“…Similarly, it was reported in the studies done by Durmuş and Bayraktar (2010) and Eskilsson and Hellden (2003) that students think gases do not have any weight. Boz (2006), Griffiths and Preston (1992), Özmen (2011), Özmen, Ayas and Coştu (2002), Özmen and Kenan (2007), Pereira and Pestana (1991) and Valanides (2000) that they think when a liquid turns into gas state, size of the particulate will grow. Besides, Gabel, Samuel and Hunn (1987), Özmen (2011) and Özmen and Kenan (2007) determined that students in all grades and even teachers think the number of the particulates varies in different temperatures and phase change.…”