States of matter Common States of Matter Solids
In a 'solid', the positions of atoms are fixed relative to each other over long time. This cohesion is provided by metallic, covalent or ionic bonds. Only solids can be pushed on by a force without changing shape, which means that they can be resistant to deformation. Solids also tend to be strong enough to hold their own shape in a container. Solids are generally denser than liquids.