Organization of chemical elements. Play The Periodic Table trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play.
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This element with atomic number 1 is the lightest and most abundant in the universe.
This noble gas fills party balloons and makes your voice sound squeaky when inhaled.
This element with symbol Au has been treasured for jewelry and currency for thousands of years.
This gas makes up about 78% of Earth's atmosphere and is essential for making fertilizers.
This element with symbol O is what we breathe and need to survive.
This silver-colored liquid metal is used in traditional thermometers and has symbol Hg.
This element with symbol Pb was used in ancient Roman pipes and is now known to be toxic.
This element with symbol Cu has been used since ancient times for coins, wiring, and the Statue of Liberty.