Spectrum Chemistry 10d Homework
On Monday, the 18th, you will have a lab practical where you will be given a chemical formula, and from it:
- draw a Lewis Structure,
- build a geometrically correct styrofoam ball model, including unshared electrons and
- be able to name the geometry, t
- o present to class.
Introduction to Naming Chemical Compounds
We have thus far learned about chemical formulas, the types of bonds that hold compounds together, their structure and geometry but not their names.
Don’t forget what you’ve learned to date, but let’s work on the ability to name the compounds this week.
Tuesday
____ Read pp. 86-90 of your textbook. This is about binary compounds – formulas with just two elements that are NOT both non-metals. These are ionic compounds.
Wednesday
I created a dichotomous key to use in learning how to name compounds. If you’ve never used a dichotomous key before, here’s how it works.
- Start with the top question.
- Answer yes or no and then follow the arrow to the next question.
- Eventually, the line of questioning stops and you end up with a declarative statement. (This is named by.....)
Use this key as you learn to name compounds. You will not, however, be able to use it on quizzes or tests. It is a learning tool only!
____ Download, or view online, the pdf file of the Chemical Nomenclature Dichotomous Key found in the Resources column.
____ Use the key to help you complete the exercise on page 90. You will notice that you are using just one part of the key!
Thursday
____ Read pp. 91- 93 in your text. These are compounds that include a transition metal. (Think: D-block on your Periodic Table.) Most often, one is a transition metal and the other is a non-metal. At this point.
____ Complete the exercise on page 93*. Use the dichotomous key to help you.
HINT: Categorizing the compounds as Type I or Type II does not matter. However, using the Roman numeral correctly DOES!
____ Read pp. 94-95 in your text. These are compounds with more than two elements because they include polyatomic ions. The chart (in yellow) on page 94 is very important. This is a list of common polyatomic ions that you will see often in this class. Please put this chart on the back of your Periodic Table. I’m not adding this little task to the list of assignments found under “Monday” to see who really reads all that I write! I will check for the list on Monday.
____ Complete the exercise on page 95* of your text.
Friday
At this point, there is just one more category of compounds to learn to name. These are covalently bonded non-metal plus non-metal, two-element compounds.
____ Read pp. 96-97 in your text.
____ Please, watch the Crash Course Chemistry Naming video found in the Resources column.
____ Complete the Chemical Naming Worksheet 1* found in the Resources column.
Monday
____ Bring to class:
Exercises on pages 90, 93 and 95
Chemical Naming Worksheet