Why does salt water dissolve faster than distilled water?
Actually, your experimental results do not follow expectations. You may have some variable in your experiment that was not controlled. Adding salt to water actually produces what is called boiling point elevation, you would expect the salt water to boil at a higher temperature. Salt decreases the vapor pressure of the water/salt solution and then requires more energy to boil. If you happened to have a very saturated salt solution and still had some undissolved salt in the bottom of the beaker, then that could cause it to boil earlier because it gives a nucleation site to produce the vapor bubbles.
