While pure water will boil without much problem in Styrofoam, water containing dissolved solids such as sugar or salt will boil at a higher temperature and may melt the Styrofoam.
(pure water; will boil; ) (water; containing; dissolved solids such as sugar or salt) (water containing dissolved solids such as sugar or salt; will boil; L:at a higher temperature)
pure water water water containing dissolved solids such as sugar or salt
will boil containing will boil
dissolved solids such as sugar or salt
L:at a higher temperature