Describe how sodium conducts thermal energy. (3 marks) GCSE AQA

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ryann15
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In the mark scheme it mentions 'delocalised electrons from the outer shell' 'free to move' and 'energy transferred through the structure'. Online it mentions sodium conducting when it's in a molten state'. Help!
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charco
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(Original post by ryann15)
In the mark scheme it mentions 'delocalised electrons from the outer shell' 'free to move' and 'energy transferred through the structure'. Online it mentions sodium conducting when it's in a molten state'. Help!
Heat conduction: The delocalised electrons fasten the atoms (ions) together and transfer vibrations from one atom to another.
Electrical conductivity: The electrons are free to move over the whole structure (delocalised) and so can move towards a positive potential and away from a negative potential.
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