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Draw a Li atom, next to it, label it’s parts

Draw a Li atom, next to it, label it’s parts. Biology 1 10/13 Extra Credit Question. How much potential energy does a 23kg mass have 6 meters off the ground?. Physics 10/13 Extra Credit Question.

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Draw a Li atom, next to it, label it’s parts

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  1. Draw a Li atom, next to it, label it’s parts Biology 1 10/13 Extra Credit Question

  2. How much potential energy does a 23kg mass have 6 meters off the ground? Physics 10/13 Extra Credit Question

  3. Science Challenge QuestionDo NOT write on the question! Science Challenge 10/14/09

  4. At which temperature do KBr and KNO3 have the same solubility?   A. 27°C  B. 48°C C. 65°C D. 80°C

  5. Which of these shows condensation? AQ BR CS DT

  6. Time’s UP! Pass back your Science Challenge Questions so they are ready for the next class.

  7. What is Calcium’s oxidation number?+ Name an element with which Camight form an ionic bond. Biology 1 10/15 Extra Credit Question

  8. Mrs. Dougherty will check your answers! • Please sit quietly, you may get out your notes for class today.

  9. Oxidation Numbers of Metals and Non Metals

  10. How does the toy car get the energy to move?BonusIf the car’s mass is 8.4g and it moves at a velocity of 1.1 m/s, how much energy does it have? (you may use your lab notebook) Physics 10/15 Extra Credit Question

  11. Mrs. Dougherty will check your answers! • Please sit quietly, you may work on your lab data. We will complete our results and discussion today.

  12. The car is on a “spring” that is compressed when the car is pushed onto it. • When you push the button, the potential energy that was stored in the “spring” is released, making the car move. • If, m = 0.0084 kg and v = 1.1 m/s • Then, KE = ½ x 0.0084 kg x (1.1 m/s)2 • KE = 0.0051 J = 5.1 x 10-3 J

  13. Science Challenge QuestionReview Science Challenge 10/14/09

  14. At which temperature do KBr and KNO3 have the same solubility?   B. 48°C

  15. Which of these shows condensation? DT

  16. True or False (if it is false, correct the statement)Water is a polar ion. Biology 1 10/16 Extra Credit Question

  17. Mrs. Dougherty will check your answers! • Please sit quietly, you may get out your notes for class today.

  18. False • Water is a polar MOLECULE.

  19. True or False A pendulum swinging is a good example of energy being converted from kinetic to potential, and potential to kinetic. Physics 10/16 Extra Credit Question

  20. Mrs. Dougherty will check your answers! • Please sit quietly, you may get out your notes for class today.

  21. TrueEnergy is constantly transferred between potential and kinetic energies. Theoretically, the total energy of the pendulum never changes.In the real world, a swinging pendulum eventually stops due to friction.

  22. Biology 1 10/19Extra Credit Question Matching • Cohesion • Adhesion • Both Cohesion and Adhesion • Water molecules will “defy” gravity and move up from a plant’s roots into it’s leaves. • Water molecules stick to other substances. • Water molecules stick to each other.

  23. Time’s Up! • Take out your homework, Mrs. Dougherty will check it and your extra credit question. • You may check your score updates.

  24. Answer to the extra credit questions. • Cohesion – C. Water molecules stick to each other, like the demonstration with the overhead projector. • Adhesion – B. Water molecules stick to other substances, like the upside down penny. • Both cohesion and adhesion – A. Water molecules “defy” gravity, like the flowers.

  25. Physics 10/19Extra Credit Question • A homerun is hit by Ryan Howard, it flies about 375 feet. • Another homerun is hit by Chase Utley, it flies 403 feet. • Both players run the bases, and tag home to score a run. Assume they both ran the same distance, the balls were pitched at the same speed and they used similar bats. • Which player did more work to score their run?

  26. Based on the information we have, Chase Utley worked harder for his run. • Since the distance they ran, the ball they hit and the bat they swung are the same, the only difference in work is the amount of force they put on the ball. • Utley would have had to use more energy to increase his force.

  27. Biology 1 10/20Extra Credit Question • Draw 5 water molecules, show them hydrogen bonding to each other.

  28. Time’s Up! Take out your definitions that were homework the other night, Mrs. Dougherty will check it and your extra credit question. You may check your score updates.

  29. Hydrogen bonding. The red is Oxygen (negatively charged), the purple is Hydrogen (positively charged)

  30. Physics 10/20Extra Credit Question • How much work is done if a 45 kg box is pushed 16 m? Bonus: If you move the box in 90 seconds, what is your power rating?

  31. SCIENCE CHALLLENGE!!!Follow the directions carefully. • Pick up a question sheet and your index card. • ChooseONLY two questions to answer. • Each question is worth one extra credit point towards your final. • Work Quickly… you only have 5 minutes!!!

  32. TIME’S UP

  33. Biology 1 10/22Extra Credit Question • Draw the structural formula for C4H8 • Hint: There is one double bond.

  34. TIME’S UP

  35. H H H H H H The Answer… C-C=C-C H- -H

  36. Physics 10/22Extra Credit Question • If a Woodchuck could chuck wood, how much work would a Woodchuck do, if his power rating was 20 W and he worked for 60 seconds? • How much energy did he use?

  37. TIME’S UP

  38. The answer… time Work Time x Power = Time x Power = Work time 60 seconds 20 watts = ? J X P = 20 W The woodchuck would do 1200 J of work on the wood. Time = 60 seconds W = ? J So, we have to solve for Work Since Work done is equal to the energy used, (work-energy theorem) the Woodchuck used 1200 J of energy to chuck the wood.

  39. Biology 10/23Extra Credit Question 1.Two atoms that share electrons are held together by ___________ bonds. 2. A __________ is two or more atoms chemically combined. 3. Atoms of the same element with different numbers of neutrons are____.

  40. TIME’S UP

  41. The Answers… • Covalent • Compound • Isotopes

  42. Biology 10/27Extra Credit Question • Why do fall leaves stick together when it rains?

  43. TIME’S UP

  44. The Answer… Adhesion

  45. Physics 10/27Extra Credit Question • What is the difference between instantaneous speed and average speed?

  46. TIME’S UP

  47. The Answers… • Instantaneous speed is your speed at any point in time, for example on the speedometer. • Average speed is the speed calculated when you find the distance traveled in an amount of time.

  48. Biology 10/28Extra Credit Question Which of the following best defines diffusion?   a.  the kinetic energy of motion of particles in an atom  b.  the highest energy level in a particle  c.  the random movements of particles  d.  net movement of particles from high to low concentration

  49. TIME’S UP

  50. The Answer… Which of the following best defines diffusion?  d.  net movement of particles from high to low concentration

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