Hey, I just finished a lab on classifying solids based on their physical properties. I was just curious about some of the solids that I investigated. Wax (a non-polar molecular solid) and salt (ionic solid) were pretty weak -either melted or dissolved compared to network solids like clay and sand. Why is this? So do people never use these types of things to build or do anything practical with because tehy break, why do they break :S it baffles me. I suppose I didn't fully understand that concept. And also, I don't understand how you can have soft metals and hard metals. Why cant you build things with any kind of metal,I meant once you use enough of it, Can''t it be strong enough. Or do we just use some metals because they are cheaper or you need to use less. HOW can metals be strong :) My teacher draws really confusing diagrams with electrons and bonding, does anyone know what he might mean by these pictures?