Electrochemistry
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Electrolysis of molten compounds
SubtopicElectrolysis of molten compounds under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
In the electrolysis of any molten metal halide, where will the metal always be formed?
A.At the anode
B.At the cathode
C.In the middle of the electrolyte
D.On the surface of the container
- 2.
Which of the following chemical species is an example of a cation?
A.B.C.D. - 3.
What happens to bromide ions () when they reach the anode in molten electrolysis?
A.They gain electrons to become atoms
B.They lose electrons to become atoms
C.They react with the graphite to form carbon bromide
D.They turn into positive ions
Download the worksheet for Electrochemistry - Electrolysis of molten compounds to practice offline. It includes additional chapter-level practice questions.
Electrolysis of aqueous solutions
SubtopicElectrolysis of aqueous solutions under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
In the electrolysis of water (with a little acid), why is more gas collected at one electrode than the other?
A.Oxygen is twice as dense as hydrogen
B.Hydrogen gas is produced at twice the volume of oxygen
C.Oxygen gas is produced at twice the volume of hydrogen
D.One of the gases dissolves completely in the water
- 2.
Which electrode is the negative terminal in the following circuit?
A.The Cathode
B.The Anode
C.The Electrolyte
D.The Switch
- 3.
What is the name of the process that occurs when an ion gains electrons at an electrode?
A.Oxidation
B.Reduction
C.Combustion
D.Decomposition
Download the worksheet for Electrochemistry - Electrolysis of aqueous solutions to practice offline. It includes additional chapter-level practice questions.
Electroplating
SubtopicElectroplating under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which particle flows through the wires connecting the battery to the electrodes?
A.Protons
B.Ions
C.Electrons
D.Atoms
- 2.
Why does electroplating help to increase the lifespan of a metal bridge component?
A.It makes the metal harder to bend
B.It prevents the metal from reacting with oxygen and water
C.It increases the bridge's magnetic field
D.It makes the metal lighter
- 3.
In an electroplating cell, the anode is the...
A.Positive electrode
B.Negative electrode
C.Electrolyte
D.Object being plated
Download the worksheet for Electrochemistry - Electroplating to practice offline. It includes additional chapter-level practice questions.
Hydrogen fuel cells
SubtopicHydrogen fuel cells under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which of these gases is the most common oxidant used in fuel cells?
A.Pure Helium
B.Atmospheric Oxygen
C.Carbon Monoxide
D.Argon
- 2.
What is a common use for the heat generated by a large stationary fuel cell?
A.To freeze water into ice
B.To provide heating for buildings (cogeneration)
C.To create more platinum
D.To store electricity for later
- 3.
What happens to the ions after they are formed at the anode?
A.They travel through the electrolyte to the cathode
B.They travel through the external circuit to the motor
C.They are released into the air as hydrogen gas
D.They react with the platinum to form a solid
Download the worksheet for Electrochemistry - Hydrogen fuel cells to practice offline. It includes additional chapter-level practice questions.