Q: "What is the nitrate?"
A: "Double time." 

Week 10 Resources/ Assets
Updated November 2, 2018
Please make sure you READ everything on this page or you will miss important details. I will archive past weeks Announcements pages for a limited time only under the Trimester 1 tab, if you need to go back to a particular weeks information for any reason.

Week 9 Summary
On Tuesday, we discussed in class both monatomic and polyatomic ions. Recollect that by looking at the periodic table of elements, you can determine what kinds of monatomic ions will form, based upon the "Group" their respective elements fall under.
  • Group 1A elements (the alkali metals such as lithium, sodium and potassium) tend to lose a single electron and take on a 1+ charge as a result.
  • Group 2A elements (alkaline earth metals such as beryllium, magnesium, and calcium) tend to lose two electrons, taking on a 2+ charge.
  • Group 6A elements (oxygen, silicon) have six valence electrons, and in their effort to acquire two more, they form anions with a 2- charge.
  • Group 7A elements (halogens such as fluorine, chlorine, bromine and iodine) have seven valence electrons and take on a 1- charge as they acquire a single electron.
  • Transition metals such as iron (Fe), copper (Cu), and cobalt (Co), nickle (Ni), lead (Pb), and tin (Sn) can lose any number of electrons, thus, when naming them, you indicate their oxidation status (how many electrons they lost) with a Roman numeral. The Fe2+ ion is called "iron(II) ion," and Fe3+ is called iron(III) ion.
We also spent time discussing the structures and names of 25 polyatomic ions - in the form of an extra credit quiz. Recollect what a polyatomic ion is - it is a cluster of atoms that are tightly bonded together, that act as a single unit, and collectively have a charge. Only one of the polyatomic ions we studied, ammonium (NH4+), is positively charged; the others are all anions, carrying various negative charges due to an excess of electrons. On Test #2, covering Chapters 5 and 6, you will need to either write the name, or formula for the 25 polyatomic ions.

Upcoming Week 10
Next week we will complete Chapter 6 by discussing the following sections:
  • Section 6.4 - Ionic Compounds: writing their formulas and naming them
  • Section 6.5 - Molecular Compounds and Acids: naming binary molecular compounds and acids.
  • Don't forget that we will also have a Kahoot! on Tuesday, so please make sure - if you have a device - to bring it. We only need one device per team of two or three players.
If time permits on Tuesday after the quiz, Chapter 6 completion, and Kahoot!, we will start Chapter 7 - Chemical Calculations.

Since we are completing Chapter 6 on Tuesday, Test #2, covering Chapters 5 and 6 will be due Tuesday, November 13th. That exam will be sent to your parents emails next week. Please see them for the exam.
So that you are adequately prepared for classes next week, please complete the following:
Tuesday's class - November 6th:
  • Complete as many homework problems from Chapter 6 as you can, and bring any questions to class.
  • Be prepared to take the In-class Quiz #10, on writing and naming ionic compounds.