Here is a good example of this process: Take a cup of water, pour it into a pan and place it on a stove without heat. Now start adding table salt and stir. Notice you can only dissolve so much table salt in the water. If you turn on the heat, you will discover that as the water heats up, more and more salt can be dissolved. As more salt dissolves in the water, the boiling point of the salt/water solution goes up beyond the boiling point of plan water, which is 212 degrees Fahrenheit. The hotter the solution the more salt that can dissolved, and the higher the temperature at which it boils.