metallic bonding and alloys Flashcards
what are properties of metals
-high M.P and B.P
-malleable
-good conductors of heat and electricity
why do metals have a high M.P & B.P
due to the electrostatic attraction between postive metal ions and negative delocalised electrons
why are metals malleable
rows of metal ions can slide over each other
why are metals good conductors of heat and electricity
delocalised electrons are free to move
what structure do metals have
a giant lattice structure
how to metals make themselves positive metal ions
the atoms delocalise their outer shell electrons
what is electrostatic attraction
attraction between positive and negative
why are pure metals malleable
they are orderly arranged because they have the same sized atoms
why are alloys hard
they are disorderly arranged as they have different sized atoms
what is an alloy
a mixture of a metal with one or more other elements
