Explain how electricity is conducted in a metal.
Metals have a giant metallic structure, with regular closely packed layers of positive ions in a 'sea' of delocalised electrons. What this means is that metals have a large number of positive ions, in a regular arrangements, with delocalised, or free, electrons surrounding them. When an electrical current is passed through the metal, these free electrons are able to move around, and form a current in the metal, passing it on to the next material.
ZK
Related Chemistry GCSE answers
All answers ▸Name three types of chemical bonding in atoms.
balance this equation C8H18 + O2 ---> CO2 + H2O
What is the overall charge of the nucleus of an atom, and why?
An equilibrium between hydrogen and nitrogen to make ammonia. Explain what would happen to the amount of product if a) pressure was increased b) temperature was increased c) a catalyst was added. Energy change -92KJ/mol