Just Only

Please read this primer on the Quantum Theory of the Atom.

Please watch the video: Dr Quantum – Double Slit Experiment on You Tube.

Please watch the episode of NOVA called The Elegant Universe

We will also study the photoelectric effect by doing a laboratory using a simulation program. To find the laboratory go to the lab section on the website and look under Activities for Photoelectric effect. Here is a direct link to the pdf version. A word doc is also available.

This lab uses the following interactive simulation to study the Photo Electric Effect. To run this program click the green Run Now! button.

We will do this simulated laboratory in class but I would like you to take a look at it ahead of time.

Finally, Richard Feyman has written an awesome article called Atoms in Motion that I’ve assigned you to read.

All of these links are in the Student Resources part of the class website.

I was asked for a source for more practice, especially on the mathematical aspects of these first four chapters. I’ve identified some online worksheets with answers. Let me know if you find these resources helpful.

http://www.math-drills.com/measurement/convert_centimeters_millimeters_001.pdf  (mm and cm)
http://www.math-drills.com/measurement/convert_meters_centimeters_005.pdf(meters and cm)
http://www.math-drills.com/measurement/convert_all_grams_004.pdf (mg, g and kg)
http://www.math-drills.com/measurement/convert_all_volume_006.pdf (mL and L)
http://www.math-drills.com/measurement/convert_between_celsius_fahrenheit_negatives_005.pdf (temp conversions)

Density
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27a.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27b.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27c.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27f.htm

Specific Heat (Cp is used for the S.H. in our book – Specific Heat)

http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210a.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210b.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210c.htm

Main source for all these worksheets:
http://www.fordhamprep.org/gcurran/sho/sho/lessons/lessindex2.htm

Who knew the periodic table could reveal the way to succeed?

Practice to prepare for the upcoming exam. There are many resources available to you. Try this link: SciencebugZ or try to work some problems from the Algebra Lab. Email me if you have any questions.

When it is time to take the exam you will need to:

Get rest before the exam and clear your mind of worries and distractions. Que será, será.

After the exam we will begin Chapter Five. We will also do the lab: Observing Chemical and Physical Change. Please read: How to Describe.

The results of the quiz given last Tuesday were pretty dismal. I’ve decided to give another quiz on Tuesday February 23rd on gases. The format will be very similar – mostly concentrating on the two main gas equations; the ideal gas law and the combined gas law. I will also have a question about gas density and one about gas descriptions.

The more quizzes I give the better as I only count your best five. All quizzes are worth 20 points.

We do not have laboratory on Tuesday – we will be finishing that chapter on gases and beginning the chapter on Thermodynamics.

Another fun-packed Sunday learning chemistry for our class. The day began with a brief review and quiz covering temperature conversions, accuracy vs. precision, and drawing a laboratory set-up. After the quiz we discussed the states of matter and the classification of matter. We then separated a heterogeneous mixture of salt and sand. This gave students an opportunity to apply what they had learned about recording observations. Some lessons learned included how to handle hot glassware and the difference between beakers and erlenmeyer flasks when it comes to removing a solid product from the bottom of a vessel.

Our next topic was a discussion of density. We didn’t have much time for working through the many problems possible with the density equation. It is important to understand how to rearrange the d=m/V equation to also solve for mass (m=d*V) or volume (V=m/d). The best way to learn how to work these problems is to do lots of them. The drill sheet provides some practice but I also suggest: this online density worksheet. Embedded in some density problems is the concept of mass by difference (subtracting out an empty container) and volume by difference (displacement of water, the water level rises when a solid object is submerged).

Our last activity was to explore the properties of an emulsion. Listen to the podcast on Molecular Gastronomy to hear a description of this tasty activity. Students exchanged business cards that they made themselves representing the elements. Cards included slogans such as “I put the C L in clean”, for chlorine. The cards were a lot of fun and hopefully will become flash cards to help students learn the symbols and names of the elements. We ended the day with a discussion of a couple of wonderful books about the elements: The Elements and Nature’s Building Blocks. It is important to remember the seven diatomic molecules: H₂, N₂, O₂, F₂, Cl₂, Br₂, and I₂, and also the two unusual elemental forms for phosphorus (P₄) and sulfur (S₈).

There will be a quiz next week (density, classification of matter, states of matter, names and symbols of the elements, counting atoms in chemical formulas) and the first Exam will occur on February 28th. Homework should be completed through Chapter Three by next week. Laboratory notebooks will be collected on the day of the exam. Next week we will only carry out one laboratory: Identification of an Unknown solid.