Triangle (State of Matter)SolidLiquidGasRectangle (Terms for change)MeltingFreezingCondensationEvaporationSublimationOblong (What happens when...)When solid is heated → becomes liquid (Melting)When liquid is cooled → becomes solid (Freezing)When gas cools → becomes liquid (Condensation)When liquid is heated → becomes gas (Evaporation)When solid becomes gas directly → (Sublimation)