School › Teeth
Teeth
Milk teeth and adult teeth, cutting and grinding, enamel, dentin and pulp, how sugar and bacteria make acid, and the chemistry of hydroxyapatite and fluoride. Three ages, each with a text, an eggshell experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6–7My teethMilk teeth and adult teeth, what different teeth do, and why sugar and germs are bad news for teeth. With an eggshell-in-vinegar experiment.Ages 10–11Inside a tooth and how decay happensThe four kinds of teeth, the parts of a tooth, plaque and acid, and how enamel repairs itself. With a fair test of drinks on eggshells.Ages 15–16The chemistry of tooth decayHydroxyapatite, pH and the critical pH, Le Châtelier's principle, fluoroapatite and parts per million. With a quantitative eggshell investigation.