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Jeopardy Freezing Melting Heat and Its Meas. Vapor Pressure

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Presentation on theme: "Jeopardy Freezing Melting Heat and Its Meas. Vapor Pressure"— Presentation transcript:

1 Jeopardy Freezing Melting Heat and Its Meas. Vapor Pressure
Triple Point Potential Energy Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy

2 $100 Question from Freezing/Melting Diagram
What is the freezing point of the substance?

3 $100 Answer from Freezing/Melting Diagram
5oC

4 $200 Question from Freezing/Melting Diagram
What is the melting point of the substance?

5 $200 Answer from Freezing/Melting Diagram
5oC

6 $300 Question from Freezing/Melting Diagram
What letter represents the range where the solid is being warmed?

7 $300 Answer from Freezing/Melting Diagram

8 $400 Question from Freezing/Melting Diagram
What letter(s) shows a change in kinetic energy?

9 $400 Answer from Freezing/Melting Diagram
A, C, E

10 $500 Question from Atoms What letter(s) shows a change in potential energy?

11 $500 Answer from Freezing/Melting Diagram
B, D

12 $100 Question from Heat and Its Measurement
How many joules of heat are given off when 3.5g of water cool from 75oC to 25oC?

13 $100 Answer from Heat and Its Measurement
-730J

14 $200 Question from Heat and Its Measurement
How many joules does it take to melt 25g of ice at 0 oC? .

15 $200 Answer from Heat and Its Measurement
8400J

16 $300 Question from Heat and Its Measurement
How many joules are given off when 120g of steam condense to liquid water?

17 $300 Answer from Heat and Its Measurement
ans: J

18 $400 Question from Heat and Its Measurement
How many joules of heat are necessary to raise the temperature of 40g of water from 20oC to 90oC?

19 $400 Answer from Heat and Its Measurement
ans: 12000J

20 $500 Question from Heat and Its Measurement
How much heat is released when 75g of water at 0oC freezes?

21 $500 Answer from Heat and Its Measurement
-25000J

22 $100 Question from Vapor Pressure
At what temperature would Liquid A boil at an atmospheric pressure of 400 torr? Mass 07

23 $100 Answer from Vapor Pressure
32oC

24 $200 Question from Vapor Pressure
At what temperature would Liquid B boil at an atmospheric pressure of 400 torr?

25 $200 Answer from Vapor Pressure
70oC

26 $300 Question from Vapor Pressure
At what temperature would Liquid C boil at an atmospheric pressure of 400 torr?

27 $300 Answer from Vapor Pressure
95oC

28 $400 Question from Vapor Pressure
How low must the atmospheric pressure be for Liquid A to boil at 35oC?

29 $400 Answer from Vapor Pressure
550 torr

30 $500 Question from Vapor Pressure
What is the normal boiling point of Liquid A?

31 $500 Answer from Vapor Pressure
43oC

32 $100 Question from Triple Point Diagram
What section represents the gas phase?

33 $100 Answer from Triple Point Diagram
B

34 $200 Question from Triple Point Diagram
What letter represents the triple point?

35 $200 Answer from Triple Point Diagram

36 $300 Question from Triple Point Diagram
What is this substance’s normal melting point?

37 $300 Answer from Triple Point Diagram
60oC

38 $400 Question from Triple Point Diagram
What will happen to the melting point as the pressure is increased from 0.5 to 1.0 atm?

39 $400 Answer from Triple Point Diagram
It increases from 45 to 60oC

40 $500 Question from Triple Point Diagram
Would an increase in pressure cause this substance to freeze or melt?

41 $500 Answer from Triple Point Diagram
freeze

42 $100 Question from Potential Energy
What letter represents the potential energy of the reactants?

43 $100 Answer from Potential Energy
B

44 $200 Question from Potential Energy
What letter represents the heat of reaction (ΔH)?

45 $200 Answer from Potential Energy
D

46 $300 Question from Potential Energy
What letter represents the activation energy of the forward reaction?

47 $300 Answer from Potential Energy

48 $400 Question from Potential Energy
Is the reverse reaction endothermic or exothermic?

49 $400 Answer from Potential Energy
Endothermic

50 $500 Question from Potential Energy
Is the forward reaction endothermic or exothermic? Virginia 05

51 $500 Answer from Potential Energy
Exothermic

52 Final Jeopardy Determine the heat required to convert 62.0 grams of ice at °C to water at °C. The specific heat capacity of ice is 2.05 J/g °C.

53 Final Jeopardy Answer Ans. 4.79E4J 47 900J

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