Fill in the Blanks WATER STATESOnline version VOCABULARY by VERONICA MOLINA 1 MELTING EVAPORATION FREEZING CONDENSATION - If we cool water vapour , it condenses into a liquid . - If we freeze water , the liquid changes into a solid called ice . - If we heat ice , it melts and changes back into a liquid . - If we heat water , the liquid changes into a gas called water vapour .