Acid-base indicators change color depending on the acidity or alkalinity of a solution, allowing us to visually distinguish between acids and bases based on the color change.

Adding water to a concentrated acid can lead to rapid heat generation, potentially causing splashing, burns, and even breakage of glass containers due to the violent reaction.

Dilution is the term used to describe the process of decreasing the concentration of ions (H3O+ or OH-) per unit volume when mixing an acid or base with water.

Warning signs indicating the hazards of the substances should be observed on the containers of concentrated sulfuric acid and sodium hydroxide pellets.

Concentrated acids should always be added slowly to water with constant stirring to prevent splashing and excessive heat generation.