A little chemistry can add a lot of ghastly, ghostly effect to your Halloween celebration. Here's a look at some of the top Halloween projects you can do that apply your command of chemistry. The best part? You don't even need to be a chemist. These Halloween projects involve everyday chemistry that anyone can do!
You don't need a knife or a candle to create this eerie jack-o-lantern face. It's surprisingly quick and easy to make a phosphorescent pumpkin for Halloween.
I think we can all agree it's best to use fake blood for your Halloween celebration. Of course, you can buy fake blood, but if you make your own you can control the exact color and consistency (plus it's simply fun to make fake blood).
There are a few different ways to create creepy Halloween fog. Dry ice fog is nice because it's non-toxic, doesn't have a weird chemical smell (like smoke machine juice), and billows out tons of fog that naturally sinks to the floor.
If floating a candy eyeball in a punchbowl is a little too tame for you, try making Glowing Hand of Doom punch. This punch is fizzy, glows, and produces fog. What more could you ask for? It even tastes good!
Putting a tealight in a jack-o-lantern produces a nice, cheery glow. If you really want to scare away the evil spirits, don't you think a burst of green fire would work better? I thought so, too.
... and then back into water. This is a classic color-change chemistry demonstration that you can use as a holiday pH indicator demonstration or as a really cool effect at a Halloween party... or both.
A real crystal ball is pretty cool, but I would argue this dry ice crystal ball is even cooler because (a) it's literally icy cold and (b) it contains swirling whorls of fog, which you just don't see in a real crystal ball unless maybe you're psychic. You could make the effect even more spectacular by placing a small LED light into the container.
Ectoplasm is that goo left behind when ghosts interact with the realm of the living. This stuff is relatively non-sticky, so feel free to decorate yourself with it, your home... you get the idea.
If you stuff your jack-o-lantern with smoldering leaves, I am sure it will produce a lot of attractive smoke. However, it will smell like fire and I think most people will assume you are using a defective candle rather than trying to achieve a spooky effect. On the other hand, filling your pumpkin with dry ice fog will be eerie and spooky.
Humans have red blood, but many other creatures don't! If your Halloween theme involves spiders or perhaps aliens, you might want to try this edible blue or green blood recipe.