As a teacher, I like to think that my presentations are so good that you learn the topic right there in the classroom. However, this isn't usually true. Most likely you gain an awareness of the topic and, hopefully, I get you interested in the topic.

I also try to reinforce skills that will accelerate your learning, such as viewing chemistry as building blocks, force & energy, and mathematics.

I will also remind you to use learning skills and watch out for the barriers to learning.

The real learning comes from going over the material by yourself and making the knowledge your own. In other words, you need to rework it in a way that it becomes your knowledge, not mine.

For example, I go over the early uses of chemistry in class. You may start with what I've covered but then do some of your own research to find out more.

Another example could be my talk about the development of the Periodic Table of the Elements. You may then go to the textbook and/or Wikipedia and learn their view of the development of the Periodic Table. You will also find out there are different types of Periodic Tables. This reinforces what I presented but also gives you more depth and makes it your knowledge. You can learn more about it than what I know. I'm just a starting point for what you can learn.

Homework: Page 99: Follow-up Problem 3.6
A dry-cleaning solvent has a molecular weight of 146.99 g/mole that contains C, H, and Cl. It is suspected to be a cancer-causing agent. When a 0.250g sample was studied by combustion analysis, 0.451 g of CO₂ and 0.0617 g of H₂O formed. Find the molecular formula.

Homework: Page 105: Follow-up Problem 3.7 (d) Write a balanced equation for this chemical statement.
Explosive decomposition of dynamite: liquid nitroglycerine (C₃H₅N₃O₉) explodes to produce a mixture of gases-carbon dioxide, water vapor, nitrogen, and oxygen.

Posters are commonly used at chemistry conferences to communitate the results of projects or research. It allows many people to present their material at the same time in an efficient amount of space. Learning how to do an effective poster is a valuable skill for many purposes.

The poster project is due April 27th. The topic is anything related to chemistry. Tips on designing a poster is found at this URL:

http://www.mc.maricopa.edu/~costello/posters/index.html

An easel or table will be provided for your poster.

Take-Home Test 2. This take home deals with metric sizes and calculations of dilutions, especially dilutions that use a mixture of concentration and volume units.

To download click here (234 k)

Take-Home Test 3. This test deals with colligative properties, specific heat with electrical energy calculations, gas stoichiometry problems, food energy, metric conversions, density. There's also problems dealing with acid-base reactions and stoichiometry calculations.

To download click here (565 k)

For tips for calculating molar mass for a gas, go here.
For calculating H⁺ moles per liter from pH just take the the negative value of the pH and make that the exponent of 10. The answer is moles per liter. Fo example, pH 0.6 is 10^-0.6 or 0.25 moles per liter.

This PowerPoint is the study guide for part 1 of the final. The test is multiple choice. The study guide just goes over topics that is covered on the test.

Click to download (74k)

This PowerPoint is the study guide for part 2 of the final. It was passed out in class, but in case it is lost, you can download it here.

Click to download (978k)