These are thoroughly differentiated resources designed for an AS level chemistry lesson on reduction of carbonyl compounds. Objectives are framed as learning questions and graded C to A. There are clear AFL plenaries using mark schemes. There is a graded Who Wants to be a Millionaire quiz for an end plenary. The starter is an engaging scents demo using butanal (pleasant) and butanoic acid (rancid butter). Pace and student effort is the key to delivering an outstanding lesson using these resources. Mark schemes can be printed. Please rate this resource and leave feedback.