Week 20:  23 January to 27 January 2023

23 January 2023:

In Class:  Empirical and Molecular Formulas.  (Chapter 5:2 to 5:5)

Expectations:  Students will be able to calculate empirical and molecular formulas.

Due:  The Counting Atoms in Formulas Worksheet with gfm calculations.

Homework:  Finish the Empirical and Molecular Formula Worksheet.
Here is the Empirical and Molecular Formula Answer Key to help you.

24 January 2023:

In Class:  Quiz on gfm, empirical, and molecular formulas.  Percent Composition (Chapter 5:19 to 5:20).

  •  % composition by mass = 
  • mass of part
     mass of whole 
  •  × 100
  • Expectations:  Students will be able to calculate the percent composition in a chemical formula.

    Due:  The Empirical and Molecular Formula Worksheet.

    Homework:  Finish the Percent Composition Worksheet.  Here is the Percent Composition Answer Key to help you.

    25 January 2023:

    Lab 17a:
    Complete the data collection for the Precision in Volumetric Measurement Lab.

    Expectations:  Students will be able to explain why volumetric glassware (or any instrument) should be calibrated.

    Due:  The Percent Composition Worksheet.

    26 January 2023:

    No Class:  Chemistry does not meet on Thursday.

    27 January 2023:

    In Class:  Data analysis using a spreadsheet for Lab #17:  Precision in Volumetric Measurement Lab in a spreadsheet.

    Expectations:  Students will be able to recommend appropriate sample sizes for given instruments.

    Due:  The Percent Composition Worksheet.

    Homework:  Finish the Precision in Volumetric Measurement Lab in a spreadsheet.

    Note:  2nd quarter ends 26 January 2024.