksi kimia ?
mengurangi energi aktivasi reaksi
meningkatkan energi aktivasi reaksi
mengurangi konsentrasi reaktan
mengurangi suhu reaksi
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Indikator yang sering digunakan untuk menguji sifat asam dan basa adalah.....
bromtimol biru
lakmus
fenolftalein
kalium permanganat
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Reaksi antara asam dan basa menghasilkan....
air dan gas
gas dan logam
garam dan udara
garam dan air
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Reaksi berikut ini yang termasuk dalam kategori reaksi asam-basa adalah....
H₂SO₄ + Ba(OH)2 → BaSO4+ HH2H₂
NaOH + HCl→ NaCl + H₂O
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mengapa peningkatan suhu dapat mempercepat laju reaksi kimia?
karena suhu yang lebih tinggi mengurangi jumlah tumbukan antar partikel.
karena suhu yang lebih tinggi mengurangi energi kinetik partikel.
karena suhu yang lebih tinggi meningkatkan energi kinetik partikel.
karena suhu yang lebih tinggi mengurangi konsentrasi reaktan.
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Laju Reaksi Kimia
Laju reaksi kimia adalah kecepatan di mana reaktan diubah menjadi produk dalam suatu reaksi kimia. Laju reaksi dapat dipengaruhi oleh beberapa faktor, termasuk konsentrasi reaktan, suhu, luas permukaan, dan keberadaan katalis.
Faktor yang dapat meningkatkan laju reaksi kimia adalah:
mengurangi luas permukaan reaktan
mengurangi konsentrasi reaktan.
menambahkan katalis
menurunkan suhu
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