"God created everything by number, weight, and measure." - Isaac Newton

Week 5 Resources/ Assets
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.

Administrative details... did you read this announcement last week? 
On the class Discussion Boards, I have opened up a forum for students to ask general questions about assignments, labs, quizzes, due dates, etc. If you have a question, please feel free to post it to this board, it just may help other students who have the same question.

Also, if you need some further assistance in solving a particular problem, then please upload to your mobile device the app called Appear.in - which permits video chatting - for up to eight students. I have created a room where we can meet to solve problems, called veritas-chemistry. If you are interested in getting a little more help than what can be offered through an email, please let me know by email, and we can arrange a time to meet in the virtual room.

Week 4 Summary
On Monday, with the start of Chapter 3, we introduced the idea of quantitative analysis (which is distinct from qualitative analysis). Please keep in mind that we will NOT get to all sections of that chapter, but you are still responsible for them with respect to quizzes and exams. You should find that nearly all of Chapter 3 is material you should have already learned in math classes and introductory physics. The last two sections of this chapter discuss density and temperature. Please understand exactly what density is measuring. The density of a substance is a physical constant, in the same way boiling point and melting point are. Water has a density of 1.0 g/ mL - no matter where you get it! By contrast, mercury (Hg) has a density of 13.56 g/ mL! Mercury has 13.56 times the matter in a one mL sample than water!

Last Tuesday, you should have gotten some ideas as to how to solve word problems in chemistry. Recollect from your text that you need to:
  • Analyze the problem first, list points of information that is unknown and be able to identify the unknown.
  • Calculate the answer by setting up the problem mathematically, solving for unknowns. Make sure you include conversion factors and always write the units.
  • Evaluate your answer by asking yourself if the answer makes sense.

Looking Ahead in Week 5
In Tuesday's class, we will continue Chapter 4 - Problem Solving in Chemistry. We're going to work on more complex problems near the end of the textbook that involve dimensional analysis. After a short break, we'll all play Kahoot! to prepare you for Test 1, covering Chapters 1 to 4. Make sure you have the Kahoot! app downloaded on your phone so you are ready for gaming!

Please do your best to complete as many problems out of the Chapter 4 worksheets (linked right) as you can, and bring any questions to class, or email me for an Appear.in session.

Please make sure you do the following by:
Tuesday's class - September 25th
  1. Continue reading Chapter 4 - Problem Solving in Chemistry, and work on the Chapter 4 Worksheets (linked right). Note that I have also attached the Answer Key - do not merely copy down answers, the purpose of this key is to help you understand the material.
  2. Due in class: Chapter 3 Worksheets (linked right). Mrs. Hutton will grade these during the first hour, and then return them so you can study.
  3. Be prepared to take the In-class Quiz #5, covering the beginning of Chapter 4.
  4. Bring device to class for a test review on Kahoot!