SC3 Obtain, evaluate, and communicate information about how the Law of Conservation of Matter is used to determine chemical composition in compounds and chemical reactions.

SC3.c Use mathematics and computational thinking to apply concepts of the mole and Avogadro's number to conceptualize and calculate

SC3.c.1 percent composition

SC3.c.2 empirical/molecular formulas

SC3.c.3 mass, moles, and molecules relationships

SC3.c.4 molar volumes of gases

• I can use the mole to describe the amount of a substance - element or compound. (Knowledge)

• I can relate Avogadro’s number to the mole. (Knowledge)

• I can distinguish between how many particles are in a mole (of a given substance) and how much a mole weighs. (Knowledge)

• I can determine how many atoms, how much mass, and how many moles are in a given sample of an element, using the periodic table. (Reasoning)

• I can determine how many molecules/formula units, how much mass, and how many moles are in a given sample of a compound, using the periodic table and the molar mass. (Reasoning)

• I can describe the difference between empirical formula and molecular formula and explain what each represents. (Reasoning)

• I can convert between the number of particles, mass, and moles for elements and compounds. (Skill)

• I can calculate the percent composition of elements in a compound. (Skill)

• I can determine the empirical formula of a compound using masses of elements in a compound or using percent composition.(Skill)

• I can determine the molar mass of a compound using empirical or molecular formula and molar mass. (Skill)

SC3.d Use mathematics and computational thinking to identify and solve different types of reaction stoichiometry problems (i.e., mass to moles, mass to mass, moles to moles, and percent yield) using significant figures.

• I can explain why mole ratios are central to solving stoichiometry problems. (Knowledge)

• I can relate the coefficients of a balanced equation to a ratio of particles or moles of any two substances within a chemical

• reaction. (Reasoning)

• I can calculate the amount of product produced given the amount of reactant used in a chemical reaction (mass or moles). (Skill)

• I can calculate the amount of reactant used given the amount of product produced in a chemical reaction (mass or moles). (Skill)

• I can calculate the percent yield of a chemical reaction given the actual yield and the theoretical yield. (Skill)

• I can calculate the theoretical yield using stoichiometry (given the amount of one reactant) and then calculate the percent yield, given the actual yield. (Skill)

• I can report my answers to stoichiometry problems to the appropriate number of significant figures. (Skill)

SC3.e Plan and carry out an investigation to demonstrate the conceptual principle of limiting reactants.

• I can recall the concept of limiting reactants.

• I can identify a limiting reactant given real-world examples of chemical reactions. (Knowledge)

• I can identify the limiting reactant and excess reactant. (Knowledge)

• I can explain the relationship between the limiting reactant and the products produced. (Reasoning)

• I can determine the percent yield from the actual and theoretical yield of a chemical reaction. (Reasoning)

• I can demonstrate the mathematical principle of limiting reactants.

• I can calculate the amount of remaining excess reactant after the reaction is complete. (Skill)

• I can plan and carry out an investigation to demonstrate the conceptual and mathematical principle of limiting reactants. (Skill)