LARN 141 C36D1
Start the following in class:
1.a. Write your journal entry on sheets of three holed 8.5 inch by 11 inch ruled paper in your Journal notebook. 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 day’s paragraph with a topic sentence, follow with explained instances, and close with a focused summary statement.
The first learning journal, J141A, for today is as follows. Read pages R24 and R25 on the properties, and sources of the elements nitrogen, phosphorus, arsenic, antimony, and bismuth found in Group 15 (VA). On your learning journal page record the answers to these three numbered questions:
a. What is the most interesting fact you read about? Please make your answer to this question longer than one sentence.
b. What makes this so interesting to you? Please make your answer to this question longer than one sentence.
c. What is one use for one of the aforementioned nonmetals that you either were not familiar with or were least familiar with?
1.b. For your journal entry, J141B, read pages R26 and R27 on the properties, and sources of the elements nitrogen, phosphorus, arsenic, antimony, and bismuth found in Group 15 (VA). Note that the pages R26 and R27 that are to be read and reflected upon are different than those assigned for J141A, pages R24 and R25. On your learning journal page record the answers to these three numbered questions:
a. What is the most interesting fact you read about? Please make your answer to this question longer than one sentence.
b. What makes this so interesting to you? Please make your answer to this question longer than one sentence.
c. What is one use for one of the aforementioned nonmetals that you either were not familiar with or were least familiar with? Please make your answer to this question longer than one sentence.
2. Check out the student made Quizlet for chapter 17 Do all the definitions reflect a thorough and correct understanding?
3. Do the both sides of the handout entitled Thermochemistry Review: Unscramble the italicized Words and Thermochemistry Crossword Puzzle.
Recommended for those who have time left in their 45 minute study period, but not required of all:
1. For your third learning journal, J141C, entry you are to construct a concept map. Please turn to page 534 in your text and, on your learning journal page, construct a concept map relating the nine terms listed at the bottom of the page in the green colored ovals. Connect related terms with arrows such that the subject of each sentence explaining the relationship is at the tail of the arrow, the verb describing the relationship of the subject to the predicate is written beside the arrow, and the arrow head is touching the oval of the term which is the object or predicate nominative of the verb that you have chosen. Use examples to clarify each idea that you express in your learning journal and make sure that you explain how each example demonstrates the concept being considered.
2. Do the Home Inquiry Activity entitled Observing Heat Flow that is described on page 504 of your text. Before you start you should obtain a clean rubber band that is about 4 to 10 cm long. After you have finished the activity, set up a Home Inquiry Response Sheet like the ones we have set up in the past to record your responses to the Think About It questions. 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.
a. Draw a labeled diagram of the stretched rubber band. Are the atoms closer or further away from each other if the rubber band is stretched?
b. Draw a labeled diagram of the now relaxed rubber band. Are the atoms in the chains of atoms comprising the rubber band closer or further away than when the rubber band was stretched?
c. Answer the first two Think About It questions asked on page 504 concerning the activity that you performed. 1. …. 2…
d. According to this experiment, is chemical energy given off or absorbed when atoms come closer together? Give the reasoning for your conclusion.
e. Answer the last two questions asked on page 504 and explain your reasoning.
3. 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.
4. 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?
5. 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.