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Honors 2st Grading Period

Competency Academic Vocabulary:

Power Objectives: • ratio

• Articulate elemental and molecular properties utilizing physical • limiting reactant structures of the and the . (P.O. #1) • excess reactant • Characterize interactions between matter and energy. (P.O. #2) • theoretical • Demonstrate how mathematics describes concepts in • actual yield chemistry. (P.O. #3) • percent yield

• Design and conduct chemistry investigations. (P.O. #4)

Stoichiometry Enduring Understandings: Essential Questions: • Often in science, there is a difference between what could • Which relationships can be derived from a balanced chemical theoretically happen and what may actually happen. equation? • Chemical reactions are controlled by the unique properties of • How are mole ratios written from a balanced ? the reactants. • What is the sequence of steps used in solving stoichiometric problems? • Sometimes not all of the reactants are used up in a reaction, yet • How are these steps applied to solve stoichiometric problems? mass is always conserved. • In a , which reactant is the limiting reactant? • Stoichiometry is an analytical tool which combines the mole • How much of the excess reactant remains after the reaction is concept, mass and chemical conversions, and balanced complete? chemical equations. The pharmaceutical industry would not • How do you calculate the mass of a product when the amounts of more exist if it weren’t for the use of stoichiometry. than one reactant are given? • What is the theoretical yield of a chemical reaction? • How do you calculate the percent yield for a chemical reaction?