Impressionism was a 19th century art movement that depicted the interaction between objective descriptions of the exterior world and the artists' subjective responses to what they saw and felt. Key works discussed include paintings by Monet, Degas, Van Gogh, Manet, Renoir, and Cézanne that show scenes of everyday life and focus on capturing fleeting moments. The document contrasts Impressionism with Realism and notes they differ in Impressionism focusing on a single moment while Realism depicts subjects as they appear in everyday life.