======Non-Burning Money====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Non-Burning Dollar Bill ====Summary==== {{$demo.summary}} ====Procedure==== - Prepare a non-burning solution by mixing equal parts alcohol (ethanol or isopropyl) and water in a bottle. Add 2–3 tablespoons of table salt to make the flame more visible. - Set up two tubs: one filled halfway with water and the other with a thin layer of the non-burning solution. - Soak a dollar bill or paper in the alcohol-water solution until fully saturated. - Put on safety glasses. - Using tongs, hold the soaked bill or cloth over the tub of water. - Ignite it and observe as the alcohol burns with a visible flame while the bill remains intact. - Extinguish by dunking the bill briefly in water before handling it. - Ask students why the bill did not burn despite being in flames. ====Links==== Burning Money - Cool Science Experiment - Spangler Science TV: {{youtube>jh5Cc4ffN8c?}}\\ Chemistry Demonstration - How to Set a Dollar on Fire and Keep it from Burning - PBS News Hour: {{youtube>1A4CLaC4g9c?}}\\ 📄🎞️ Non Burning Money - Michigan State University: [[https://pa.msu.edu/science-theatre/demos/non-burning-money.aspx]]\\ 📄 Non-Burning Dollar Bill - JMU Chemistry Demonstrations: [[https://sites.lib.jmu.edu/chemdemos/]]\\ ====Variations==== * Use cloth instead of a dollar bill for a larger, more visible effect. * Compare results using different alcohol concentrations (e.g., 70% vs. 50%) to show the role of water. ====Safety Precautions==== * Always wear safety glasses. * Keep the bottle of alcohol-water solution capped and well away from the flame. * Perform in a controlled environment with no open flames nearby. * Handle burning materials only with tongs and extinguish immediately in water. ====Questions to Consider==== * Why does the alcohol burn while the dollar bill stays unharmed? * What property of water allows it to protect the bill from burning? * How would the outcome change if only alcohol was used without water? * What role does heat capacity play in this demonstration? * Why is it important to mix the alcohol with water rather than use pure alcohol?