Thursday, 14 November

In class

  1. Unit 4 Practice Exam (APC).
  2. Q&A for any Unit 4 topics.

Assignments

  1. Continue your review for the Unit 4 exam on Monday. The following sections in the Barron’s review book are covered on the exam:
    • Chapter 5, Stoichiometry.
    • Chapter 12, Oxidation-Reduction reactions (stop on p. 376 before they begin discussing electrochemistry.)
    • Chapter 13, Acids and Bases
      • Arrhenius Theory, p. 397.
      • Neutralization Reactions, p. 403
  2. Bring your laboratory notebook to class tomorrow to prepare it for collection on Monday.

Wednesday, 13 November

In class

  1. Calculations and analysis of the data collected in the redox titration.

Assignments

  1. Continue review for the Unit 4 exam on Monday.

Tuesday, 12 November

In class

  1. Thanksgiving Thanks.
  2. Determining the oxidation state of manganese with a redox titration.

Assignments

  1. Update your laboratory notebooks with the analysis of the redox titration and make sure you have completely all of the entries for the song acid-strong base titration.
  2. Continue your review and revision for the Unit 4 exam on Monday.

Monday, 11 November

In class

  1. Exercise: balancing a redox reaction equation.
  2. Redox titration experiment.
    • Meet with assigned group and read experiment introduction and procedure.
    • Prepare laboratory notebook for the experiment tomorrow.

Assignments

  1. Dress for laboratory work tomorrow.
  2. Begin work on the Unit 4 Progress Check in APC and/or review for the Unit 4 exam next Monday. (Skip any APC questions that talk about the Bronsted-Lowry theory of acids and bases; we will cover that idea in the spring term.)
Potassium permanganate is widely used in chemistry as a strong oxidizing agent. That is, it readily accepts electrons from other chemical species.
Potassium permanganate is widely used in chemistry as a strong oxidizing agent. That is, it readily accepts electrons from other chemical species.
Potassium permanganate is widely used in chemistry as a strong oxidizing agent. That is, it readily accepts electrons from other chemical species.

Friday, 8 November

How are balancing redox reaction equations similar and different from the equations you can already balance?

In class

  1. Quiz: Strong Acid-Strong Base Titrations.
  2. Balancing redox reactions using the half-reaction method.

Assignments

  1. Practice balancing redox reactions using the half-reaction method with Chapter 7 Exercises: 39, 40, and 41.

Thursday, 7 November

In class

  1. Warm up exercise: strong acid- strong base titrations.
  2. Finish and discuss the Oxidation and Reduction problem set.

Assignments

  1. Review the theory and calculations of strong acid-strong base titrations for the quiz tomorrow.

Wednesday, 6 November

What happens when electrons are transferred in chemical reactions?

In class

  1. Strong acid-strong base titration experiment, Day 2.
    • Finish your technique practice with the titrations and then collect data on the unknown molarity HCl solution.
  2. Oxidation-Reduction reactions.
    • Animation of the Zn/Cu redox reaction.
    • Assigning oxidation states.
    • Oxidation and Reduction problem set.

Assignments

  1. Quiz on Friday covering acid-base titrations technique and theory.
  2. Continue work on the Oxidation and Reduction problem set. Get as far as you can before class tomorrow.
Oxidation-reduction (redox) reactions involve the transfer of a valence electron(s) from one reactant to another.
Oxidation-reduction (redox) reactions involve the transfer of a valence electron(s) from one reactant to another.
Oxidation-reduction (redox) reactions involve the transfer of a valence electron(s) from one reactant to another.

Monday, 4 November

How does a titration allow one to determine the concentration of an unknown solution?

In class

  1. Strong acid-strong base titration experiment.

Assignments

  1. Review the pages in section 7.2 dealing with oxidation numbers then attempt Chapter 7 Exercises 16 & 17.
Too pink! Try again.
Too pink! Try again.
Too pink! Try again.

Friday, 1 November

What are acids and bases? How do acids and bases behave in water?

In class

  1. Warm up exercise: Write the net ionic equation for the chemical reaction between solutions of sodium chloride and silver nitrate.
  2. Johnstone Triangle: The chemical reaction between hydrochloric acid and sodium hydroxide.
  3. Review and feedback of the Unit 3 exam

Assignments

  1. Work on Chapter 7, exercise 25(a) in your textbook before next class.
  2. Watch the following video on performing an acid-base titration.
  3. Dress for laboratory work on Monday.
Credit: The Beauty of Chemistry, by Philip Ball, Wenting Zhu, and Yan Liang
Credit: The Beauty of Chemistry, by Philip Ball, Wenting Zhu, and Yan Liang
Credit: The Beauty of Chemistry, by Philip Ball, Wenting Zhu, and Yan Liang

Thursday, 31 October

Do all reactant species participate in a chemical reaction?

In class

  1. Visualizing precipitation reactions at multiple levels.

Assignments

  1. Complete Chapter 7 Exercises 6 and 10 in your notebook.
  2. Work on the Net Ionic Equations problem set. Aim to finish it by Monday. (The Extension Questions in Model 3 are a preview of our forthcoming discussion of acid/base reactions.)
Precipitation reactions often can be incredibly colorful.
Precipitation reactions often can be incredibly colorful.
Precipitation reactions often can be incredibly colorful.

Wednesday, 30 October

In class

  1. Check in 7.1 assignment.
  2. Finish the Eight Chemical Reactions experiment.

Assignments

  1. Complete exercise 11 in Chapter 7.
  2. Read section 7.2.

Tuesday, 29 October

What are the similarities and differences in the observations of various chemical reactions?

In class

  1. Feedback on your laboratory notebooks.
  2. Observing chemical reactions.

Assignments

  1. Read section 7.1 in your textbook.
  2. Complete exercises 1, 2, 3, and 5. I will check in this work on Wednesday morning.
Keeping a laboratory notebook is an important skill to develop for any work in the sciences.
Keeping a laboratory notebook is an important skill to develop for any work in the sciences.
Keeping a laboratory notebook is an important skill to develop for any work in the sciences.

Monday, 28 October

In class

  1. Turn in laboratory notebook.
  2. Unit 3 exam.

Assignments

  1. Dress for laboratory work tomorrow and Wednesday.
  2. Review this entry on Technique: Keeping a Laboratory Notebook.

Friday, 25 October

What is the difference between a chemical change and a physical change?

In class

  1. Is sodium chloride dissolved in water a chemical or physical change?
  2. Q&A session for any remaining Unit 3 topic questions.

Assignments

  1. Review for the Unit 3 exam on Monday.
  2. Have your laboratory notebook ready to turn in on Monday as well.
Particle diagrams are incredibly useful in helping to visualize chemical behavior.
Particle diagrams are incredibly useful in helping to visualize chemical behavior.
Particle diagrams are incredibly useful in helping to visualize chemical behavior.