by horse Comment Closed

LARN 126 C32D2

Start the following in class:

Study for the summative assessment on chapter 15 that is to be given on your next school day that our class meets.  Today is day 126.  Study for your test which is scheduled for school day 127!  If your class does not meet on day 127, today’s home learning activities are listed under day 127 and on day 127 your home learning activities are those listed below.

1.  Go to http://www.phschool.com/webcodes10/index.cfm?wcprefix=cda&wcsuffix=1150&area=view and take an online formative assessment for chapter 15, Water and Aqueous Systems. Then click on the Score My Test button and study anything that you do not yet understand.

2.a.  Review and study your notes, and your journal reflections. Study your learning log, your Cornell Notes, and anything that was misunderstood on the Chapter 15 Study Guides, Chapter 15 Section Reviews, Chapter 15 Water and Aqueous Solutions [Formative] Test A, and other work sheets which you now have checked using green ink. Look up anything that you still don’t understand in your text, glossary, vocabulary study sheets, class notes, or come to help class if you need help.

2.b.  Examine this chapter’s learning objectives, one by one. 

  • Are you able to demonstrate your understanding or mastery of each of this chapter’s learning objectives?  
  • How do you know you can? 
  • What has formative assessment of each objective informed you about?

2.c. Continue studying for the chapter 15 test on Water and Aqueous Systems.  Understand about and be able to do the following.

  1. Describe the relative strengths of various kinds of interparticle forces or bonding between atoms and molecules.
  2. Describe what kinds of properties suggest that a substance has hydrogen bonding between its formula units.
  3. Describe two structural requirements of bonded formula units are present in substances that have hydrogen bonding.
  4. Be able to interpret which substances are held together with stronger or weaker types of bonding, given data on melting points, boiling points, vapor pressure, evaporation rates, surface tension, heats (enthalpies) of fusion, or heats (enthalpies) of vaporization, etc….
  5. Describe why certain substances are electrolytes while others are weak electrolytes, and still others are strong electrolytes.
  6. Be able to describe the dissolving process at the atomic levels by using the concepts of random molecular motions, dissociation of solute crystals, and solvation of solute molecules or ions.
  7. Describe what is meant by the enthalpy of fusion conversion ratio for a solid substance and what is meant by the enthalpy of vaporization conversion ratio for a liquid substance.
  8. Be able to solve problems using enthalpy of fusion conversion ratios [e.g., the enthalpy of fusion for ice is +6.008 kJ per one mol of ice] and enthalpy of vaporization conversion ratios [e.g. the enthalpy of vaporization for water is +40.66 kJ per one mol of water].
  9. Describe how the properties of suspensions, colloids, and solutions differ.
  10. Describe the differences between foams and solid foams, aerosols, solid aerosols (smokes), emulsions, gels, sols, and solid sols.
  11. Describe the conditions for which polar bonds within molecules might or might not make the entire molecule a dipole.
  12. In situations for which the structural  formula or the condensed structural formula is given, be able to apply the  solubility rules that likes dissolve like and that unlikes tend not  to dissolve in each other.

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

1. How do the properties of covalent molecular substances with hydrogen bonding typically differ from those covalent molecular substances that form molecules whose van der Waals attractive forces only weakly attract other molecules?

2. Think about the sixteen properties of covalent molecular substances listed on the Properties to be understood worksheet describing differences in the properties of metals, ionic compounds, covalent network solids, and covalent molecular compounds.  Continue to study this handout for understanding and review how the typical properties of members of these classes of compounds depend on whether the compound has localized or delocalized electrons, and upon whether strong metallic, ionic, or covalent bonding or weak van der Waals forces of attraction are predominant between representative particles of the substances.  Try to understand how each property of a given covalent molecular substance is related to the groups of covalently bonded atoms that form molecules whose van der Waals attractive forces only weakly attract other molecules.

3. Continue to review the meanings of the words on the chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 7, chapter 8, chapter 9, chapter 10, chapter 11, chapter 12, chapter 13, chapter 14, and chapter 15 vocabulary lists.  Place a – symbol in front of each word that you have to study more,and a change the – to a + symbol in front when you have demonstrated mastery over the word to a study buddy, parent, or friend.

4. Study the Key Concepts given on pages 33, 57, 95, 121, 148, 180, 206, 246, 280, 314, 346, 378, 406, 438, and 464 of the text.

5. 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.  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.  Go over each of these concepts with your study partner.

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