1. Thursday, May 11 th  Take out your homework from last night  Grab a whiteboard, marker, and rag for each person at your table  Move your desks so they are in a cluster rather than a line  Excessive doodling wastes my markers and gets your whiteboard TAKEN AWAY

2. Jeopardy!  The first group to hold up a board with the correct answer on it will get the points  The same person from your group can’t do all of the writing – you must take turns providing answers  All answers must be LEGIBLE or you won’t get points  Cell phones put away! You can use your CALCULATOR but no cell phones  For calculation based questions, you must SHOW WORK and provide proper units for your answers  Your team only gets one chance to answer – so work TOGETHER  The team that gets the points will choose the next question

3. X X Phase changes q = mCΔT Endo or Exo? Definitions 50 40 30 20 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

4. Define endothermic Definitions – 10 Points

5. Define exothermic Definitions – 20 Points

6. Define calorie Definitions – 30 Points

7. Define specific heat capacity Definitions – 40 Points

8. Define calorimetry Definitions – 50 Points

9. A coffee cup cooling off Endo or Exo? – 10 Points

10. An ice cube melting Endo or Exo? – 20 Points

11. NH 4 Cl dissolves in water. The temperature of the water decreases. Endo or Exo? – 30 Points

12. Gasoline fuels a car. Endo or Exo? – 40 Points

13. A chemical reaction for which the change in enthalpy is -550 J Endo or Exo? – 50 Points

14. 5 grams of water are heated from 15°C to 30°C. What is q? q = mC Δ T – 10 Points

15. 5 grams of water are cooled from 30°C to 15°C. What is q? q = mC Δ T – 20 Points

16. A 36 g sample of metal changes from 22°C to 30°C with the addition of 152 calories. What is the specific heat capacity? q = mC Δ T – 30 Points

17. A 35mL sample of water at 25°C is heated with 615 calories. What is the new temperature? q = mC Δ T – 40 Points

18. A 25 g sample of aluminum (C P = 0.215 cal/g°C) at 25°C is put into a 50. g sample of water at 65°C. What is the final temperature? q = mC Δ T – 50 Points

19. How much energy does it take to boil 150. grams of water? Phase changes – 10 Points

20. How much energy is released when 35 g of water freezes? Phase changes – 20 Points

21. Draw a phase change curve for water. Label all states of matter and temperatures. Your slopes must be (relatively) accurate! Phase changes – 30 Points

22. A 25 g sample of ice starts at -5°C. It is heated until it is steam at 105°C. How much energy (in calories) was added to the sample? Phase changes – 40 Points

23. A 35 g sample of steam at 132°C is cooled until it is ice at -15°C. How much energy was released? Phase changes – 50 Points

24. Insert Text for Question Challenge Questions – 10 Points

25. Insert Text for Question Challenge Questions – 20 Points

26. Insert Text for Question Challenge Questions – 30 Points

27. Insert Text for Question Challenge Questions – 40 Points

28. Insert Text for Question Challenge Questions – 50 Points