by horse Comment Closed

LARN 120 C30D4

Start the following in class:

Study for the summative assessment on chapter 14 that is to be given on your next school day that our class meets.  Today is day 120.  Study for your test which is scheduled for school day 121!  If your class does not meet on day 121, today’s home learning activities are listed under day 121 and on day 121 your home learning activities are those listed below.

1.. Go to http://www.phschool.com/webcodes10/index.cfm?wcprefix=cda&wcsuffix=1140&area=view and take an online formative assessment for chapter 14, The Behavior of Gases. Then click on the Score My Test button and study anything that you do not yet understand.

NOTE: The online formative tests taken by different students are different. There are two problems with this particular set of questions:

  • The correct response for the SI unit of volume, the m3, asked for in one of the questions, is not given in any of the choices including the one that the author’s of the self-assessment are considering to be correct.
  • For a test question that concerns the number of moles of gas in 1.00 L of gas at 0.109 atm pressure and 16.0 °C, the correct number of moles is scored as incorrect when the test is scored.

2.   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.b.  Review and study your notes, and your journal reflections. Study your learning log, your Cornell Notes, and anything that was misunderstood on the Chapter 14 Study Guides, Chapter 14 Section Reviews, Chapter 14 Chemical Reactions [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.

3. Continue studying for the chapter 14 test on The Behavior of Gases

  1. Describe the assumptions of the kinetic theory of gases.
  2. Compare and contrast the particle spacing and total enthalpy of equal amounts of solid, liquid, and gas forms of the same substance.
  3. Describe the variables that can influence the pressure of a given number of moles of a gaseous substance.
  4. Describe Boyle’s law in both words and by means of a simple mathematical equation.
  5. Describe Charles’ law in both words and by means of a simple mathematical equation.
  6. Describe Amonton’s law in both words and by means of a simple mathematical equation.
  7. State the ideal gas law by means of a simple mathematical equation.
  8. Be able to derive alternate mathematical expressions of Boyle’s law, Charles’ law, Amonton’s law, and the ideal gas law by expressing the laws in terms of the variables that describe a sample of gas that is first in state 1 and then in another state, state 2.
  9. Be able to calculate the value of the universal gas constant [a.k.a. ideal gas constant], R from the [memorized] values that describe the molar volume of one mole of an ideal gas at standard temperature and pressure.
  10. Be able to solve problems involving samples of real gases using Boyle’s law, Charles’ law, Amonton’s law, or the ideal gas law.
  11. Describe how the attractive forces between molecules differ between real gases and an ideal gas.
  12. Describe how the size of molecules differs between real gases and an ideal gas.
  13. Describe the conditions of temperature and pressure that cause the properties of real gases to deviate from those of an equivalent amount of an ideal gas.
  14. Describe the reasoning behind Dalton’s law of partial pressures and be able to state that law and apply that law to problems involving mixtures of gases.
  15. Be able to calculate the partial pressure of a gas in a mixture of ideally behaving gases, given the partial pressures of the other gases and the value of the total gas pressure.
  16. Be able to calculate the partial pressure of a gas within a mixture of gases that exerts a known total pressure, given data sufficient to determine the mole fraction of that particular gas within the entire mixture.
  17. Describe which types of molecules effuse and diffuse faster.
  18. Be able to calculate the relative rate of effusion or diffusion of a less massive molecule compared to that of a more massive molecule, given the names or formulas of the molecular substances and a table of relative atomic masses.
  19. Be able to identify the law whose ideal behavior is described by each mathematical equation: P⋅V = k,  V = k⋅T,  P⋅V= n⋅R⋅T,  v⋅ √(m) = k,  Pt = p1 + p2 + p3 + …

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

1.  Check out the student made Quizlet for chapter 14 at The Behavior of Gases.  Do all the definitions reflect a thorough and correct understanding?

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