Chemistry · Chapter 5: Acids, bases and solutions
Year 11 Science · About 15 minutes with activities · Turn your sound on
Chapter 5 recap
- pH is a measure of the acidity or alkalinity of an aqueous solution. H⁺ > OH⁻: acidic, pH < 7 · H⁺ = OH⁻: neutral, pH 7 · OH⁻ > H⁺: alkaline, pH > 7. Each pH unit is a factor of 10.
- Neutralisation: a reaction between an acid and a base to form salt and water. H⁺ + OH⁻ → H₂O.
- Dissolving: a solute dissolves in a solvent to form a solution. The ions separate, are surrounded by water molecules, and are more attracted to the water than to each other.
In Chrome this uses Google’s voice; other browsers use the recorded voice. Your choice here is remembered.