LARN 144 C36D4
Study for the summative assessment on chapter 17 on Thermochemistry that is to be given on your next school day that our class meets. Today is day 144. Study for your test which is scheduled for school day 145! If your class does not meet on day 145, today’s home learning activities are listed under day 145 and on day 145 your home learning activities are those listed below.
Start the following in class:
1. Review and study your notes, and your journal reflections. Study your learning log, your Cornell Notes, and anything that was misunderstood on the Chapter 17 Study Guides, Chapter 17 Section Reviews, Chapter 17 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. Go to http://www.phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCodewcprefix=cdawcsuffix=1170 and take an online formative test for chapter 17, Thermochemistry. Then click on the Score My Test button and study anything that you do not yet understand.
3.a. 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 17 test on Themochemistry. Understand about and be able to do the following.
1. Be able to describe the construction of a constant pressure calorimeter and the construction of a constant volume(a.k.a. bomb) calorimeter.
2. Compare and contrast an exothermic chemical process to that of an endothermic chemical process that occurs in thermal contact with a heat absorbing material such as a sample of water enclosed in a thermally insulated container. Consider what happens to the temperature as the chemical process begins and whether the reacting chemical(s) increase(s) or decrease(s) in chemical potential energy.
3. Describe the difference between the concept of the heat capacity of a substance and the specific (or massic) heat capacity of the substance.
4. State the value of the specific heat capacity of water at 25.0°C.
5. Be able to use the relation q = m · Cp·T to solve problems involving the transfer of thermal energy from one material to another.
6. Describe what a change in enthalpy, ΔH, represents.
7. Be able to look up the enthalpy changes for various changes in state and use those values to solve problems involving the calculation of the transfer of thermal energy from or to a material undergoing a phase change.
8. State Hess’ law and be able to rearrange thermochemical equations in such a way that they add up to a known target equation for purposes of calculating the overall net change in enthalpy during the process represented by the target equation.
9. State what standard conditions of temperature and pressure are when describing thermochemical reactions and writing thermochemical equations.
10. Be able to use tables of standard enthalpies of formation to determine the standard change in enthalpy for a given process using the relationship that ΔH = ΔHf(products) – ΔHf(reactants).
11. Study the Unit Analysis Strategy document for solving problems. Learn the numerator and denominator units of the named conversion ratios to make problem solving easier for you.
12. Review Figure 17.5 on page 511, Figure 17.6 on page 512, Figure 17.7 on page 515, Figure 17.9 on page 520, Figure 17.10 on page 523, Figure 17.15 on page 530, and Figure 17.16 on page 534
Recommended for those who have time left in their 45 minute study period, but not required of all:
1. Review the Key Concepts for each text section and clarify in your mind under what circumstances would it be helpful to use each of the different relationships shown in the Key Equations section. Read and study the Study Guides given on pages 33, 57, 95, 121, 148, 180, 206, 246, 280, 314, 346, 378, 406, 438, 464, 498, and 534 of the text.
2. 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.
3. Review the SI prefixes and their meanings until you can readily explain the meaning of each listed SI prefix as a numerical multiplier.