Please Answer.I have exam????

Question

Strength is one characteristic of matter, and the strength is determined by the bonding associated with each element or molecule. Diamonds, the hardest of substances, and graphite, one of the weakest, are both composed of carbon. What force or bond is associated with each?

Answer 1

Graphite has the same chemical formula as diamond (C), yet the two minerals could hardly be more unlike. Diamond is the hardest of minerals, graphite one of the softest; diamond is transparent, graphite opaque; and diamond is almost twice as dense as graphite. These radically different properties arise from the way the atoms are arranged in each substance. In graphite, carbon atoms are linked in hexagonal sheets resembling chicken-wire fencing. These sheets slide over each other easily, which accounts for graphite's slipperiness. In diamond, carbon atoms are linked in a potentially endless matrix of tetrahedra (four-cornered pyramids), an extremely strong arrangement. Surprisingly, however, graphite is stable under ordinary atmospheric conditions and diamond is not; that is, at standard temperature and pressure diamond transforms spontaneously to graphite. The rate of transformation is extremely slow because carbon atoms organized into diamond are separated from the lower-energy graphite state by an activation-energy barrier similar to that which keeps an explosive from going off until triggered by a spark.

Answer 2

Carbon needs four more electrons to complete its outer shell. Whether it a diamond or graphite, you have covalent bonding going on because each carbon is sharing its electrons with the next, and lots of these interacting carbons forms sheets or layers in a lattice structure.

Answer 3

u should ask ur teacher or parents for help if you can't isn't this cheating? try go on google and type in help with science......

Answer 4

both have triple bonds

Answer 5

kinetic energy of course

Answer 6

sorry dont know what your on about!!