water
It doesn't. Water can dissolve the pill fast, but not as fast as soda because of all the acids in soda.
fast
Instant coffee granules dissolve faster in hot water than in cold water.
Most chemical salts dissolve faster in hot water than in cold water.
Much faster in boiling water.
It depends on the kind of the solid
It won't. Put powdered milk in cold water to dissolve.
In order to dissolve chalk in water, vinegar needs to be added. The vinegar has acid in it that eats away at the chalk to dissolve it.
Not all solids will dissolve in water at all. Those that do dissolve do so at different rates, and it's also temperature-dependent.
not as fast as water bleach or orange juice
Ice breaker would blow up in coke just like mentos i did that as a science experiment.
depends on your definition of hot