“…However, until now studies of students' understanding of solution chemistry have focused on some particular topics: the dissolution concept (Abraham et al, 1992(Abraham et al, , 1994Cosgrove & Osborne, 1981;Çalık & Ayas, 2005;Ebenezer & Erickson, 1996;Ebenezer & Gaskell, 1995;Longden, Black & Solomon, 1991;Prieto, Blanco & Rodriquez, 1989;Smith & Metz, 1996), the nature of solutions (Prieto et al, 1989;Fensham & Fensham, 1987), solubility (Ebenezer & Erickson, 1996;Gennaro, 1981), energy in solution processes (Ebenezer & Fraser, 2001;Liu, Ebenezer & Fraser, 2002), the effects of temperature and stirring to dissolution of solid into liquid (Blanco & Prieto, 1997), conservation of mass during dissolution process (Drıver & Russell, 1982;Holding, 1987), structural characteristics , types of solutions (named as unsaturated, saturated and supersaturated solution concepts), the concept of vapor pressure lowering, solubility of a gas in water and the relationship between vapor pressure and boiling point (Pınarbaşı & Canpolat, 2003). Research also has considered strategies to overcome alternative conceptions about solution chemistry (e.g., Ebenezer, 2001;Ebenezer & Gaskell, 1995;Johnson & Scott, 1991;Kabapınar, Leach & Scott, 2004;Kaartinen & Kumpulainen, 2002;Taylor & Coll, 1997). Pınarbaşı and Canpolat (2003) focused on types of solutions (unsaturated, saturated and supersaturated solutions), the concept of vapor pressure, solubility of a gas in water and the relationship between vapor pressure and boiling point.…”