Most glass right now is in a solid form. What's interesting about glass is that it keeps on getting harder and harder if you leave it at a specific temperature. Glass is also a liquid- it has a high viscosity. Some liquids have a very high viscosity and flow so slowly that by the time a can of liquid falls over there is time to pick it up before it spills! The ultimate example of a high viscosity liquid is glass. The viscosity of glass is so high that even though it's a liquid it looks like a solid. Believe it or not, but if you put pieces of smashed glass into a cup and left it there, and came back in a million years, you'd find the glass had flowed and taken a form like ice frozen from liquid water.