Counting Atoms & Recognizing Balanced Equations

Learn to count atoms and balance chemical equations!

Counting Atoms in a chemical formula A chemical formula is a description of the number and kind of atoms found in a single molecule of a substance, using the symbol for each element and a subscript number to state the number of atoms of the element to the left of the symbol. When a chemical formula has a coefficient you multiply the coeffiecient by all the atoms of each element on the molecule. 2 4 1 2 1 1 3 1 8 2 3 2 2 4 2 3 6 3 12 4 4 24 8 B U B B U U