A grade 5 Covenant College student has set the Guinness World Record for fastest time to recite periodic table from memory.

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.

This Bitesize article features AQA chemistry past papers, explores practice questions and worked examples to help students prepare for the chemistry GCSE exams.