Properties of a solution that depend only on the ratio of the number of particles of solute and solvent in the solution are known as:

intensive properties

extensive properties

colligative properties

chemical properties

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.