Why do solids have a definate shape and a definate volume?
we have invertibrate skelatons
Get a revision book idiot
What are the similarities and differences among solids liquid gases in terms of their shape volume and mass?
Solids have definite shapes, but they also have volume. The only things which have no volume are point particles such as the electron, but they don't have shape since they are infinitesimal. I don't think anything has both a definite shape and no volume. If the question was meant to ask about definite shape and volume, then the answer would be solids, which have both definite shape and definite volume.