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 Reactants 2 Mole ration 3 Limiting reagent 4 Avogadro’s number 5 Stoichiometry 6 Excess reagent 7 Percent composition 8 Products the determination of proportions which elements react with one another reactant that get used up in a chemical reaction ratio between the amount of moles of compounds in a chemical reaction percentage of each element that makes up a specific compound a substance that undergoes change during a reaction 6.02x10^23 reactant that’s not used up in a reaction what is formed from a chemical reaction