Well, in the case of salts, those actually cause the melting point to drop (which, since it can no longer be solid at say 20°F, it melts, hence ice melter works; the melting and depression of melting point also causes cooling, hence salted ice for ice cream machines). Same way a little lead makes tin's melting point drop (the lowest melting point of the system is at
336°F IIRC - a far cry from the 450 or 620°F of either constituent).And as long as I'm dragging on... Things will easily freeze up while you move them -- they might not stick together well though. The motion breaks up bonds between grains of ice (or whatever) as it forms, making a slush. (Heh, take a look at slushy machines!)
Tim
-- "California is the breakfast state: fruits, nuts and flakes." Website:
formatting link