Monday, May 14, 2018



The first part of Unit 8 (Organic Chemistry) ends with a Unit Test on Wednesday, May 16th!

To help students prepare, please find the Power Point Notes HERE, along with a PDF of the Study Guide based on those notes HERE.

Students should also have a copy of the Organic Compounds Guide (three-hole punched) as part of their materials for Wednesday's Test.

Thursday, May 10, 2018


This is the last syllabus of the year.   Unit 8 is divided up into two topics:  ORGANIC chemistry and NUCLEAR chemistry.

There will be a (non-calculation) "organic test" given in the second week.  This test must be made up before Memorial Day Weekend.  There is a comprehensive final for the spring semester in the final week.

Friday, May 4, 2018


In Thursday's class, we talked about the difference between organic (based on carbon) and inorganic (based on some other element) molecules.   Life, of course, is based on organic molecules.

There are four major classes of carbon-based compounds used by living things:   carbohydrates, lipids, proteins and nucleic acids.

Each of these compounds is made of individual 'building blocks' called MONOMERS.   The monomers are linked together with covalent bonds to make large chains called POLYMERS, and the process of making polymers is referred to as POLYMERIZATION.

Here's a video from Bozeman Science, with animations, that gives some nice background on monomers and polymers:

Carbohydrates are carbon-based macromolecules based on C, H and O.  They are polar and readily dissolve in water.

A simple sugar by itself, like glucose, is termed a monosaccharide, and serves as a 'building block' (monomer) to build a larger chain of many molecules called a polymer. In the case of carbohydrates, the polymer made from many monosaccharides linked together by dehydration reactions is called a polysaccharide.

Examples of polysaccharides made of glucose include cellulose, glycogen and starch.   Each of these glucose polymers are biologically important. 

 Finally, here's yet another video by AP Chemistry teacher Paul Andersen, this on the class of macromolecules called PROTEINS.   

 PROTEINS often are used to build extremely useful and specific molecules called ENZYMES:


Monday, April 30, 2018


Students:  Just a reminder that your Unit 7 Test is on Wednesday, May 2nd.  You should come to class with your completed Composition Book, and plan on taking advantage of additional time available at lunch and after school that date.

Composition Books will also be collected this week in order to assess grades on the three Labs in Unit 7.

On Tuesday and Thursday's classes this week, due to the testing schedule, our classes will begin new material on organic chemistry.  Students should prepare for this material by reading Chapter 22 as soon as possible, but please note that your Unit 7 test is largely based on Chapter 19, with some material from Chapters 20 and 21.  Nothing discussed on Tuesday's class will be on your exam the next day.

Monday, April 23, 2018


Mr.Hatfield's Chemistry students have completed their Notes on material from Chapter 19.   They can download a copy of the Power Point containing those Notes HERE:

Students received a Study Guide based upon this section of Notes in Monday's class, but beginning tomorrow the class will transition into new material, on electrochemistry (chapters 20-21 in the text).

Sunday, April 15, 2018


Tyler DeWitt has made a very handy, easy-to-understand video that uses the formation of an ionic compound (NaCl, sodium chloride) to illustrate the logic of oxidation-reduction reactions, sometimes called 'redox' reactions, as described in Chapter 20.

Tyler not only gives an example of oxidation numbers (20.2), but he also shows how to to use these numbers to describe 'half-reactions' (20.3)

While there is no worksheet based upon this video, this is highly-similar to how students will be introduced to these concepts in Lecture, and is worth repeated viewings:

Wednesday, April 4, 2018


Students were shown this video in today's class.   Paul Andersen demonstrates the centrality of water to most acid-base chemistry, and explains how to calculate equilibrium constants for acids (Ka) and bases (Kb), and how to express those as pKa's or pKb's: