The following are the common features of glassIt is amorphous.It does not have a fixed melting point.It is a transparent or atopic solid material.It is the non-conductor of electricity.It does not react with air, water and acids.An exception to this is HF which transforms silica into SiF4.It is affected by Alkalis.It is brittle.It melts and becomes soft on heating.It has high compressive strength.Objects of different shapes can be made from it.