Category Archives: Chem 11

You will find complete solutions here:

Stoichiometry Review Package Answer Key

BE SURE TO ATTEMPT THE QUESTIONS YOURSELF BEFORE LOOKING AT THE SOLUTIONS

To study for the test go through the stoichiometry relay questions.
You can check your answers here:
Stoichiometry Relay Answers

Last topic of chapter 4: % purity and % yield

Percentage Purity and Yield Complete Notes

Review Package Solutions to be uploaded halfway through spring break

TEST: March 28

• For a visual practice on balancing equations and limiting/excess reagents go to:
  • https://phet.colorado.edu/en/simulation/balancing-chemical-equations
  • https://phet.colorado.edu/en/simulation/reactants-products-and-leftovers
• The test covers section 4.1, 4.2, Enthalpy notation in 4.4 (recognizing whether a reaction is exothermic or endothermic from the energy term associated with the reaction or from the classification of the reaction, as well as defining the two terms), 4.5, and 4.6
• Make use of the material in your workbook. Attempt all the practice problems for the sections. The section review questions are a valuable resource.

Stoich IRL WITH ADDITIONAL NOTES

• relevant notes with additional analogy and step by step of how to do related calculations are included in the slideshow above

Stoich IRL Complete Notes

• notes including full step by step calculations

*Be sure to try the calculations yourself before going through the answers*

In class:

• quiz
• brain break – don’t google how to solve
• volume to volume notes for gases

For last block (Block D) – Practice problem answers for page 213 are due next class (2 must be complete)

In class

• cookie analogy
• baking demo with “guest speaker”
• notes on mole to mole and gram to gram conversions

Homework:

• Pages 208 and 210 Practice problems (all)

Quiz

• next class, Thursday March 2

2 questions from the homework will be found on the quiz – allowed to look at practice problem answers if homework has been completed

In class

• reviewed stoichiometry analogies of bread and cheese + powerpuff girls
• worksheet – s’more stoich
  • s’more analogy
  • last page chemical stoichiometry

No homework

Today

• returned quiz
  • students have the opportunity to return the quiz for a regrade
• calcium lab turned demo
  • students filled in their observation tables
• intro to stoich
  • bread and cheese, powerpuff girls

Due next class:

• quiz corrections
• post-lab questions
  • one completed sheet per each pair/trio

Class overview

• Quiz
• Lab

Quiz will be handed back next class

Lab was not completed by all students

• next class will go through observations/experiment/questions together to wrap up the activity

Post-lab questions will be due February 23