Reflection: High Quality Task S'more Stoichiometry - Section 4: Evaluate

 

One of the biggest issues I have with students is making sure that they understand what they are doing when they perform calculations. 

With this lab when students calculate their theoretical yield and percent yield I feel that not every student knows how they got their answers.  As students were doing the lab I realized that I should make sure that students show their work in terms of how they perform these calculations.  Because of this I have revised the lab for next time, so that I tell students explicitly to SHOW YOUR WORK when doing these two calculations.  This revised s'mores lab is the revised version.

  High Quality Task: Lab Changes- Improvement of Instructions
Loading resource...
 

S'more Stoichiometry

Unit 4: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Lesson 2 of 7

Objective: Students will be able to use their knowledge of Stoichiometry to balance the reaction for S'mores and calculate percent yield for their S'mores.

Big Idea: In chemical reactions a limiting recant causes a reaction to stop while an excess reactant is leftover. Additionally one can calculate percent yield using the experimental value from performing a lab and the theoretical value.

  Print Lesson
14 teachers like this lesson
Standards:
Subject(s):
Science, Chemistry, stoichiometry, balancing chemical equations, Chemical Reactions and Balancing, limiting reactant, excess reactant, percent yield
  50 minutes
smore
 
1
2
3
4
Similar Lessons
 
Balancing Chemical Equations
High School Chemistry » Stoichiometry
Big Idea: Atoms are not destroyed or created in chemical reactions; they are rearranged. This means that a reaction must have the same amount of atoms of each element on both sides of a chemical equation.
  Favorites(3)
  Resources(16)
Westhampton, MA
Environment: Suburban
Keith  Wright
 
Chemical Reaction Equations--An Introduction
High School Chemistry » Chemical Reactions and Stoichiometry
Big Idea: Starting materials in scientific processes are called "reactants" and "products" are the result; reactants that run out limit the amount of product made, leftovers are called excess.
  Favorites(15)
  Resources(15)
Los Angeles, CA
Environment: Urban
Emilie Hill
 
Is it chemical or physical?
High School Chemistry » Unit 5 Chemical Reactions
Big Idea: Demonstrations provide context for a lesson on physical or chemical change that helps students build their ability to make evidence-based arguments.
  Favorites(5)
  Resources(15)
Palos Heights, IL
Environment: Suburban
Eric Girard
 
Something went wrong. See details for more info
Nothing to upload
details
close