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Electrolysis Questions and Correct Answers/ Latest Update / Already Graded

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what are the state symbols for solids, liquids, gases and aqueous solutions? Ans: s , l , g , aq what is electrolysis? Ans: a chemical reaction in which an ionic liquid is decomposed into new substances using an electrical current. it is a flow of charge of charge produced by moving ions and ions are discharged at the electrodes What is electrical current? Ans: the flow of electrons or ions Why do covalent compounds not conduct electricity? 2 | Page Ans: because covalent compounds only contain neutral atoms and contain no free electrons. In which form do ionic compounds conduct electricity? Ans: Molten Why are ionic compounds only conductive when molten? Ans: Because the ions are free to move and can therefore carry electrical charge what is an electrolyte? Ans: a liquid that conducts electricity What is an experiment to distinguish between electrolytes and nonelectrolytes

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Electrolysis (IGCSE), Electrolysis - IGCSE
Questions and Correct Answers/ Latest
Update / Already Graded
Electrolysis


Ans: The breaking down of an ionic compound when molten or in an

aqueous solution by the passage of electricity.




Electric current


Ans: Causes a chemical reaction that breaks down the ionic compound.




Electrolyte


Ans: The compound that conducts electricity when molten and breaks

down during electrolysis.




Electrodes


Ans: Rods that carry electric current to and from the electrolyte.

, 2 | Page

Anode


Ans: Positive electrode.




Cathode


Ans: Negative electrode.




Positive ions


Ans: Form at the cathode.




Negative ions


Ans: Form at the anode.




Inert conductor


Ans: Unreactive conductor that won't interfere with the electrolysis.




Brine

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