Most of the parts will fall off because they are no longer needed. Stamen and petals will fall off (I cannot think of a plant where this doesn't happen). Sepals may or may not fall off. Think of a strawberry or a tomato. The leafy structures on these fruit are actually the remnants of the sepals.
Some pills are completely water soluble and therefore would dissolve in water faster than other liquids which are a mixture of water with other compounds. In some cases the sugar in Kool Aid and in Cola may cause some inhibition of the dissolution process.
'K4's are very small, yellow, easily crushed pills that contain 4 milligrams of hydromorphone under the brand name DILAUDID. They are very valuable because the pills do not contain any crap, binder, or harmful filler ingredients. Everything in the pill is safe to inject directly into your veins. A crushed pill will even dissolve in cold water! Dilaudids allow uniquly fast and easy prep for injection. Despite the cost ~$20 each; this drug is extremly popular.