Chapter 3.2

Question 1

What are isolated systems? What is the internal energy in this system?

Answer 1

• not capable of exchanging energy or matter with their surroundings
• > as a result the internal energy is zero

Question 2

What are closed systems? Give an example

Answer 2

• capable of exchanging energy but not matter with their surroundings
• classic experiment involves gases in vessels with movable pistons

Question 3

What are open systems

Answer 3

• can exchange both matter and energy with their environment

- >energy is transferred in the form of heat or work

Question 4

What are state functions? Give examples

Answer 4

• thermodynamic properties
• > defined by the fact that they are independent of the path taken to get to a particular equilibrium state

-state functions include: pressure, density, temperature, volume, enthalpy, internal energy, gibbs free energy and entropy

Question 5

What are process functions? Give examples

Answer 5

• they describe the path taken to get to from one state to another
• > eg; work and heat