Here's a breakdown:
* Acids: Release hydrogen ions (H+) when dissolved in water. The higher the concentration of H+ ions, the stronger the acid.
* Bases: Accept hydrogen ions (H+) or release hydroxide ions (OH-) when dissolved in water. The higher the concentration of OH- ions, the stronger the base.
The pH scale is used to measure the acidity or alkalinity of a solution. A lower pH value indicates a higher concentration of H+ ions (more acidic).
