The carbon atom is unique among elements in its tendency to form extensive networks of covalent bonds not only with other elements but also with itself. ... Moreover, of all the elements in the second row, carbon has the maximum number of outer shell electrons (four) capable of forming covalent bonds.
<u>The pressure of a given amount of gas is directly proportional to its absolute temperature, provided that the volume does not change (Amontons's law)</u><u>.</u>
<u> The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law).</u>