Answer the following question given this paragraph: 

The sodium chloride dissociates into two ions, while the glucose does not dissociate. Therefore, equal concentrations of each solution will result in twice as many dissolved particles in the case of the sodium chloride. The vapor pressure of the sodium chloride solution will be lowered twice the amount as the glucose solution.


Q: How many different kinds of ions are produced when sodium chloride dissociates ?


A:
two