C1 - C5 Chemistry
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Turn these ions to neutral atoms: Na^+ Mg^2+ Fe^3+ Cl^- S^2- N^3-
Na+ Give 1 electron back to the ion Mg2+ Give 2 electrons back to the ion Fe3+ Give 3 electrons back to the ion Cl- Take 1 electron away from the ion S2- Take 2 electrons away from the ion N3- Take 3 electrons away from the ion
What is Electrolysis?
It is when an electric current is used to break down ionic compounds and turn them back into their elements.
What do you need for Electrolysis?
• an electric power supply • anode/cathode made of carbon The positive electrode is called the anode. The negative electrode is called the cathode.
Where do the positive ions (cations) move during electrolysis?
They move to the Cathode (negative) Opposites attract!