Unit 7: Rate of Reaction / Kadar Tindak Balas
Authored by Nilam Bhd
Chemistry
10th Grade
Used 209+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following changes can be used to determine the rate of reaction?
Antara perubahan berikut, yang manakah boleh digunakan untuk menentukan kadar tindak balas?
pH and colour / pH dan warna
pH and size / pH dan saiz
Pressure and size / Tekanan dan saiz
Concentration and shape / Kepekatan dan bentuk
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When the pressure of a reactant increases, the rate of reaction increases. Which statement explains why the rate of reaction increases?
Apabila tekanan bahan tindak balas meningkat kadar tindak balas meningkat. Pernyataan manakah yang menerangkan mengapa kadar tindak balas meningkat?
The reactant particles which collide more often are able to overcome the lower activation energy
Zarah-zarah bahan tindak balas yang berlanggar lebih kerap boleh mengatasi tenaga pengaktifan yang lebih rendah
The total surface area of the reactant particles increases Jumlah luas permukaan zarah-zarah bahan tindak balas bertambah
The total number of the reactant particles per unit volume increases
Jumlah bilangan zarah-zarah bahan tindak balas per unit isi padu bertambah
The reactant particles move faster and collide more often with one another
Zarah-zarah bahan tindak balas bergerak lebih cepat dan berlanggar lebih kerap antara satu sama lain
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
State the meaning of the effective collision.
Nyatakan maksud perlanggaran berkesan.
The collision that cause reaction
Perlanggaran yang menyebabkan tindak balas berlaku
The collision produces less energy than the activation energy
Perlanggaran menghasilkan tenaga kurang daripada tenaga pengaktifan
The collision that take place before the reaction
Perlanggaran yang berlaku sebelum tindak balas
The collision that take place after the reaction
Perlanggaran yang berlaku selepas tindak balas
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Meat cooked in a pressure cooker cooks faster. Which of the following explains the situation?
Daging yang dimasak dengan periuk tekanan lebih cepat masak. Antara berikut, yang manakah menghuraikan situasi ini?
The kinetic energy increases
Tenaga kinetik bertambah
The activation energy decreases
Tenaga pengaktifan berkurang
Total surface area expose to reaction increase
Jumlah luas permukaan yang terdedah kepada tindak balas bertambah
The frequency of effective collision increases
Frekuensi perlanggaran berkesan bertambah
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
In the reaction between sulphuric acid and sodium thiosulphate, sulphur precipitate will be formed at a faster rate if higher concentration of hydrochloric acid is used because?
Dalam tindak balas antara asid hidroklorik dengan natrium tiosulfat, mendakan sulfur akan terbentuk pada kadar yang lebih cepat jika kepekatan asid sulfurik yang lebihtinggi digunakan kerana?
the activation energy decreases
tenaga pengaktifan berkurang
the ions move faster
ion bergerak lebih cepat
the frequency of effective collisions increases
frekuensi perlanggaran berkesan bertambah
the number of particles per unit volume increases
bilangan zarah per unit isi padu bertambah
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The observation obtained between the reaction of sodium thiosulphate solution and sulphuric acid is yellow precipitate. What is the yellow precipitate formed?
Pemerhatian yang diperolehi bagi tindak balas antara larutan natrium tiosulfat dan larutan asid sulfurik cair, adalah mendakan kuning. Apakah mendakan kuning yang terbentuk
tersebut?
Carbon
Karbon
Sulphur
Sulfur
Sulphur trioxide
Sulfur trioksida
Sodium sulphate
Natrium sulfat
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which statement explains the changing of curve based on Collision Theory?
Pernyataan manakah menerangkan perubahan lengkungan yang diperolehi berdasarkan Teori Perlanggaran?
The total surface area of solid reactants increases
Jumlah luas permukaan pepejal bahan tindak balas meningkat
The number of mole per unit volume of particles increases Bilangan mol per unit isi padu zarah-zarah meningkat
The activation energy of the reaction decreases
Tenaga pengaktifan tindak balas berkurangan
The kinetic energy of the particles of reactant decreases
Tenaga kinetik zarah-zarah dalam tindak balas berkurangan
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