69729
Description
Mind Map by nikhitaparmar, updated more than 1 year ago
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Created by nikhitaparmar
over 11 years ago
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C6
- Redox Reactions
- Electrons transferred
- Oxidation: loss of electrons
- Reduction: gain of electrons
- Oxidising agent accepts electrons
- Reducing agent donates electrons
- Chlorine gas passed into iron(II) salt
- Green to yellow
- Fe2+ loses electron=Fe3+
- Chlorine gained electron that Fe2+ lost
- Chlorines reduced. Iron(II) ion must be reducing agent
- Green to yellow
- Displacement Reactions are redox reactions
- More reactive metal will displace a less reactive metal from its compound
- Put reactive metal into solution of dissolved metal compound, reactive metal replaces less reactive metal
- Metal ion gains electrons (reduced)
- Metal atom loses electrons (oxidised)
- More reactive metal will displace a less reactive metal from its compound
- Electrons transferred
- Rusting of iron
- iron+oxygen+water=hydrated iron(II) oxide
- Iron loses electrons when reacting with oxygen
- Oxygen gains electrons when when reacting with iron
- Metals combined with other things to prevent rust
- Oil, grease and paint prevent rusting
- Coat of tin can protect steel from rust
- More reactive metals are used to prevent iron rusting
- iron+oxygen+water=hydrated iron(II) oxide
- Electrolysis
- Splitting up with electricity
- electric current passed through a molten or dissolved ionic compound causing it to decompose
- creates flow of charge through electrolyte
- positive ions towards cathode
- negative towards anode
- Splitting up with electricity
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