Monthly Archives: June 2015


The striped bark scorpion glows under black light. (Ralph Arvesen) 5
Have you ever noticed a lot of common stuff glows under┬áblack light or ultraviolet light. What things have you seen glow in the dark? Offer your idea or read about glowing materials observed by other readers. Ground up Vitamin B Tablets Glow Under Black Light When one ground up pill […]

Stuff That Glows Under Black Light



While taking chemistry class isn’t very funny, there are a lot of great chemistry jokes and puns! I started a running list of reader-submitted chemistry jokes over on About.com chemistry, but ran out of room for all the submissions. Here are the rest of the jokes. You’re welcome to post […]

Chemistry Jokes and Puns



Discovery Periodic Table Black Background
Have you ever wondered when, exactly, each of the chemical elements was discovered or first synthesized? These periodic table wallpapers contain the dates of discovery of each element. Each element is identified by their atomic number, symbol, name and discovery date. The colors correspond to the different eras of chemistry. […]

Periodic Table of Element Discovery Dates


Red Apple With Seeds (liz west) 14
Eating apple seeds, peach seeds or cherry pits is controversial. Some people believe the seeds and pits are toxic because they contain a cyanide-producing chemical, while other people believe the seeds are therapeutic. Have you eaten apple seeds or cherry pits? Did you experience any effect from eating the seeds? […]

Have You Eaten Apples Seeds or Cherry Pits?





Shiny Circles Periodic Table Wallpaper in Space
One of the favorite periodic tables is the Periodic Table with Circle Tiles. This set of periodic table wallpapers revisits the periodic table circle tiles and kicks it up a notch. Each circular tile looks like a shiny glass covered button. The colors represent the different element groups and each […]

Periodic Table Circle Buttons Wallpaper


Need a periodic table PDF? Here are a collection of free periodic tables to download to your computer, tablet, or phone to print whenever you need one. For printing, you’ll get the best results if you choose the landscape or “fit to page” options. Muted Color Periodic Table PDF This […]

Periodic Table PDF