How to use particle models to determine the amount of excess reactant left over after the limiting reactant is completely used up in a reaction posted on October 19, 2019 In chemical reactions, reactants are converted into products. In other words, atoms of reactants in the starting mixture regroup in new ways to form new chemicals called products in the product …Continue Reading about How to use particle models to determine the amount of excess reactant left over after the limiting reactant is completely used up in a reaction →