chemistry
- Created by: Thomas VP
- Created on: 19-10-18 12:31
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- chemistry
- electrolysis
- strong acid= fully ionises in water
- weak acid= partially ionises in water
- cation= positively charged ion +
- +VE CHARGED IONS MOVE TO THE NEGATIVE ELECTRODE (CATHODE)
- -VE CHARGED IONS MOVE TO THE POSITIVE ELECTRODE(ANODE)
- 'OIL RIG'
- OXIDATION IS LOSING ELECTRONS
- REDUCTION IS GAINING ELECTRONS
- ELECTRODE
- 'OIL RIG'
- ELECTRODE
- -VE CHARGED IONS MOVE TO THE POSITIVE ELECTRODE(ANODE)
- +VE CHARGED IONS MOVE TO THE NEGATIVE ELECTRODE (CATHODE)
- anion= negatively charged ion -
- +VE CHARGED IONS MOVE TO THE NEGATIVE ELECTRODE (CATHODE)
- -VE CHARGED IONS MOVE TO THE POSITIVE ELECTRODE(ANODE)
- 'OIL RIG'
- OXIDATION IS LOSING ELECTRONS
- REDUCTION IS GAINING ELECTRONS
- 'OIL RIG'
- -VE CHARGED IONS MOVE TO THE POSITIVE ELECTRODE(ANODE)
- +VE CHARGED IONS MOVE TO THE NEGATIVE ELECTRODE (CATHODE)
- IONIC SOLID are FIXED and cannot move
- IONIC SUBSTANCE that is MOLTEN or in a SOLUTION are free to move
- METALS above CARBON are extracted by electrolysis
- METALS below CARBON are extracted by reduction with carbon
- ENERGY CHANGE IN REACTIONS
- EXOTHERMIC= a reaction where energy is GIVEN OUT
- ENDOTHERMIC= a reaction where energy is TAKEN IN
- eg. thermal decomposition
- eg. combustion, neutralisation, oxidation reactions, displacement reactions
- ENDOTHERMIC= a reaction where energy is TAKEN IN
- EXOTHERMIC= a reaction where energy is GIVEN OUT
- electrolysis
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