The volume remain unchanged.
It floats.
They die
they will die
The concentration of salt increase up to saturation.
Salt will dissolve in water. Adding salt will lower the temperature of water by a few degrees Celsius as well as lower the freezing point.
adding salt raises the boiling point of water which can help speed cooking time.
Nothing...they die....
It's because the salt disolves into the water instead of adding more volume to it. The salt molecules are "taken apart" (dissociated) by the water molecules, and they are converted into Na+ and Cl- ions. These ions can fit "between" the water molecules, and can do so without increasing the volume of the solution. More salt can be added without increasing the volume, too. That is until saturation is reached, and then no more salt will go into solution. Adding additional salt beyond this point will increase the volume.
Your skin gets wet and salty
When salt is added to water, it dissolves and forms a solution. This occurs because the water molecules surround the salt ions, breaking the ionic bonds and allowing the salt to mix evenly throughout the water.
The salt draws the water out of the bacteria. This causes them to shrivel up and die, literally. This is why people use saline solution on piercings and gargle salt water.
Sodium chloride is dissolved and dissociated in water.