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2017724
Chemistry- bonding
Descripción
GCSE (CHEMISTRY) Seperate Science Mapa Mental sobre Chemistry- bonding, creado por Victoria Mahon el 12/02/2015.
Sin etiquetas
chemistry
bonding
unit 2
convalent
ionic
graphite
silicon dioxide
seperate science
chemistry
gcse
Mapa Mental por
Victoria Mahon
, actualizado hace más de 1 año
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Creado por
Victoria Mahon
hace más de 9 años
48
1
0
Resumen del Recurso
Chemistry- bonding
when chemical reactions take place, chemical bonds are made
this happens when an atom either shares or gains electrons
ionic bonding concept
gaining elecctrons
if you gain you become negative
if you loose you become positive
covalent bonding
strong covalent bonds within the molecules
weak forces of attraction between the molecule
sharing electrons
giant covalent structures
diamond
high melting and boiling points
diamonds a form of carbon that has a giant, rigid covalent structure, each carbons make four bonds.
large number of covalent bonds resluts in high boiling/melting points- makes it hard
strong covalent bonds between the two carbon atoms
Graphite
covalent bonds between 2 carbons
weak intermolecular force
graphite only makes three bonds
layers can easily slide over eachother
Silicon Dioxide
strong covalent bonds
salt
very high melting point
Afullerene
carbon atoms form fullerenes.
hexagonal rings
covalent bonds
no giant covalent structures
simple molecules
Giant ionic substances
mixture of positive and negative charged ions
high melting points
lot amount of energy to break it
must be dissolved in water for it to conduct
metals
giant structure
delocalised electrons surround positive ions
Hold structure allow the atoms to slide over eachother
metals can be shaped or bent
Recursos multimedia adjuntos
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