A liquid container (10) has a base portion (12) and a cap portion (14) which are engaged with one another for relative slidable linear movement. The cap has an upwardly facing recess (29). Initially, the cap portion (12) and the base portion (13) define a hermetically sealed chamber (42) containing a liquid (40). Upon relative movement of the cap portion (14) and the base portion (12), the base enters the chamber (42) and the hermetic seal is broken so that the liquid (40) is urged into the recess (29) of the cap portion (14).
