i>Ice floats on water, thus it is a solid. ii>Density of a substance in solid is more than in the liquid state.

Asked by  | 25th Jul, 2013, 08:50: PM

Expert Answer:

i> Ice floats on water, thus it is a solid.
*Each water molecule is bent  due a specific property of Oxygen called Electronegativity.[H - O
                                                                                                                              l
                                                                                                                             H ]
*Owing to this bent shape the adjacent water molecules get bonded together by another specific bond called Hydrogen Bond.
* This hydrogen bonding forms cage like structures, enclosing air within.
*Due to this , despite being a solid, Ice floats on water.
 
H - O  --H - O  --H - O---
     l            l           l
    H           H          H
    l             l           l
H -O  --H - O  --H - O---
     l            l           l
    H           H          H
 
 
ii> Density of a substance in solid is more than in the liquid state.
     Density  = Mass / Volume.
       Since solids have particles packed closely, the mass per unit volume being high, density is high. 

Answered by  | 25th Jul, 2013, 10:27: PM

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