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Below you will find resources and/or assignments for my class arranged by date with the most recent dates at the top of the list. Feel free to explore and remember to email me or talk to me during school if you should have any further questions. My school email address is egibbons@hbgsd.k12.pa.us.

Post Date: 5/16/14 Due Date: NONE Assignment: Click on the link below to access the answer key with explanations for the 2014 Chemistry Final Exam Practice Test. You can either study it online or print it out to take with you. However, because it contains the actual questions that are going to be on the final exam, you are not allowed to use it on the final or copy the questions with the answers onto your reference pack.



__** Due Date: 2/28/14 **__ **Resource**: Go to KhanAcademy and watch the video on valence electrons. Use the link after this sentence or click through the following path that starts with the "Learn" tab at the top of the KhanAcademy home page (just in case you want to see explore some other topics): Learn/Science/Chemistry/Periodic Table, Trends and Bonding/Valence Electrons. Valence Electrons **Assignment**: After watching the valence electrons video, answer the following questions on lined-paper and turn-in by Friday, 2/21/14:
 * Post Date: 2/13/14 **
 * 1) Define valence electrons
 * 2) Discuss why valence electrons are so important in chemistry
 * 3) Explain how valence electrons can be determined for an element by looking at its electron configuration
 * 4) Explain how valence electrons can be determined for an element by looking at the periodic table
 * 5) Tell me the following three things in relation to the video: one thing you learned, one error that was made, and one question that you still have

**Resource**: Visit KhanAcademy to review some videos on periodic trends if you still need some help understanding them before the test! Follow this path and then choose a topic: Learn/Science/Chemistry/Periodic Table, Trends and Bonding
 * Post Date: 2/13/14 **

__** Post Date: 2012 **__
 * Resource: **** Calculator advice for solving mole problems **
 * 1) If you don't have a scientific calculator you can either use a smart phone calculator (turn it sideways for the scientific calculator feature) or Google "online scientific calculator." In addition, you may be able to download a scientific calculator app if your phone doesn't come equipped with an adequate calculator.
 * 2) If the calculator has an "EE" key (this stands for engineering exponent and means "times 10 to the") you solve the problem 6.02 x 10^23 times 2 divided by 3.01 x 10^23 = 4 by typing 6.02 "EE" 23 times 2 divided by 3.01 "EE" 23 = 4. Note that some calculators have an "EXP" which works the same way as the "EE" key.
 * 3) If the calculator does not have an "EE" key or "EXP" key you can either use the "x^y" or the "y^x" or the "^" key as follows to solve the preceeding problem: Type 6.02 times 10 "x^y" or "y^x" or "^" then 23 times 2 parenthesis divided by 3.01 times 10 "x^y" or "y^x" or "^" then 23 end parenthesis and press = to get the answer 4. Note the need to capture the denominator in parenthesis.

NOTE: If you have any calculator questions and/or if the above calculator advice still doesn't help, please email me or ask in class! My school email is egibbons@hbgsd.k12.pa.us. Good luck!