### Matter in Our Surroundings

goals
During distillation of iodine and methyl alcohol, the non-volatile substance is Iodine.
_____ have a definite shape and volume.
The freezing point of a aqueous solution of $KCN$ containing $0.1892$ mole/kg $H_2O$ was $-0.704^o$C. On adding $0.095$ mole of $Hg(CN)_2$, the freezing point of the solution was $-0.53^o$C. $Hg(CN)_2$ is the limiting reactant.
$Hg(CN)_2+m CN^-\rightarrow Hg(CN)^{m-}_{m+2}$
In chromatography the filter paper is:
Write difference between boiling & evpaoration?