Molympics MolympicsComplete as many tasks as you can in the time available.
Names:_______________________
1. Which of the 2 vials contains water? ________ Explain how you know.__________________viscosity, rocks fall slower_______________________________________ (5 points)
2. Find the density of the unknown metal. ______
Using the periodic table, identify the metal_____ and determine the % error_________________________ (known value — calculated value) / known value x 100%
3. Which vial contains the saturated solution?________
Explain how you know._________undissolved at bottom_________________(5 points)
4. Name and write the symbol for elements 14_________, 24____________, and 124____________ (3 points)
5. Determine the number of iron atoms in the sample.
1 mol contains 6.02 x 1023atoms
1 mol of iron has a mass of 55.8g_______________________________________ (10 points)
6. Stand upright. Hold a ping pong ball in you hand, your arm held out in front of you, straight and parallel to the ground. Now, drop it into the beaker. Each member of the team has 1 attempt. Record the total number of times it drops into, and stays in the beaker. _________ (5 points)
7. Identify the 5 pieces of apparatus at this station.
1.__________ 2. __________ 3.____________ 4. ____________ 5. _________ (5 points)
8. Using the Merck index, find the melting point of acetamide _____ and the boiling point of benzene___ (5 points)
9. Using the mass the 5 Bb's, predict the number of Bb's in the vial. The mass of the empty vial is indicated on the vial. _________ ( 10 points)
10. List 10 items made from petroleum._________________________________________________
______________see photo in text _________________________________________________________
________________________________________________________________(5 points)
11. Which solution is the acid ___, which is basic___, which is neutral ____ (5 points) litmus paper
12. Write an ORIGINAL mole joke___________________________________________
________________________________________________________________________
________________________________________________________________(5 points)
13. Pin the nose on the mole. Put on the mole day goggles, Have someone spin you around once, and point you in the correct direction. One turn each. Final resting-place of nose is where your hand touches the board. Measure distance from the X. Calculate your team's average distance_________cm (5 points)
14. Do the puzzle in room 2612. Time limit of 10min. Pass in as soon as you are done. Remember to write the name of your team captain on the sheet. (10 points) element hunt (word search) or crazy compounds (Chem matters Dec 1995) any chemmatters
15. Mole in one. Each member has 2 tries. Record total number of "mole in one" your team gets. Total # _____ (5 points)
16. Use the MSDS book to determine the health risk of carbon disulfide__________ (5 points)
what does msds stand for. etc
17. Using the "Mel-temp" apparatus, determine the melting point of the sample in the melting point tube. From the list provided, identify the solid. (15 points)
18. Which vial contains NaCl? _____. Which vial contains an organic substance? _____. Explain how you arrived at your decision. _________________________________(5 points)
Beaker of water provided. One could also use a conductivity tester and use sugar in place of a white substance that is not soluble in water.
19. State as many reasons as you can for always wearing eye protection in the lab. _________________________________________________________________
______________________________________________________________ (5 points)
20. Place 200 mL of cold water in the drink cooler (Calorimeter). Record the temperature of the 200-mL of water in the drink cooler. Using the tongs provided, remove the sample of metal from the boiling water (assume it is 100oC). Place it in the calorimeter (drink cooler) and record the highest temperature reached. Determine the specific heat capacity of the metal (q = mcDt). Assume the heat lost by the metal = the heat gained by the water. Using the table provided, identify the metal. Replace the metal in the boiling water and empty the calorimeter before moving on to the next station. Show your calculations below.
(20 points)
I had them look up the gas constant R in the appendix of a college text, etc….
This just worked great for me!!! A real eye opener about how kids learn this stuff. Easy to modify to fit your needs and resources.
I got the idea from "Walter Prokopiw" <wprokopiw@horton.ednet.ns.ca> via the chem. ed list
Philip Boese Brawley Union HS Brawley CA
| Questions? Comments?? Philip Boese |
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