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Mapa Mental
por
Abi Riley
, criado
more than 1 year ago
GCSE Chemistry Mapa Mental sobre ELECTROLYSIS, criado por Abi Riley em 10-04-2016.
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chemistry
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Criado por
Abi Riley
quase 9 anos atrás
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sophie b
almost 9 years ago
this is so good Abs! i think you spelt electrolysis wrong though ;)
this is so good Abs! i think you spelt electrolysis wrong though ;)
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5089150
mind_map
2016-04-12T00:40:52Z
ELECTROLYSIS
The breakdown of an ionic
compound into its elements
by use of electricity
decomposition of an
electrolyte by
passage of an electric
current= electrolosis
Electrolyte= substance
which will conduct
electric current
Must be molten OR dissolved in
water
The electrolyte is broken down by
electricity passed through an
ELECTRODE.
Positive
electrode=
ANODE
Negative
electrode=
CATHODE
In solids= charge
carrier- electrons
In liquids= charge
carrier- ions
Electrolyte MUST be
molten/solution to conduct.
thus, ions are free to move
Ionic compound=
positive ions (atoms
which lost negative
electrons) and negative
ions (atoms which gained
negative electrons)
2 ways to split up ions
Take alot to break a
strong ionic bond in a
GIANT structure- but with
enough energy will
melt and become
molten
Dissolve in water.
eg; Zinc Chloride
electrolysed= Zinc
metal+Chlorine gas
Electrolysis can only occur on FREE substances
Negatively charged ions attracted here
Positively charged ions attracted here
Opposites attract
1. Melt 2.
Place
electrodes
in melt 3.
Flick
Switch
Group 1 and transition metals-
one extra electron, must gain
eg: Zinc ions- GAIN electrons.
Chloride ions- LOSE electrons.
Neg charged chloride ions
Pos charged Zinc ions
ANION
CATION
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5089150
mind_map
2016-04-12T00:40:52Z
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