Extra Credit

Extra Credit will be offered each Cycle and is due on Day 7 (even if we don't meet). It is YOUR responsibility to hand in your extra credit ON TIME!!!  I will not allow extensions for any reason, so make sure that you hand this in early if possible!!! 

Complete the extra credit question on an index card. Place your name, the Cycle #, date, and Period on the index card. Put the index card in the extra credit box in the classroom. 

Please do not come to me at the end of the term looking for extra credit!!! Since you are given an opportunity to earn it each Cycle, you will not be given any additional extra credit at the end of each term.

Cycle 1
  • Write a job description for a specific type of chemist, for example an organic chemist. Include the job responsibilities and make the job sound as exciting as possible!
Cycle 2
  • All pennies are the same, aren't they? Research how (and why) pennies changed in 1982. Turn in a short summary on your index card.
Cycle 3
  • Convert using Dimensional Analysis.... Because you never learned dimensional analysis, you have been working at a fast food restaurant for the past 35 years wrapping burgers. Each hour, you wrap 184 hamburgers. You work 8 hours per day, 5 days per week. You get paid every 2 weeks with a salary of $880.94. How many hamburgers will you have to wrap to make one million dollars?
Cycle 4
  • Your assignment this cycle is to create a game that will allow someone to learn the ions on their ion sheet. I will be looking for creativity and originality, and effort. You do not need to do this extra credit on an index card... This extra credit is for both cycle 4 & 5 (only one game needed)
Cycle 5
  • Your assignment this cycle is to create a game that will allow someone to learn the ions on their ion sheet. I will be looking for creativity and originality, and effort. You do not need to do this extra credit on an index card...
 Cycle 6 
  • Write the formula for the following compounds:
  1. Cesium phosphate
  2. Barium fluoride
  3. Tin (IV) hypochlorite
  4. Carbon tetrachloride
  5. Aluminum thiosulfate
 Cycle 7 
  • Balance the following equation:

    Ca3(PO4)2 + SiO2 + C → P4 + CaSiO3 + CO

Cycle 8
  • Balance the following equation:

    I2 + HNO3 → HIO3 + NO2 + H2O

 Cycle 9 
  • How many atoms of aluminum would be produced if 2.3 x 1025 atoms of zinc reacted completely with an excess of aluminum sulfate? (Hint: Is there more than one product?)
 Cycle 10 
  • How many atoms of copper would be produced if 4.8 x 1026 atoms of zinc reacted completely with an excess of copper sulfate? (Hint: Is there more than one product?)
Cycle 11
  • Here is a fun baking project! You need to bring in the completed worksheet and the cookies as well! (Do not bring in until January!)

    Click here for the recipe!
Cycle 12
  • Here is another baking project that involves Limiting Reagents!!! Good Luck!
         Click here for the recipe
Cycle 13
  • Write a stoichiometery haiku. If you don't know what a haiku is, look on the internet for an explanation (and some examples)...
Cycle 14
  • Pretend that you are a water molecule. Explain your journey from being frozen to being boiled. Discuss your proximity to your "neighbors" and your energy (translational and vibrational) at each stage of your transformation.
Cycle 15
  • Determine the amount of energy required to completely change 150 g of ice at -25 *C to steam at 110 *C.
Cycle 16
  • What is caisson disease? What causes it, who gets it and how is it treated?
Cycle 17
  • Create a poster that shows how gas laws work in your everyday life. The poster must include the formula of the gas law that you have chosen and how it relates to the everyday situation that you are describing. You may use any props that you feel would enhance your presentation. The poster must be at least 11 x 14.
Cycle 18
  •  Why are chemists concerned about the oxidation and reduction of metals? What importance does this have in your life?
 Cycle 19 
  •  What is the difference between a fission reaction and a fusion reaction? Which one is used in the nuclear reactors that produce electricity? 
  • In your opinion, are nuclear reactors safe ways to produce electricity? Cite your sources. 
Cycle 20
  • Draw the electron dot structures for the following ions:
    • Carbonate ion
    • Sulfate ion
    • Phosphate ion
Cycle 21
  • Watch the video on how salt dissolves in water
  • http://youtu.be/xdedxfhcpWo
  • Create a comic strip that illustrates how an ionic solid dissolves in water. Be sure to show how the solid dissociates and is surrounded by the water
  • What is the difference between an ionic and a covalent bond? Be sure to site your sources for credit!!!!
Cycle 22
  • What is the molarity of a solution prepared by dissolving 100 g of KBr in enough water to make 300 mL of solution?
  • What volume of a 3.0M solution can be made with 526 grams of sodium chloride?
  • What mass of calcium chloride is required to prepare 500 mL of a 2.5M solution?
  • You must complete ALL 3 problems for credit!!!
Cycle 23
  • What volume of a gas can be produced by decomposing 2.5 tons of potassium chlorate? 
  • Is it possible to write a Keq for this reaction? Explain your answer.
Cycle 24
  • At 700K, H2  and  Br2  are placed in a 2.0 L container where they react according to the following equation:
  • H2 (g)  +  Br2 (g)  ---->   2HBr (g)
    • If the container has 0.681 mole of H2 and 0.440 mole of Br2 and 0.281 moles of HBr at equilibrium, what is the Keq at 700K?
Cycle 25
  • Your task for this cycle is to prepare an acid/base indicator at home and test it on at least 5 household items. See me for details (what you need to hand in...)
  • Here is the recipe for the indicator: 
Cycle 26
  • This is the last cycle (and very short) so the extra credit is EASY!!! Bring in either tissues (2 boxes maximum)/paper towels (up to 3 rolls)/hand sanitizer/hand soap (2 bottle max) for extra credit!
Final Exam Day
  • This extra credit is due on the day of your final exam!!!!
  • Write and decorate a Chemistry Haiku to be displayed in the classroom next year! A haiku is a Japanese poem with a 5, 7, 5 syllable count. Good luck!!!