· Why does salt dissolve, and why does it appear to be cubic shaped?
· Why does iodine sublime rather than melt and boil?
· Why do metals form crystals and conduct electricity?
· What happens when metals are beaten into shapes and pulled out into wire?
· Why, if they are both made of carbon, is diamond so hard and graphite so soft?
· If small molecules are gases at room temperature, why then is water a liquid at room
· test your understanding