Home Educational Blogs Scientia Educare Blog Changing State: Evaporation Educational BlogsScientia Educare Blog Changing State: Evaporation By Scientia Educare - June 8, 2015 1308 0 FacebookTwitterPinterestWhatsApp Evaporation occurs when molecules in a liquid gain enough energy that they overcome attractions from other molecules and break away to become a gas. Adding energy increases the rate of evaporation.