We all know how common elements like oxygen and helium are used in every day life. But gallium? Selenium? Rhodium? Keith Enevoldsen has created an interactive periodic table that illustrates exactly where you may encounter even obscure elements on the chart. It’s like taking high school science all over again, except without the tests, and you’re welcome to keep using your phone.

[Elements.wlonk.com via Twitter - Corey S. Powell]