1. Welcome to Chemistry II – Day X
Portland Evening Scholars
Mr. Treothe Bullock – Instructor
 Unit 8 Chemical Reactions
 Exam – last questions
 Exam
 Turn Unit 8 packet in with exam
 Stoichiometry
 Chapter 9 section 1 Review
should be done
 We will go over limiting
reactants & % yield
 Stoichiometry Prelab
Equations & Calculations
 Final Project Presentations
 Please make sure you have self
scored yourself on your rubric
 Please email a copy of your
presentation to
tbullock@pps.net
 Tonight is last night – if you
have had an issue talk to Mr. B!
 Absolute Zero

2. Stoichiometry-
Big Ideas/Essential Questions
 How are moles used in chemistry?
 How is the limiting reactant determined?
 How is percent yield calculated?

3. Stoichiometry –
Learning Targets
 I (the student) can…

 Use a balanced equation to determine mole ratios.
 Use stoichiometry to find an unknown quantity of a reactant or
product with a known quantity from either a reactant or product.
 Distinguish between the limiting and excess reactant, and use this
information to calculate products.
 Calculate percent yield using the theoretical and actual yield.

4. Stoichiometry
-Content Vocabulary
 Stoichiometry,
 molar ratios,
 molar mass,
 limiting reagents,
 excess reagents,
 theoretical yield,
 actual yield, and
 percent yield.