The first law of thermodynamics Questions about presentation

Questions about Presentation – 1^st Law of Thermodynamics

Answer these questions in your copy book while listening to the presentation about the first law of thermodynamics.

1.      Write the 1^st Law of thermodynamics in mathematical form.

2.      Give one word for the following phrase: The part of the universe that we study separated from its surroundings by boundaries.

3.      What is the difference between an isolated system and a closed system?

4.      Give one word for the following phrase: The transfer of energy due to a difference in temperature.

5.      Give 2 equations for calculating heat (Q).

6.      Give the definition for work.

7.      Give 3 formulas for work.

8.      Give one word for the following phrase: The sum total of all the energy of the molecules within the system.

9.   What formula would you use to calculate the value for for a di-atomic gas?

10.  2500 J of heat is added to the system, and 1800 J of work is done on the system. What is the change in internal energy of the system?