Chemistry, often known as the central science, is the study of the composition of matter (what everything made out of!). Check out these chemistry facts about atoms, molecules, compounds and more. We can't wait to see how you react.
Hydrogen (H) is the most common element in the universe. It's also the first element on the periodic table, with an atomic number of 1.
Atoms of helium (He) gas have about 7 times less mass than the molecules of nitrogen (N2) and oxygen (O2) that make up most of the air around us. That's why helium is perfect for filling up balloons!
The word chemistry comes from the word alchemy, a practice that is often associated with the quest to turn ordinary objects into gold and achieve immortality.
When combined with water, the metal Sodium (Na), reacts so rapidly and with so much energy, that it often causes flames and an explosion.
You might know there're three basic states of matter: solid, liquid, and gas. Maybe you've even heard of plasma. But have you heard of Bose-Einstein condensate, fermionic condensate, time crystals, or any of the other almost twenty other rare states of matter?
The only letter that doesn't appear on the periodic table is the letter 'J.'
Due to something called the Mpemba effect, warm water often actually freezes faster than cold water.
The only two non-silver elemental metals are gold (Au) and copper (Cu).
Oxygen (O2) isn't always clear. As both a liquid ( below −182.96 °C) and a solid (below −218.79 °C), it's a pale blue.