Daily Archives: May 29, 2013


Colored Soap Bubble (brokenchopstick, Flickr) 1
Clear bubbles are a lot of fun, but you can make colored soap bubbles, too. Here’s a recipe for pink or blue colored bubbles, based on disappearing ink (a type of acid-base indicator), so the bubbles won’t stain surfaces when they land. Colored Bubble Materials Liquid Dishwashing Detergent (or other […]

Make Homemade Colored Soap Bubbles


Sparkler (Anne Helmenstine) 1
All fireworks are not the same. For example, a firecracker and a sparkler are very different. A firecracker creates a noisy controlled explosion. A sparkler, on the other hand, burns over a long period of time (up to a minute) and produces a brilliant shower of sparks. Sparklers are sometimes […]

How Sparklers Work




Here’s an alphabetical list of elements named for astronomical objects, or perhaps from the gods/goddesses for which the objects were named. Most names come from planets, the moon, and the sun, since these objects are easily seen in the sky. Cerium – Ceres, the first asteroid to be discovered. Roman […]

Elements Named for Celestial Bodies


Crystal Garden (Anne Helmenstine) 1
The charcoal crystal garden is a classic crystal-growing project. You use charcoal briquettes, cardboard or a sponge, ammonia, salt, bluing, and food coloring to grow a crystal garden. The components of the garden are not edible, so adult supervision is recommended. Materials charcoal briquettes, cardboard, or pieces of sponge or […]

Charcoal Crystal Garden