HEAT EXCHANGE

PROBLEM: To determine the heat lost and the heat gained, when different quantities of water, with different temperatures are mixed.

MATERIALS: Celsius thermometer, 2 styrofoam cups, S.B.B. Balance, hot and cold tap water.

OBSERVATION AND PROCEDURE
TEMP. OF WARM WATER TEMP. OF COOL WATER FINAL TEMP. TEMP. FALL OF WARM WATER TEMP. RISE OF COOL WATER MASS OF COOL WATER MASS OF WARM WATER HEAT LOST HEAT GAINED
1           30 g 30 g    
2           40 g 40 g    
3           50 g 50 g    
4           60 g 60 g    
5           80 g 80 g    
6           60 g 40 g    
7           50 g 100 g    


PROCEDURE AND OBSERVATION :

1. Measure the mass of the warm and cool water first.

2. Record the temperature of the warm and cool water.

3. Mix the cool and warm water.

4. Record the final temperature.

5. Calculate the heat lost and the heat gained.

QUESTIONS:

1. What is the formula for measuring heat lost and heat gained ?

2. The [IMAGE] is the Greek delta letter and is used as the symbol to represent what ?

3. Explain the difference between calorie and specific heat .

4. What is the difference between the following terms: Calorie, calorie, and Kilocalorie ?

5. Is it true that heat tends to flow from a hot object to a cooler object?

6. Can energy be created or destroyed ?

7. State the first law of thermodynamics.

8. Define the term thermodynamics.

9. If the first law of thermodynamics is true, then it must be true, that heat lost by an object, equals the heat gained by the object to which the heat is transferred. Explain why your answer of heat lost and heat gained are not always equal.

10. What purpose does the styrofoam cups serve ?

11. What is a calorimeter ?

12. Name two references indicating that creation is finished.

13. How is the idea of conservation processes in nature opposed to the idea of molecules to man evolution ?

14. (a) Do natural processes usually take a particular direction ? (b) Give an example to demonstrate this. (c) In what law of science is the direction of natural processes taken into account.

15. (a) When heat goes from a hot object to a cold object, is any energy wasted ? (b) Is energy destroyed ? (c) Where does the energy go ?

17. List two Scripture verses that indicate that the world is degenerating.

16. Are degeneration processes in nature opposed to molecule to man evolution ?