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This is a demonstration and explanation of Tollen's test to distinguish between aldehydes and ketones. The experiment featured in this video uses formaldehyde (methanal) and acetone (propanone) to show the result of the Tollen's test on both. There is a brief description of how Tollen's reagent is made and an short explanation of why an aldehyde will show a positive result but a ketone will not.

This is a demonstration of how nitrating cotton can affect its chemical properties. If you have ever burned cotton wool, you will know it burns readily but slowly, and will leave a mess of carbon (unburned material) behind. The reason for this mess is that the oxygen in the air has to meet the cellulose (and other) molecules. The cellulose molecules have to break into their components (carbon, ...