This PowerPoint presentation provides a comprehensive overview of aldehydes and ketones, focusing on their oxidation and reduction reactions. It includes detailed mechanisms for the reduction of aldehydes and ketones to alcohols using sodium borohydride (NaBH₄) and covers key concepts such as nucleophilic addition. The presentation also reviews the oxidation of alcohols to aldehydes and ketones, with practical examples and practice questions to reinforce learning. Ideal for A-Level chemistry students and educators, this free resource simplifies complex organic chemistry concepts and enhances understanding of reaction mechanisms.