Learn why helium balloons deflate and sink. Explore the effect of temperature on gas density and use it to make a balloon float.
How Stuff Works
Is it true real snow doesn't melt when you put a lighter to it or try to set it on fire? Here's the answer and the science behind it.
Why Doesn’t Snow Melt When You Put a Lighter to ...
Learn about the difference between oxygen bleach and chlorine bleach. Compare the pros and cons of each type of bleach.
Oxygen Bleach vs Chlorine Bleach
Learn about mood ring colors including mood ring color meanings, how the colors are produced, and whether the rings work to tell emotions.
Mood Ring Colors and Their Meanings
Learn the causes and risks of yellow snow. Find out about other colors of snow, including red, green, and blue.
Yellow Snow Causes and Risks (And Other Snow Colors)
Stink bombs are products designed to release a stinky odor. Despite the name, they do not explode. Stink bombs are readily available as pranks, plus there are versions used for crowd control. Here is a look at how stink bombs work, the chemicals involved, and their safety. How Stink Bombs […]
How Do Stink Bombs Work? Are They Safe?
Salt makes ice water colder by lowering the temperature at which water freezes. So, more ice melts than forms. Melting ice absorbs energy, lowering the temperature.
Why Salt Makes Ice Colder – How Cold Ice Gets
Trick candles re-light themselves after you blow them out.
How Do Trick Candles Work?
Mixing bleach and ammonia produces toxic vapors that can incapacitate or kill you.