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LARN 099 C25D3

Start the following in class:

1. In your Journal Notebook write your journal entry on sheets of three holed 8.5 inch by 11 inch ruled paper.

  • In the upper right corner white space of each upward facing page, use a blue or black pen to write your hand in number within a circle followed by your name. 
  • To the left of the marginal line, print J99 and circle it.
  • Each journal entry should either be at least a paragraph of exemplary writing and penmanship concerning a single topic, or be a concept map relating chemistry terms. Begin each day’s paragraph with a topic sentence, follow with explained instances, and close with a focused summary statement.
  • The required journal focus topics, J99, for today are:

Solid aluminum metal burns in pure dioxygen gas to form ionically bonded aluminum oxide.

  1. Write the chemical expression for the chemical reaction showing the correctly written formula and phase for each reactant and product and leave a space for each coefficient in front of each formula.
  2. Balance the chemical expression and show a T check so that you know that the expression is balanced correctly if the product and reactant formulas are written correctly.
  3. Use the chemical equation mole ratios and dimensional analysis to predict the chemical amount of oxygen in moles required to react completely with 24.0 moles of aluminum.  Show all of your work including the units of the unknown, the units of the given quantity, all other units, all cancellation of units, and circle the units and significant figures of your answer.  Refer to a handout on how to use dimensional analysis (discussed in your chapter 3 Learning Log pages) and Sample Problem 12.2 on page 360 of the text if you need additional help.

2.a.  Use the PQ5R or SQ5R method to prepare study guide for text section 12.2 on The Arithmetic of Equations or go to https://socratic.org/chemistry  to research the topics brought up in section 12.2 of your text.   Read section 12.2 in your chemistry text, pages 359 through 367 , and as you do, create a study guide using the SQ5R or PQ5R method explained in class and on the distributed handout packet.  You may record vocabulary entries in the body of your study guide, or you may check them off on the chapter 12 vocabulary list as you think about the meanings of the terms and add any notations to the vocabulary list for clarifications sake.

2.b.  Writing in blue or black ink, place your hand in number in a circle followed by your name in the upper right white space of a separate piece of three holed composition paper in your Learning Log that hasn’t been written on.  Place the page reference for the problems to be considered to the left of the red marginal line on the first blue line.  Centered on the first blue line, write C12.2 Equation Mole Ratio Problems.   Write the designation of each problem that you do to the left of the red marginal line.  To the right of that line, in ink, show the setup and answer for each problem that you do.  Of the problems listed below, do at least one problem a day for the next five (5) days starting today on p.360, problem I12-11ab.   Each day do at least the next problem highlighted in red.  

  • If you need a refresher or assistance in writing conversion ratios and showing your work, please read through pages R66 and R67 and study how the conversion factors were selected, and set up so that the units in the problem divided out to yield the units of the sought for quantity. Note how the work shown completely explains how the six problems given on page R66 are solved.
  • Review the handout on learning dimensional analysis .  Also review how to calculate with significant figures by studying the CHEMath sidebar on page 361 or by reviewing your notes on significant figures from your study of chapter 3.
  • For each of the problems that follow, show your work in the way gone over in class and in the chapter flipchart as follows:
    • 1.  Record the balanced chemical expression with formulas , phases, and correct coefficients
    • 2.  Record a ? followed by the unit of the sought for quantity, and the number and unit of the given quantity written under the formulas of the sought for and given substances in the chemical equation
    • 3.  Record the setup for the solution to the problem.  Recall that a setup is     
      •  ?  units of that which is sought =  the given quantity x appropriate conversion ratios = answer
      • Show the crossing out of any like units in numerators and denominators of different ratios.
      • Calculate the numerical portion of the answer and record it followed by the unit of the sought for quantity.  Circle or box in your result rounded to the proper number of significant figures.
  •  Study Sample Problem 12.2 on page 360 and then show your work as described for practice problems I12-11ab (In chapter 12, problem I12-11ab) and I12-12ab.
  • Study Sample Problem 12.3 on page 361 and then show your work including all conversion ratios for practice problems I12-13 (In chapter 12, problem 13) and I12-14.
  • Study Sample Problem 12.4 on page 364 and then show your work as described for practice problems I12-15 (In chapter 12, problem 15) and I12-16.
  • Study Sample Problem 12.5 on page 365 and then show your work as described for practice problems I12-17 (In chapter 12, problem 17) and I12-18.
  • Study Sample Problem 12.6 on page 366 and then show your work as described for practice problems I12-19 (In chapter 12, problem 19) and I12-20.
  • In the Section Assessment 12.2 on page 366, read, analyze, and do problems I12-21, I12-22, and show your work as described for practice problems  I12-23, and I12-24.
  • After you are finished, check page R92 of the text and check each of those problems that you can by writing in either a check mark (√) or a correction in green ink as we do in class.  Some questions do not have a suggested response given.  For each such question, circle the number of the question in the margin of your notebook paper and check your response with that of your classmates when you come to class.

Recommended for those who have time left in their 45 minute study period, but not required of all:

1.  Download and open the Unit Learning Objectives for Cornell Notes document, press and hold the CTRL key while typing F to bring up a search (find) box.  Type in Chapter 12 in the search box and then move your cursor into the text area to the right and click there to see the first page of objectives.   Consider each learning objective as you proceed through the chapter with the aim of being able to demonstrate your understanding and ability to apply the learnings.  For now, study and take Cornell notes on objectives 3, 4, 5 and 9.  

2.   Download current ActivInspire unit flipchart by logging on to the MNSD Google Drive and selecting it from the Student Resources > ActivInspire  folder.  Generally the flipchart name will begin with a capital U to designate the chemistry unit of study and end in a relatively high version number following the v at the end of the flipchart’s title.  Download the flipchart on stoichiometry after clicking on the following link: Stoichiometry .  Click through the chart quickly and take Cornell notes on concepts pertaining to the learning objectives that you are studying.  At the end of your study, write a summary statement of what you learned.

[If you have not yet successfully installed ActivInspire software, use  https://drive.google.com/open?id=0B9ft9hAr_RjiR0pqTUpHb3QyMm8  to download and install the latest version of ActivInspire free personal edition software on your home PC, Mac, or Linux computer.]

3.  Review the Key Concepts given on pages 33, 57,95, 121, 148, 180, 206, 246, 280, 314, and 346 of the text.  Review those concepts that we have discussed in class that are in your study guides, that are in your text study guide at the end of the chapter, and that on the chapter vocabulary sheet provided to you that describes what is a substance, an element, a compound, a coarse mixture, a colloidal suspension, a solution; an atom; a formula unit, a molecule; a phase, an aqueous phase; a chemical change, a physical change; a chemical reaction, a reactant, a product, a word equation, and a formula unit equation; and how are these concepts different?   You need to be able to explain the meaning of each of these terms, and be able to differentiate the terms, be able to compare and contrast these related terms, and give examples that make clear the points that you are trying to explain.