By Michael sulak
Atoms want to combine together because they have a lower potential energy than when they are alone. They want to combine because they would have a lower potential energy and nature likes that because it's more stable than being alone.
Metal and nonmetal elements bonding together. (They lose or gain electrons)
Traits: looks powdery, dissolves in water, high melting point, conducts as a liquid and in water but doesn't as a solid.
Nonmetal and nonmetal elements bonding together. (They share electrons)
Traits: looks powdery, sometimes dissolves in water and sometimes doesn't, low melting point, NEVER conducts electricity.
EXAMPLE: Water (H2O)
Metal and metal elements joining together.
Traits: looks shiny, doesn't dissolve in water, high melting point, always conducts electricity.
EXAMPLE: bronze (Copper and other metals)