Electromagnetic Spectrum

Below is an image for the electromagnetic spectrum. You may need to use it to complete your the EM / Bohr model work packet.

Test and Quiz Reminder

Tomorrow, Wednesday, November 9th, 2011, you will have a quiz covering the hydrate lab that was completed today in class. The calculations for the quiz will mimick the calculations done for the lab and pre-lab. Also, start preparing for the mole test which will be given on Thursday, October 10th, 2011. There is a review packet and key posted a a pdf. on today's date on the class events calendar.

MOLE DOLL

Below is the cut-out image to be used to make your mole doll, if you choose. You will get 10 points extra credit for making just the regular sized doll with no extras. You can get 20 points extra credit if you give your doll a theme. Examples are "Holy Moley" and have your mole dressed as an angel, priest, nun,..... You get the idea. Have your theme deal with the word "mole", or just dress it up in some neat, but tasteful way. You can also get 20 points extra credit by taking the image below and enlarging it and make a super-sized mole. Super-sized is anything over 1 and a half feet in length. I would be totally impressed if a couple of people got together and made a life sized mole. You can save the image of the cut-out below and then print it. You will have to show some sewing skills (or you parents sewing skills) to make this. Involve your mom. Mom's love this stuff. The mole will be due next Friday, the 11th of November, 2011.

Empirical and Molecular Formulas / Flipped Classroom

You are going to be taking part in a teaching experiment. The experiment is known as the "Flipped Classroom". The idea of the flip will be that you will learn about the concepts outside of class and then do your "homework" in class. You will be "lectured" on the new concepts via a series of three VODCasts (Video On Demand) from the comfort of your own home or the computer lab in the HHS library. I have made minnie movies to introduce the new concepts and to guide you through the first seven problems of the packet that you were given in class on Percent Composition, Empirical and Molecular Formulas. The VODCast files can be found on the Events Calendar of the class website under the date, Wednesday, November 2nd, 2011. It is your responsibility to view the videos, write notes on the material, and complete the example problems prior to class on Thursday, November 3rd, 2011. On that Thursday, you will come to class and work on the remaining problems of the packet in small groups. Below is a list of concepts that you need to be familiar with after viewing the VODCasts and doing the example problems in the work packet that was given to you.

• Be able to define percent composition, empirical formula, and molecular formula.
• Know the process of how to find the percent composition of individual elements in a compound.
• Know that empirical formulas are the ratios of elements in a compound based upon the counted unit of the mole.
• Know how to treat the amounts of elements in a compound when percentages are given.
• Know how to deal with a situation where the ratio of an empirical formula does not work out to be whole numbers, but rather one or more of the elements in the compound has a subscript that is a decimal / fraction number.
• Know how to determine a molecular formula by comparing the molar mass of a molecular formula to the molar mass of an empirical formula.
• Know how experimentation is needed to determine the "real" molar mass of a molecular formula. Know how relative molar masses are determined using a mass spectrometer.

Before you come to class on Thursday, November 3rd, 2011, you must have all seven example problems completed in the work packet and notes taken from the VODCasts. You will be graded on this preparation work.

Mole Worksheet

Below is a solutions guide to the Mole Worksheet table that was given out in class today. I realized during 6th hour today that there was not information to work with for CH4 and NH3. Do not worry about finishing the chart for those two substances. The answers for the worksheet are given on the back of the worksheet at the bottom of the page. You may also want to view the VODCast that is posted on today's date, Tuesday, November 1st, 2011 on the class calendar. Remember, you need Quicktime on your computer to view the movie file. You will have a quiz over the material covered on the mole worksheet, so make sure that you try and master the material. The quiz will be going into the homework category of your grade. Also, all questions on the Bean Lab must be completed for tomorrow. The lab will be collected at the beginning of class.