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4203151
Metals
Descrição
National 5 Chemistry (Unit 3) Mapa Mental sobre Metals, criado por Rosa Donaldson em 09-12-2015.
Sem etiquetas
chemistry
unit 3
national 5
Mapa Mental por
Rosa Donaldson
, atualizado more than 1 year ago
Mais
Menos
Criado por
Rosa Donaldson
mais de 8 anos atrás
12
2
0
Resumo de Recurso
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
Anexos de mídia
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