School of Nursing and Academic Division of Midwifery

RLO: Acids, Alkalis & Bases: An Introduction

Acidic Solutions

If extra H⁺ ions are added to the beaker, what will happen to the solution?

Drag the bars of the bar chart to indicate what will happen to the relative concentrations of H⁺ and OH^-.

Any solution with more H⁺ than OH^- is said to contain free H⁺ ions and is acidic.

On the pH scale, drag the arrow to indicate the range for acids.

The definition of an acid is: “ A substance with free hydrogen ions (H⁺) in solution.”

Acids have a pH < (less than) 7.