Zusammenfassung der Ressource
Metals
- Bonding
- Metallic
- tightly packed layers
- lattice
- 'Sea' of delocalised electrons
- outer electrons separate from atoms
- free to move through whole structure
- Metal atom centre
- positively charged
- attracted to delocalised electrons
- Physical properties
- conductors of heat
and electricity
- heat
- D/L electrons gain kinetic
energy
- move faster so transfer energy
through-out metal
- electricity
- D/L electrons create charge
- D/L electrons free
to move
- High melting point
- strong attraction between +
core and D/L electrons
- Malleable
- centres are able to slide
over each other
- D/L electrons keep
structure together
- Dense
- many atoms packed
into small space
- tight lattice structure
- Chemical properties
- water
- metal hydroxide + hydrogen
- oxygen
- metal oxide
- oxidation takes
place
- acids
- salt and hydrogen
- Reactivity series
- magnesium and
above react with
water
- lead and above
react with acids
- form hydrogen
- mercury and
copper react
with oxygen
- metals under copper
can be extracted with
heat