Friday, 10 May

In class

  1. Peer review and discussion of the solution stoichiometry problem set.

Wednesday, 8 May

In class

  1. Finish and discuss the Molarity problem set.
  2. What is the molarity of a normal saline solution?
    • Practice making the molar solution.
    • Film an instructional video making your solution and upload the video to Classroom.
  3. Answer the lead ion precipitation reaction from last class.

Assignments

  1. Complete the solution stoichiometry problem set before the start of class on Friday.
The concentration of a molar solution usually needs to be known with a high degree of accuracy. To achieve this aim, a volumetric flask must be used.
The concentration of a molar solution usually needs to be known with a high degree of accuracy. To achieve this aim, a volumetric flask must be used.
The concentration of a molar solution usually needs to be known with a high degree of accuracy. To achieve this aim, a volumetric flask must be used.

Monday, 6 May

In class

  1. Limiting reactant stoichiometry quiz.
  2. How many milliliters of 2.5 M sodium chloride solution is needed to precipitate 1.75 g of lead(II) nitrate out of solution?
  3. How can the concentration of a solution be expressed quantitatively?

Assignments

  1. Watch Making a Molar Solution and take notes on the steps involved.
  2. Bring your goggles to class Wednesday and be prepared to make your own molar solution using the technique outlined above.
A vast array of chemicals are dissolved in water to form aqueous solutions. Having a method to know exactly how much of the compound is dissolved is paramount for solution stoichiometry.
A vast array of chemicals are dissolved in water to form aqueous solutions. Having a method to know exactly how much of the compound is dissolved is paramount for solution stoichiometry.
A vast array of chemicals are dissolved in water to form aqueous solutions. Having a method to know exactly how much of the compound is dissolved is paramount for solution stoichiometry.

Thursday, 2 May

In class

  1. Feedback on the Mass-to-Mass Stoichiometry Quiz.
  2. Measure the mass of calcium carbonate synthesized and finish the analysis questions.

Assignments

  1. Review for a limiting reactant stoichiometry quiz next class. You will be allowed a 3×5 inch notecard.
    • ChemTeam practice exercises with limiting reactant. Remember that you must use the dimensional analysis method.
  2. Check this site for some practice percent yield questions.

Tuesday, 30 April

In class

  1. Mass-to-mass stoichiometry quiz.
  2. Making chalk: The Synthesis of Calcium Carbonate.
Calcium carbonate, [math]CaCO_3[/math] composes 4 % of the Earth’s crust and is also used as an antacid in medicines such as Tums.
Calcium carbonate, [math]CaCO_3[/math] composes 4 % of the Earth’s crust and is also used as an antacid in medicines such as Tums.
Calcium carbonate, [math]CaCO_3[/math] composes 4 % of the Earth’s crust and is also used as an antacid in medicines such as Tums.

Friday, 26 April

In class

  1. Mass-to-mass stoichiometry practice.
  2. Limiting and Excess Reactants
    • Example exercises.
    • Problem Set

Assignments

  1. Review mass-to-mass stoichiometry for a quiz next class. You are allowed a 3×5 notecard for this quiz.

Wednesday, 24 April

In class

  1. Practice quiz: mass-to-mass stoichiometry.
  2. How can we determine if there is enough reactants to form a certain amount of product?
    • The S’mores analogy.

Assignments

  1. Begin work on the Limiting and Excess Reactants problem set for next class.
S’mores are a useful analogy to use as we start investigating limiting reactant stoichiometry.
S’mores are a useful analogy to use as we start investigating limiting reactant stoichiometry.
S’mores are a useful analogy to use as we start investigating limiting reactant stoichiometry.

Monday, 22 April

In class

  1. Happy Earth Day!
  2. Fizzy Drink Stoichiometry

The carbonation in carbonated beverages is due to molecules of dissolved [math]CO_2[/math].
The carbonation in carbonated beverages is due to molecules of dissolved [math]CO_2[/math].
The carbonation in carbonated beverages is due to molecules of dissolved [math]CO_2[/math].

Thursday, 18 April

In class

  1. The Three Balloons.
  2. Mole Ratios problem set.
    • Form working groups.
    • Assign roles.
    • Complete the problem set.

Assignments

  1. Complete sections 16.3 and 16.4 in cK-12 before the start of class on Monday.

Tuesday, 16 April

In class

  1. Feedback on the Chemical Equations Unit Quiz.
  2. Guiding Question: How many grams of water will be formed if a balloon with 0.740 g of hydrogen gas is exploded in the room?

Assignments

  1. Complete sections 16.1 and 16.2 in cK-12 before next class.

Friday, 12 April

In class

  1. Discuss the Stoichiometry Unit Learning Outcomes paper.
  2. POGIL implementation:
    • Group member roles.
    • Complete the problem set.
    • Whiteboard presentation
    • Exit slip quiz

Assignments

  1. Read, complete the practice, and submit sections 14.1 – 14.3 in cK-12 before class on Tuesday.
One mole of the brilliant yellow ionic solid potassium chromate, [math]K_2CrO_4[/math], will have a mass of 194 grams.
One mole of the brilliant yellow ionic solid potassium chromate, [math]K_2CrO_4[/math], will have a mass of 194 grams.
One mole of the brilliant yellow ionic solid potassium chromate, [math]K_2CrO_4[/math], will have a mass of 194 grams.

Monday, 8 April

In class

  1. Chemical Reactions Unit Quiz.
  2. How can we count the number of atoms in a sample using a balance?
    • The concept of the mole.
    • Molar mass.

Assignments

  1. Begin and complete the Khan Academy assignments on Moles and Molar Mass by the end of the week.

Thursday, 4 April

In class

  1. Reviewed how we can predict the products of single replacement reactions using the metal activity series as well as writing net ionic equations.
  2. How can we count the number of atoms in a sample using a balance?

Assignments

  1. Review for the chemical reactions unit quiz on Monday.