Chemistry Unit 9: Stoichiometry

Unit Goals:

  • Use chemical equations to explain and demonstrate the law of conservation of matter in chemical reactions.


 

Course Essential Questions

  • How are a system’s characteristics, form, and function attributed to the quantity, type, and nature of its components?
  • How might scientific inquiry be used to investigation the natural world?

Unit Guiding Questions

  • How can the amounts of reactants needed or products generated in a reaction be predicted?
  • What factors affect the amounts of reactants needed and products generated in a chemical reaction?
  • Why is it important that we are able to quantify chemical reactions??

Understandings

  1. Chemical reactions are described by the Law of Conservation of Mass.
Learning Targets

Students will be able to....

  • Define stoichiometry
  • Distinguish between composition stoichiometry and reaction stoichiometry.
  • List 3 types of composition stoichiometry problems and give an example of each.
  • Define mole ratio
    • Explain how mole ration is determined
    • Describe its role in stoichiometry calculations
  • Give the mole ratio for any 2 substances in a chemical equation
  • Name the 4 types of reaction stoichiometry problems and calculation needed
    • Calculate the amount in moles of a reactant or product, given the amount in moles of another reactant or product
    • Calculate the amount in moles of a reactant or product, given the mass of another reactant or product
    • Calculate the mass of a reactant or product, given the amount in moles of another reactant or product
    • Calculate the mass of a reactant or product, given the mass of another reactant or product
  • Define limiting reactant
  • Determine the limiting reactant in a reaction in which the amount of both reactants is given
    • Calculate the amount of a product in mass or moles given the amount of two reactants in mass or moles, one of which is in excess
  • Define theoretical yield, actual yield, and percent yield.
    • Explain theoretical yield in terms of experimental error
  • Calculate percent yield, given actual and experimental data
  • Explain the importance of quantities in chemical reactions.

Handouts

Links and Resources

Daily Learning Activities
Day 1 March 28-29

Day 2 April 1&4

Day 3 April 5&6
Day 4 April 7&8
  • Oxidation Number Quiz
  • Collect data - Floating Penny Lab
    • Write balanced equations for metals
    • find moles of each metal.
    • Use equation to find moles of HCl used and moles of ZnSO4 produced

  • Quiz - Lewis Structures and Molecular Geometry
  • Molarity Review
Day 5 April 11&12
  • Warmup review: mass<->mole calculations; molarity calculations
  • Mole Ratios - POGIL
Day 6 April 13&18

PARENT CONFERENCES APRIL 14-15

Reaction Stoichiometry   

Day 7 April

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Copyright 1989-2016 L.C.Lee, www.chemistar.com

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