IGCSE Electrolysis

Anna van W
Mind Map by Anna van W, updated more than 1 year ago
Anna van W
Created by Anna van W almost 6 years ago
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IGSCE combined science chemistry (C5) electricity & chemistry
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Resource summary

IGCSE Electrolysis
1 electrodes
1.1 cathode
1.1.1 negative electrode
1.1.1.1 attracts positive ions
1.1.1.1.1 hydrogen & metals
1.1.1.1.2 gain electrons if touch cathode
1.2 anode
1.2.1 positive electrode
1.2.1.1 attracts negative ions
1.2.1.1.1 non-metals
1.2.1.1.2 lose electrons if touch anode
2 a process in which electricity is used to break compounds down into their elements
3 solution has to be liquid
3.1 to conduct the electricity
3.1.1 is called: electrolyte
4 example: CuCl2 (copper cloride)
4.1 Cu+2 goes to cathode
4.1.1 gains 2 electrons and becomes Cu, so copper is formed around the cathode
4.1.1.1
4.2 Cl-1 goes to anode
4.2.1 loses 1 electron and becomes Cl, so chorine gas is released above the anode
4.2.1.1 CuCl2 -> Cu + Cl2
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