Answer:
Concentration: The amount of a given substance within a set solution.
Explanation:
For example, the units for concentration include mol/[tex]dm^{3}[/tex] which means that if a substance has 3 mol/[tex]dm^{3}[/tex], it means 3 moles of that substance is in a 1 dm cubed of that solution. You could give examples of the concentration of acids like Hydrochloric Acid (HCl) and alkalis like Hydroxide (OH).