GCSE electrolysis Flashcards
(10 cards)
What is electrolysis?
Electrolysis is a chemical process that uses electricity to break down compounds into their individual elements.
True or False: Electrolysis can only occur in liquid solutions.
False: Electrolysis can occur in both liquid solutions and molten substances.
What are the two electrodes used in electrolysis called?
The two electrodes are called the anode (positive electrode) and the cathode (negative electrode).
Fill in the blank: The substance that is broken down during electrolysis is called the ______.
electrolyte
Which ion is attracted to the cathode during electrolysis?
Cations are attracted to the cathode.
Multiple Choice: In electrolysis, which of the following is typically produced at the anode? A) Hydrogen gas B) Oxygen gas C) Sodium D) Chlorine
B) Oxygen gas
What is the role of the power supply in electrolysis?
The power supply provides the electrical energy needed to drive the electrolysis reaction.
True or False: Electrolysis can be used to purify metals.
True: Electrolysis is commonly used in the purification of metals.
What happens to the ions at the electrodes during electrolysis?
Ions gain or lose electrons at the electrodes, leading to the formation of new substances.
What is the typical result of electrolysis of water?
The typical result is the production of hydrogen gas at the cathode and oxygen gas at the anode.
