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C3 How bonding and structure are related to the properties of substances …
C3 How bonding and structure are related to the properties of
substances
States of matter
what are the state changes
what are the limitations of this model?
explain the state changes in terms of particle theory
what affects how high or low the melting and boiling points are?
state symbols
solid
liquid
gas
aqueous solution
Properties of ionic compounds
why do they have high melting points and high boiling points?
why can they conduct electricity when melted or dissolved in water?
Properties of small molecules
Substances that consist of small molecules are usually gases or liquids that have relatively low melting points and boiling points
why do they have relatively low melting and boiling points?
what happens to the melting and boiling points as the molecules increase in size?
why can they not conduct electricity?
Polymers
why are polymers solid at room temperature?
Giant covalent structures
why do they have high melting points?
diamond
diagram
explain the properties of diamond in terms
of its structure and bonding
graphite
graphene
explain the properties of graphene in
terms of its structure and bonding
diagram
fullerine
diagram
describe the structure eg Buckminsterfullerene (C60 )
uses of fullerenes, including carbon
nanotubes
explain the properties of graphite in terms
of its structure and bonding
diagram
why can graphite conduct electricity?
silicon dioxide
diagram
Metals and alloys
why do they have high melting and boiling points?
how are the atoms arranged in metals?
how are the atoms arranged in alloys?
why are alloys harder than pure metals?
why are metals good conductors of electricity and heat?
