Required practical - Electrolysis (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
15 cards from this deck
Definition of electrolysis
Definition of electrolysis
Breakdown of ionic compounds using electrical energy
Why ionic solutions conduct electricity
Why ionic solutions conduct electricity
Dissolved ions move freely as charge carriers
Current type needed for electrolysis
Current type needed for electrolysis
Direct current (dc)
Cations
Cations
Positive ions
Anions
Anions
Negative ions
Where cations go in electrolysis
Where cations go in electrolysis
To cathode (negative electrode)
Where anions go in electrolysis
Where anions go in electrolysis
To anode (positive electrode)
Process at cathode
Process at cathode
Reduction (gaining electrons)
Process at anode
Process at anode
Oxidation (losing electrons)
RED CAT, AN OX meaning
RED CAT, AN OX meaning
Reduction at Cathode, Oxidation at Anode
Cathode product: copper nitrate solution
Cathode product: copper nitrate solution
Red-brown solid (copper metal)
Anode product: copper chloride solution
Anode product: copper chloride solution
Pale-green gas (chlorine)
Why graphite electrodes used
Why graphite electrodes used
Inert (unreactive)
Test for chlorine gas
Test for chlorine gas
Damp blue litmus paper bleaches white
Essential safety for electrolysis
Essential safety for electrolysis
Eye protection