Matching Pairs The Mole Matching GameOnline version Match the concepts related to 'The Mole' story and its characters in this fun game! by Globoi Ej 1 Percent composition 2 Products 3 Mole ration 4 Avogadro’s number 5 Excess reagent 6 Reactants 7 Limiting reagent 8 Stoichiometry reactant that’s not used up in a reaction ratio between the amount of moles of compounds in a chemical reaction 6.02x10^23 the determination of proportions which elements react with one another reactant that get used up in a chemical reaction a substance that undergoes change during a reaction percentage of each element that makes up a specific compound what is formed from a chemical reaction