Determination of electrical conductivity:

relationship between the electrical conductivity and the type of intermolecular force of attraction existing between the molecules

Metals include elements such as, iron, copper, chromium, titatium, etc., I'm sure you know what a metal and non-metal is by looking at your periodic table.

melting is breaking the bonds in the crystals. Thus, what does that mean? The stronger the bonds are, the harder to break and therefore the higher the melting point.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.