number placed in front of the compound that tells how many are on the left of a chemical equation In...

number placed in front of the compound that tells how many
are on the left of a chemical equation
In chemical equations, the reactants must be equal to the products.
are on the right of a chemical equation
one or two letters representing an element
A small number to the right of a symbol to show how many atoms of an element.
how much product you get after a reaction