Halloween Chemistry Demonstrations

Chem Demos for Halloween

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Helmenstine, Anne Marie, Ph.D. "Halloween Chemistry Demonstrations." ThoughtCo, Oct. 10, 2016, thoughtco.com/halloween-chemistry-demonstrations-607786. Helmenstine, Anne Marie, Ph.D. (2016, October 10). Halloween Chemistry Demonstrations. Retrieved from https://www.thoughtco.com/halloween-chemistry-demonstrations-607786 Helmenstine, Anne Marie, Ph.D. "Halloween Chemistry Demonstrations." ThoughtCo. https://www.thoughtco.com/halloween-chemistry-demonstrations-607786 (accessed September 25, 2017).
Try a Halloween chemistry demo. Make a pumpkin carve itself, turn water into blood, or perform an oscillating clock reaction that switches between the Halloween colors of orange and black.
Making dry ice fog is a classic Halloween chemistry demonstration.
Making dry ice fog is a classic Halloween chemistry demonstration. GUSTOIMAGES, Getty Images
Make smoke or fog using dry ice, nitrogen, water fog or a glycol. Any of these Halloween chem demos can be used to teach important chemistry concepts relating to phase changes and vapor. More »
Use a pH indicator to turn water into blood for Halloween.
Use a pH indicator to turn water into blood for Halloween. Tetra Images, Getty Images
This Halloween color change demonstration is based on an acid-base reaction. This is a good opportunity to discuss how pH indicators work and to identify chemicals which can be used to elicit color changes. More »
Orange Liquid in a Flask - Old Nassau Reaction or Halloween Reaction
Orange Liquid in a Flask - Old Nassau Reaction or Halloween Reaction. Siri Stafford, Getty Images
The Old Nassau or Halloween reaction is a clock reaction in which the color of a chemical solution changes from orange to black. You can discuss how an oscillating clock is made and what conditions might affect the rate of oscillation. More »
This is a dry ice bubble.
If you coat a container of water and dry ice with bubble solution you will get a bubble that sort of resembles a crystal ball. Anne Helmenstine
This is a dry ice Halloween demonstration in which you make a sort of crystal ball using bubble solution filled with dry ice. What is neat about this demonstration is that the bubble will achieve a steady-state condition, so you can explain why the bubble reaches a size and maintains it rather than popping. More »
Igniting acetylene gas produced by a chemical reaction blows the face out of a pumpkin.
Igniting acetylene gas produced by a chemical reaction blows the face out of a pumpkin. It's like the pumpkin carves itself!. Allen Wallace, Getty Images
Use an historically important chemical reaction to produce acetylene gas. Ignite the gas in a prepared pumpkin to cause the jack-o-lantern to carve itself! More »
Use science to turn ordinary gummy worms into Frankenworms.
Use science to turn ordinary gummy worms into Frankenworms. Lauri Patterson, Getty Images

Turn boring lifeless gummy worms into creepy zombie Frankenworms using a simple chemical reaction. More »

Make a blade appear to bleed using a trick of chemistry. No actual blood is necessary!
Make a blade appear to bleed using a trick of chemistry. No actual blood is necessary!. Jonathan Kitchen, Getty Images
Here's a chemical reaction that appears to make blood (but really it's a colored iron complex). You treat a knife blade and another object (such as your skin) so that when the two chemicals come into contact "blood" will be produced. More »
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This jack-o-lantern is lit from within by green fire.
This jack-o-lantern is lit from within by green fire. Anne Helmenstine
There's something eerie about green fire that just screams "Halloween." Explain how flame tests work then illustrate how metal salts can affect a fire by using a boron compound to produce green flames. Perform the reaction inside a jack-o-lantern for added effect. More »
Goldenrod paper is a special paper containing dyes that react to pH change.
Goldenrod paper is a special paper containing dyes that react to pH change. A basic pH makes the paper appear to bleed. Paul Taylor, Getty Images
The dye used to make goldenrod paper is a pH indicator that changes to red or magenta when exposed to a base. If the base is a liquid, it looks as though the paper is bleeding! Goldenrod paper is great anytime you need inexpensive pH paper and perfect for Halloween experiments. More »
Format
mla apa chicago
Your Citation
Helmenstine, Anne Marie, Ph.D. "Halloween Chemistry Demonstrations." ThoughtCo, Oct. 10, 2016, thoughtco.com/halloween-chemistry-demonstrations-607786. Helmenstine, Anne Marie, Ph.D. (2016, October 10). Halloween Chemistry Demonstrations. Retrieved from https://www.thoughtco.com/halloween-chemistry-demonstrations-607786 Helmenstine, Anne Marie, Ph.D. "Halloween Chemistry Demonstrations." ThoughtCo. https://www.thoughtco.com/halloween-chemistry-demonstrations-607786 (accessed September 25, 2017).