======Light a Match With Superheated Steam====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Steam vs Paper and Matches ====Summary==== {{$demo.summary}} ====Procedure==== - Generate steam at atmospheric pressure by boiling water in a flask or tin. - Direct the steam through a length of flame heated copper tubing, which raises the steam temperature well above 100 °C, producing superheated steam. - Hold a piece of paper in the path of the superheated steam and observe its effects. - Repeat with an unlit match to. ====Links==== Lighting a match with water - The Royal Institution: {{youtube>f6QR2AN6_es?}}\\ Igniting matches & combusting paper using steam - SciTubeHD: {{youtube>1F4AnyNq4Xc?}}\\ ====Variations==== * Test the effect of superheated steam on different materials such as cloth, cardboard, or wood. * Compare the behavior of saturated steam versus superheated steam on the same material. ====Safety Precautions==== * Superheated steam is extremely dangerous - it is invisible and can cause severe burns. * Wear heat-resistant gloves, face shields, and lab coats when performing the demonstration. * Keep combustible materials at a safe distance except when being tested. * Ensure copper tubing and heating elements are securely mounted and handled with caution. * This demonstration should only be performed by trained professionals in a controlled laboratory setting. ====Questions to Consider==== * Why does superheated steam behave differently from regular steam? (Superheated steam has a much higher temperature, so it can ignite or char materials more easily.) * Why doesn’t steam at 100 °C have the same effect on paper? (At 100 °C, saturated steam transfers heat less intensely than superheated steam, which contains more thermal energy.) * How is superheated steam used in industry? (It is used in power generation, sterilization, and chemical processing because of its high energy content.)