The dual coding theory proposed by Paivio attempts to give equal weight to verbal and non-verbal processing. Paivio (1986) states: Human cognition is unique in that it has become specialized for dealing simultaneously with language and with nonverbal objects and events.
Therefore, high temperatures are required to break these strong bonds to turn it into a liquid state â¦ . Thus the melting point of graphite is high, same goes for diamonds. Even though it is a covalently bonded compound, these 2 examples are the only ones that have high melting points. The melting point of graphite is 3500 c and 6332 f, specific gravity is 2.25, pounds per cubic inch is .812, 21 people found this useful.
Graphite is used for its thermal insulation (lower rate of heat transfer) properties. It is also a very good conductor or electricity. The carbon atoms in graphite are bonded in flat hexagonal lattices and layered in sheets. Carbon is the 4th most common element in the Universe (after hydrogen, helium and oxygen). It is the 15th most common element in the Earthâs crust while it is the second most common element in the human body (behind oxygen). Carbon has the highest melting point of all elements, around 3500 Â°C (3773 K, 6332 Â°F).