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| What is stoichiometry? | the study of the quantitative relationships between amounts of reactants used and products formed by a chemical reactant. |
| What is the law of conservation of mass? | states that mass is neither created nor destroyed in a chemical reaction. The mass of the reactants equals the mass of the products. |
| What is the mole ratio? | It is a ratio between the number of moles of any two substances in a balanced equation. |
| How many mole ratios could you write for a reaction involving a total of four reactants and products? | Multiply the number of factors in the equation by the next lower number. |
| What can you do with the chemical equation and mole ratio? | You can calculate the amount of any other reactant in the equation and the maximum amount of the product you can obtain. |
| What kind of conversion problem do you have when the quantity of the given substance is in moles and the unknown substance to be determined is in moles? | mole-to-mole conversion |
| What is the numerator and denominator is a correct mole ratio? | The moles of the unknown should be in the numerator and the number of the knowns should be in the denominator. |
| What kind of conversion problem do you have when you know the number of moles of a reactant or product in a reaction and you want to calculate the mass of another product or reactant? | A mole to mass conversion |
| How do you know the number of significant figures in your answer? | You look at the number of significant figures in the given moles |
| What kind of conversion problem asks you to use a measured mass of a known substance to find the mass of an unknown substance? | mass-to-mass conversion |
| What are limiting reactants? | reactant that limits the extent of the reaction and thereby determines the amount of the product |
| What are excess reactants? | A portion of reactants that remain after the reaction stops. |
| How can you determine which reactant is a limiting reactant? | Identifying the limiting reactant involves finding the number of moles of each reactant and determining if the two reactants are in the correct mole ratio as given in the balanced equation. |
| What is the theoretical yield? | the maximum amount of product that can be produced from a given amount of reactant |
| What is the actual yield? | amount of product actually produced when the chemical reaction is carried out in an experiment |
| What is the percent yield? | product of the ratio of the actual yield to the theoretical yield expressed as a percent. |
