LARN 058 C15D2
ATTENTION: If you have not already done so, locate three (3) shiny United States pennies that were minted after 1982, the shinier the better, to experiment with. Bring these pennies in to transform two of them into souvenir alloys celebrating your taking chemistry this year! The pennies will be treated to form souvenirs of chemistry class. If the pennies you bring in are dull, you will have the clean them. Store them temporarily in your grommeted, three hole zipper pen case until it is time to do the laboratory activity.
Start the following in class:
1. In your Journal Notebook 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, use a blue or black pen to write your hand in number within a circle followed by your name. To the left of the marginal line, print J58A and circle it. 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 required journal focus topic for today J58A is
a. Describe similarities between ionic and metallic bonding.
b. Give one or more examples of how ionically bonded compounds and metallically bonded substances are alike. Explain how each example demonstrates the concept being considered.
c. Describe differences between ionic and metallic bonding.
d. Give one or more examples of how ionically bonded compounds and metallically bonded substances are different. Explain how each example demonstrates the concept being considered.
2. The second required journal entry topic J58B, is
The octet rule says that an atom of a metal or of a nonmetal atom often tends to react in such a way as to produce a completely filled outermost shell of electrons in the resulting ion or covalently bonded atom.
a. Restate the octet rule
1. for metal atoms in terms of the number of valence electrons in the noble gas at the end of the period preceding the location of the metallic element on the periodic table and
2. for nonmetal atoms in terms of the number of electrons in the noble gas following the nonmetallic element on the periodic table.
b. Explain what happens when a neutral sodium atom reacts with a neutral chlorine atom in terms of the idea that metal atoms and nonmetal atoms often tend to react in such a way as to produce a completely filled outermost shell of electrons in the resulting ions.
3. Do all the pages in the chapter 7 Formative Test on Scientific Measurement as a formative assessment to find out some of the things that you do and do not know, and not as a research project.
- If you did not obtain a section review packet for the chapter in class, go to MNSD Google Drive > Student Resources > Formative Tests and print off a copy of the test for the chapter you are studying. Each chapter test is identified by a name whose last two digits is the chapter number. When you open the chapter formative test the first page will have the words “Chapter Test A” in the title.
- For each question or problem challenge, either answer the question to the best of your ability using one or more full sentences, or answer the problem to the best of your ability by recording any numbers and units together with the mathematical operations performed in symbolic terms, along with the solution to the problem which should be circled.
- This is an important assignment. Each formative test is a real chapter test that some teachers in other schools might use as a chapter test, so after taking the test, make sure that you understand each unfamiliar word, idea, concept, and problem. Be sure to finish this packet in its entirety.
- After doing the formative test, but before you demonstrate your understanding on our class’ chapter test, you will check all your responses using green ink check marks √ for each correct response, and by lining out (striking trough) and inserting improved text in green ink when you think the suggested response expresses your present understanding in a better way. In that way make sure that you understand each idea that you originally did not have a complete understanding of. Then you will be able to study more efficiently by studying that which you corrected in green ink.
4. Locate the “Writing the Formulas of Ionic Compounds Correctly” worksheet, on page 7 of the Ionic and Metallic Bonding packet and write the correctly written formulas for the remaining four rows of cation compounds according to the instructions given for HLARN 055.
Recommended for those who have time left in their 45 minute study period, but not required of all:
1. Fill in just the Metallic Substance column on the worksheet entitled “Property to be understood” using blue or black ink.
Think about the sixteen properties of metals listed. Relate each property of a metallically bonded substance to its composition as a sea of strongly repelling positive ions weakly attracting, and surrounded by, a sea of fluid, mobile, delocalized electrons. In your Learning Log record any question(s) you would want to ask your teacher in class about the above mentioned properties.