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LARN 081 C21D1

Start the following in class:

1.a.  Use the PQ5R or SQ5R method to prepare study guide for Percent Composition and Chemical Formulas or go to https://socratic.org/chemistry  to research the topics brought up in section 10.3 of your text.   Read section 10.3 in your chemistry text, pages 305 through 314, 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 10 vocabulary list as you think about the meanings of the terms and add any notations to the vocabulary list for clarifications sake.

1.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 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 a descriptive title for the learning activity such as Section [chapter #.section#] Responses. Before you write your response to each question or problem listed below, write its designation to the left of the red marginal line as listed below, followed by your response in ink to the right of the marginal line.

  • Study Conceptual Problem 10.9 on page 306 and then show your work including all conversion ratios for practice problems I10-32 (In chapter 10, problem 32) and I10-33.
  • Study Conceptual Problem 10.10 on page 307 and then show your work including all conversion ratios for practice problems I10-34ab (In chapter 10, problem 34ab) and I10-35ab.
  • Study Conceptual Problem 10.11 on page 310 and then show your work including all conversion ratios for practice problems I10-36ab (In chapter 10, problem 36ab) and I10-37.
  • Study Conceptual Problem 10.8 on page 312 and then show your work including all conversion ratios for practice problems I10-38 (In chapter 10, problem 38) and I10-39ab.
  • In the Section Assessment 10.3 on page 312, read, analyze, and show your work including all conversion ratios for practice problems I10-40, I10-41, I10-42, I10-43, I10-44, I10-45ab, and I10-46zabcd (z designates your response to the preliminary question about what is an empirical formula).
  • After you are finished, check page R90 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.

2.   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, write your hand in number within a circle followed by your name.  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 days paragraph with a topic sentence, follow with explained instances, and close with a focused summary statement.

The required focus topics, J81, for today is

     A mole is a measure of the amount of substance that contains the same number of items as there are carbon atoms in exactly 12 x 10-3 kilograms of carbon-12.

a. How many carbon atoms, C, are found in 6.500 mol of benzene, C2H6?  Use dimensional analysis and show your labeled work using the ? units-of-sought-for-quantity method as explained in the chapter 10 informational packet.

b. How many moles of water, H2O, are found in 236.6 mL of water (an 8.000 oz cup of water)?  Use dimensional analysis and show your labeled work using the ? units-of-sought-for-quantity method as explained in the chapter 10 informational packet.

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

1.  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 10 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 chapter 10 learning objective as you proceed through the chapter with the aim of being able to demonstrate your understanding and ability to apply the learnings.  Study and take Cornell notes on objectives 3 through 14.  

2.  Download the flipchart on chemical quantities after clicking on the following link: Chemical Quantities .  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.

3. Review the SI prefixes and their meanings until you can readily explain the meaning of each listed SI prefix as a numerical multiplier.