Category: Chemistry

Students finished taking the Mole Chapter Test using their book and notes.  They were told to be sure to pick and go over the 2nd Sem. Exam Study Guide as well as bring their books, calculators and pencils on the day of their exams.

We began class working 3 problems working with molecular formulas.  We determined how to use empirical formulas to produce molecular formulas.  Then, students received "The Mole" chapter test and were able to use their books.  All classes have received their 2nd Sem. Exam Rev. Guides.

Students began the Empirical Formulas WS and were assigned it for homework after not finishing it in class.  They were also told to read and be able to explain the term, "molecular formula" and how to determine a molecular formula.

Students learned how to determine empirical formulas from % composition or masses given.  Three problems were worked on the board w/one for homework after reviewing p. 331.

Wednesday; May 10, 2017

Students continued to finish the Mass of Compounds to particles WS and completed the other conversion of mole-particle-mass .

Thursday; May 11, 2017

Students took notes from the PowerPoint on How to determine Percent Composition by Mass of a compound.  We worked three problems on the board and then they began the % Composition WS.  3rd Period did not begin the WS due to the Awards Ceremony.

Friday; May 12, 2017

Students continued and finished the % Composition by Mass WS and began to finish the PPT on Determining % composition when given a mass instead of a percent to determine empirical and molecular formulas.

Students continued to work on conversions involving Mole/Mole Ratio's and Mass to Moles of elements and compounds.

Students completed the Mole-Mass of Compounds WS and then we began the notes on Moles of elements in compounds and conversions there.  We also began to compare to convert from moles of a compound to particles of a compound.

Today students worked on a worksheet that changed the mass of an element to the number of atoms/particles in an element (30 points). Afterwards they worked on a worksheet changing molecules/formula units to a mass (30 points). They will finish the second worksheet on Monday in class.

Students worked on problems converting masses of compounds to moles of compounds to particles/atoms of a compound in a worksheet (and vice versa).  The worksheet (50 pts) was taken up at the end of class.  We will finish the worksheet in class tomorrow.

Students learned how to convert from mass of a compound to number of particles and vice versa.  Then they were given a Mass to Moles WS (30 pts) to complete for homework.  We worked 3 practice problems on the board prior to the WS.