Sour Cotton Candy Acid Test Video

Here's another fun thing to acid test: sour cotton candy. Since the cotton candy sugar strands are so thin, they dissolve almost instantly, releasing the sour acid to react with the baking soda. The result? LOTS of bubbles.

Candy Experiments in Space!

No, I didn't jump on a spaceship (too bad). But here's a video of a candy experiment in space, in which a NASA astronaut sticks candy corns in a floating ball of water to demonstrate how surfactants work. It's pretty cool. You can read the whole article here.

Thanks to Samira Kawash at for sending me the link!

Why you shouldn't broil your candy

What your melting experiment looks like when you use the broiler because your oven's bake function broke.

M&M's math

Lots of bloggers write about graphing Skittles or M&M's. This pdf shows the variety of M&M's colors with percentages. I was surprised that brown (at 13%) was almost as common as red (13%) and yellow (14%), since I recently opened a small bag of M&M's that didn't have any browns at all. Thanks to Rachel of Momma Owl's Lab for posting the link to this pdf on her blog, as well as a great M&M's graphing experiment.

Creation Station: new Experiment Party idea

When I did an experiment party with several elementary school girls last week, I added a Creation Station as one of the experiment stops. Here we put all the candy we couldn't use for the other experiments (sink/float, acid test, and Find Hidden Candy), and encouraged the girls to build with it. They had a blast, creating all sorts of fun art, and it was a great way to use up the candy we couldn't experiment with. I highly recommend it for any candy experiments party!

Density experiment from Science Matters Blog

The former teacher and mom at Science Matters had a whole week of candy experiments before Halloween. Here's a great way to measure the density of candy. I've also played around with density measurements, and there will be some density experiments in next year's Candy Experiments book, but I found this one straightforward and easy to understand. The author also has lots of great ideas for demonstrations on erosion, cells, and refraction (I really wish I could test this one out!)

brown sugar no more

White sugar crystallizes. So what about brown sugar? My kids wanted to find out, so I dissolved a couple of tablespoons in a tablespoon of hot water, set it on the counter, and waited to see what happened. After a few weeks, this is what we got:

The sugar has formed into clear crystals, with a molasses-like liquid beneath them (you can see the brown puddle at the bottom of the tipped bowl.) But why?

It turns out that brown sugar isn't much different from white sugar. In fact, most brown sugar is just white sugar with a little molasses added. When you dissolve it, and let it recrystallize, the sugar molecules crystallize together, concentrating the molasses flavoring in the remaining liquid. The crystals have only a tiny molasses taste, which comes from the molasses coating I wasn't quite able to rinse off. If I could clean off the crystals before I tasted them, I'd be tasting pure sugar.

When I tell people I do candy experiments, they always ask if I make candy. My answer is always no. It's way more fun to take it apart!

Candy Corn Chemistry

A fun little video, shared by the American Chemical Society, on what goes into candy corn.

Candy Experiments on KOMO News

Here's the piece from KOMO TV's show featuring candy experiments. It's amazing how over an hour of filming gets condensed to two minutes! Our only question: why on earth does the reporter introduce candy experiments while standing in Greenlake?

Submerged Gummies

Gummi bears have really been in the news lately. Along with teenagers soaking them in alcohol, scientists are sinking them in the ocean to study the crushing effects of the deep sea waves. Read more about it here.

I do want to contest one fact in the article, which says "This might be the first time gummy bears have been destroyed in the name of science." We've been destroying gummi bears in the name of science for years now!

Post Halloween Candy Buys

If you see any "Fluffy Stuff Spider Web Cotton Candy" while scoping the after-Halloween sales, pick up a package. Since the only ingredients are sugar, citric acid, and artificial flavors, they're great for the acid test.

Pixy Stix are on sale too, at least in the post-Halloween aisle at my local drugstore. Those are really fun for acid testing.

Candy management tips from Candy Construction book

Here's another way to use up Halloween candy. Author Sharon Bowers has come up with lots of great crafts you can design with candy in her book Candy Construction: How to Build Race Cars, Castles, and Other Cool Stuff out of Store-Bought Candy.

Like me, Bowers has found that once she gets the kids excited about the candy project and turns them loose, they're not focused on eating it. She tells her kids no eating while building ("What construction worker snacks on the job?"), and lets them choose one piece of candy to set aside and eat after cleanup. Her final rule: "Candy construction workers always brush their teeth after work."

In my experience, letting the kids choose even one piece of candy to eat keeps them focused on eating, not testing, so my mantra is, "The candy is for experiments, it's not for eating." But it's nice to know that Bowers has also figured out ways to get children to play with candy instead of eating it. It really is possible to redirect kids' candy mania, and find alternative ways for them to enjoy their candy.

A cleanup tip

After doing three candy experiment demos in five days, I've learned I really need to pack a bunch of rags. School paper towels just don't cut it when you're trying to mop up somebody's sticky spilled experiment. And have the rags ready at hand--we wasted a lot of time running to and from the paper towel dispenser during my son's Halloween party.

Really original trick-or-treat idea!

Here's a family who passed out water and oranges at a Halloween Hydration Station, and the trick or treaters had a great time! That's probably the healthiest Halloween handout I've ever heard of.