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Macromolecules have giant covalent structures.
Their atoms are arranged into giant lattices, which
are strong structures because of the many bonds
involved. Substances with giant covalent structures
have very high melting points, because a lot of
strong covalent bonds must be broken.
WHAT IS A
MACROMOLECULE…read more

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3 TYPES OF MACROMOLECULES
DIAMOND
GRAPHITE
SILICA…read more

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DIAMOND
Diamond is a form of carbon in which each
carbon atom is joined to four other carbon
atoms, forming a giant covalent structure. As
a result, diamond is very hard and has a high
melting point. It does
not conduct electricity.…read more

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GRAPHITE
Graphite is a form of carbon in which the
carbon atoms form layers. Each carbon atom
in a layer is joined to only three other carbon
atoms.The layers can slide over each other
because there are no covalent bonds
between them. This makes graphite much
softer than diamond. It is used in pencils and
as a lubricant. Graphite conducts electricity.…read more

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SILICA
Silica, which is found in sand, has a similar
structure to diamond. It is also hard and has
a high melting point. However, it contains
silicon and oxygen atoms instead of carbon
atoms.…read more

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