This paper deals  with physical properties of water and changes of them as result of the influence of approaching solids. The water molecule is very reactive and its chemical reactivity is influenced by the vicinal solid surfaces. Therefore, the knowledge of the properties of water near solid surfaces is important in understanding the nature and for industrial applications in various areas of techniques.

The properties of water layers on solid surfaces do not change exponentially with the change of layer thickness. Pores and in particular meso-and micropores seem to have an influence on the surface free energy and on the structure of water layers. The structure of bound water is formed dependent on the geometrical distribution of active centres and  their character. Thickness and structure of the vicinal water layers on the different solids results from the energetic heterogeneity ( free surface energy) and the structural heterogeneity (porosity) of these materials.

In this paper, a special attention has been paid to properties of bound water, the explanation of the cases of freezing point depression and boiling point change of water is dispersed porous solids, the thermal capacity and its role in an interfacial phenomena, conductivity of  bound water and also the changes enthalpy and entropy  function.