WorksheetsF5 Science Chapter 06 - Electrochemistry
Total questions: 17
Worksheet time: 4hrs 15mins
Which of the following shows the correct conversion of energy in electrolysis process?
Antara yang berikut, manakah menunjukkan perubahan tenaga yang betul dalam proses elektrolisis?
Chemical energy → Electrical energy
Tenaga kimia → Tenaga elektrik
Electrical energy → Chemical energy
Tenaga elektrik → Tenaga kimia
What is produced when an electrolyte dissolves in water?
Apakah yang terhasil apabila elektrolit terlarut ke dalam air?
Electron
Elektron
Atom
Atom
Ion
Ion
Molecules
Molekul
State which one is cathode?
Yang manakah merupakan katod?
A
B
C
D
Which of the following is not an electrolyte？
Antara yang berikut, manakah bukan elektrolit?
（答案有2个）
Copper (II) sulphate solution
Larutan kuprum (II) sulfat
Molten aluminium oxide
Leburan aluminium oksida
Sucrose solution
Larutan sukrose
Lead (II) bromide powder
Serbuk plumbum (II) bromida
Sodium hydroxide solution
Larutan natrium hidroksida
What are the ions present in electrolysis of copper (II) sulphate solution?
Apakah ion-ion yang hadir dalam elektrolisis larutan kuprum (II) sulphate?
Copper (II) ion, sulphate ion
Ion kuprum (II), ion sulfat
Copper (II) ion, sulphate ion, hydrogen ion, hydroxide ion
Ion kuprum (II), ion sulfat, ion hidrogen, ion hidroksida
Hydrogen ion, hydroxide ion
Ion hidrogen, ion hidroksida
Copper (II) sulphate ion
Ion kuprum (II) sulfat
Which of the following factors does not affect the product of electrolysis?
Faktor-faktor manakah yang tidak mempengaruhi hasil elektrolisis?
Position of ion in electrochemical series
Kedudukan ion dalam siri elektrokimia
Concentration of halide ion in electrolyte
Kepekatan ion halida dalam elektrolit
Mass of electrolyte
Jisim elektrolit
Type of electrode
Jenis elektrod
Which cation (+) will be selected for discharged according to electrochemical series?
Kation (+) manakah akan dipilih untuk dinyahcas berdasarkan siri elektrokimia?
Potassium ion, K+
Ion kalium, K+
Hydrogen ion, H+
Ion hidrogen, H+
Copper (II) ion, Cu2+
Ion kuprum (II), Cu2+
Aluminium ion, Al3+
Ion aluminium, Al3+
Diagram shows the electrolysis of molten lead (II) bromide. What can be observed at the cathode (-) and anode (+)?
Rajah menunjukkan elektrolisis leburan plumbum (II) bormida. Apakah yang dapat diperhati pada katod (-) dan anod (+)?
Anode: Silver solid deposited
Cathode: Brown gas released
Anod: Pepejal kelabu terenap
Katod: Gas perang dibebaskan
Anode: Brown gas released
Cathode: Silver solid deposited
Anod: Gas perang dibebaskan
Katod: Pepejal kelabu terenap
Anode: Gas bubbles produced
Cathode: Gas bubbles produced
Anod: Gelembung gas terhasil
Katod: Gelembung gas terhasil
No changes
Tiada perubahan
What will be produced at the anode and cathode?
Apakah yang akan terhasil di anod dan katod?
Anode: Hydrogen gas
Cathode: Copper
Anod: Gas hidrogen
Katod: Kuprum
Anode: Oxygen gas
Cathode: Hydrogen gas
Anod: Gas oksigen
Katod: Gas hidrogen
Anode: Oxygen gas
Cathode: Copper
Anode: Gas oksigen
Katod: Kuprum
Anode: Sulfur
Cathode: Copper
Anod: Sulfur
Katod: Kuprum
What is the method to test the gas collected in anode?
Apakah kaedah untuk menguji gas yang terkumpul di anod?
Diagram shows the electrolysis of concentrated hydrochloric acid (1 mol dm-3). What can be collected at anode and cathode?
Rajah menunjukkan elektrolisis asid hidroklorik pekat (1 mol dm-3). Apakah yang dapat dikumpulkan pada anod dan katod?
Anode: Oxygen gas
Cathode: Hydrogen gas
Anod: Gas oksigen
Katod: Gas hidrogen
Anode: Chlorine gas
Cathode: Hydrogen gas
Anod: Gas klorin
Katod: Gas hidrogen
Anode: Hydrogen gas
Cathode: Oxygen gas
Anod: Gas hidrogen
Katod: Gas oksigen
Anode: Hydrogen gas
Cathode: Chlorine gas
Anod: Gas klorin
Katod: Gas hidrogen
Diagram shows the electrolysis of copper (II) sulphate using copper electrode. What can be observed on anode and cathode?
Rajah menunjukkan elektrolisis kuprum (II) sulfat dengan menggunakan elektrod kuprum. Apakah yang dapat diperhati pada anod dan katod?
Anode: Gas bubble produced
Cathode: Brown solid deposited
Anod: Gelembung gas terhasil
Katod: Pepejal perang terenap
Anode: Gas bubble produced
Cathode: Cathode dissolved in electrolyte
Anod: Gelembung gas terhasil
Katod: Katod terlarut ke dalam elektrolit
Anode: Anode dissolved in electrolyte
Cathode: Brown solid deposited.
Anod: Anod terlarut ke dalam elektrolit
Katod: Pepejal perang terenap
Anode: Gas bubble produced
Cathode: Gas bubble produced
Anod: Gelembung gas terhasil
Katod: Gelembung gas terhasil
What will happen on anode?
Apakah yang akan berlaku pada anod?
Decrease in mass
Pengurangan jisim
Deposition of copper
Pengenapan kuprum
Nothing changes
Tiada perubahan
Formation of gas bubbles
Penghasilan gelembung gas
Diagram shows the electroplating process of iron spoon with copper. What is X?
Rajah menunjukkan proses penyaduran sudu besi dengan kuprum. Apakah X?
Iron (II) nitrate
Besi (II) nitrat
Silver nitrate
Argentum nitrat
Copper (II) sulphate
Kuprum (II) sulphate
Magnesium sulphate
Magnisium sulfat
The process of electroplating does not work. Describe the modification that can be done.
Proses penyaduran tidak berfungsi. Nyatakan pengubahsuaian yang dapat dilakukan.
Suggest metal X which can produce the highest reading on voltmeter.
Cadangkan logam X yang dapat menghasilkan bacaan yang tertinggi pada voltmeter.
Magnesium
Magnesium
Lead
Plumbum
Zinc
Zink
Copper
Kuprum
A chemical cell is using zinc and copper as electrodes. Which will be the positive terminal?
Suatu sel kimia menggunakan zink dan kuprum sebagai elektrod. Yang manakah akan menjadi terminal positif?
Zinc
Zink
Copper
Kuprum
None of above
Tiada yang ditunjukkan
