metallic bonding

metals bondign to non metals

ionic bonding

non metals bonding to other non metals

covalent bonding

what pattern are the atoms arranged in

a regular repeating pattern known as a lattice structure

what happens when all these atoms are together in a metal

they give up these outer shell electrons and share them with all the other atoms in a metal.

what happens to the state of the atoms when theyve lost negative electrons

they become positively charged ions

what are metals able to form

crystals

what is it called when the electrons are free to move around

a sea of delocalised electrons

what is metallic bonding

the strong electrostatic force of attraction between the positive ions and the negative electrons.

5 properties of metals

malleable. ductile, good conductors of heat and electricity, high melting and boiling points, shiny

why are metals good conductors of heat and electricity

because the delocalised electrons can carry electrical current and thermal energy

if we want a harder metal that wont bend easily, what can we make

alloys which contain 2 or more different elements

how do we make alloys

by mixing together 2 or more different metals or sometimes a metal and non metal

why do we pick elements with differeng sized atoms when making an alloy

a combination of different sized atoms disrupts the regular structure, layers can no longer slide

alot of —- is needed to overcome the attraction between the positive ions and the negative electrons

heat energy