GCSE Chemistry – Electrolysis Study Guide Exam And Actual Answers 2024.
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Course
GCSE Chemistry
Institution
GCSE Chemistry
What is electrolysis? - Answer The breaking down of a substance using electricity
Types of electrolysis - Answer Of aqueous ionic compounds
Of molten ionic compounds
Ionic compound - Answer a compound composed of positive(cations) and negative ions(anions)
Why can't ionic compounds...
GCSE Chemistry – Electrolysis Study Guide Exam And Actual Answers 2024.
What is electrolysis? - Answer The breaking down of a substance using electricity
Types of electrolysis - Answer Of aqueous ionic compounds Of molten ionic compounds
Ionic compound - Answer a compound composed of positive(cations) and negative ions(anions)
Why can't ionic compounds conduct electricity as solid? - Answer The electrons aren't free to move and
carry the charge through the structure
What is an electrolyte? - Answer a liquid/solution that conducts electricity
Define discharge - Answer Gain/loss of electrons to become electrically neutral/ an atom
What is the general rule for electrolysis of aqueous solutions regarding which ion gets discharged at each
electrode ? - Answer The ion that is easiest to discharge will be discharged
How are electrolytes made? - Answer by melting or dissolving ionic compounds
What is the a positive electrode called? - Answer Anode
What is a negative electrode called? - Answer Cathode
reduction - Answer gain of electrons
Oxidation - Answer loss of electrons Which electrode are cations discharged at ? - Answer Cathode
Does oxidation or reduction occur at the cathode? - Answer reduction
Cations are discharged at the cathode as they gain electrons to become atoms
Which electrode are anions discharged at? - Answer Anode
Does oxidation or reduction occur at the anode? - Answer oxidation
Anions are discharged at the anode as they lose electrons to become atoms
How do ions become atoms or molecules? - Answer By losing or gaining electrons
How does an electrolysis circuit become complete? - Answer A flow of electrons taken from anode to cathode
How do you measure the conductivity of an electrolyte? - Answer With a conductivity probe
In molten ionic compounds there is only ___________ - Answer one source of ions
In the electrolysis of molten lead bromide what is the half equation for the Pb2+ ions? - Answer Pb2 + 2e --> Pb
In the electrolysis of molten lead bromide what is the half equation for the Br- ions? - Answer 2Br- --
>Br2 + 2e
What is an electric current? - Answer the flow of electrons
What is a covalent bond? - Answer a shared pair of electrons
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