Topic 2 - Metallic Bonding (Paper 2) Flashcards
what charge do electrons have?
negative
what charge do ions have?
negative or positive
what happens when electrons move in a material?
the material conducts electricity
what is electric current?
the flow of electrons
what are ionic compounds made up of?
a lattice of positive and negative ions
why dont solid ionic compounds conduct electricity?
the ions cannot move
why can ionic compounds move when dissolved?
the ions separate and are able to move in the solution
what is the structure of metals?
a giant structure of positive ions surrounded by a sea of delocalised electrons
what is metallic bonding?
the electrostatic attractions between the nuclei of the ions
why are metals good conductors of electricity?
delocalised electrons are able to move through the structure
why are metals good conductors of heat?
the movement of electrons means energy can be transferred quickly
why are metals malleable?
the layers of ions in a metal can slide over each other
