Ch 5

Question 1

Measure of system energy that is unable to be converted into work.

Answer 1

Entropy

Question 2

Energy cannot be created or destroyed, only transformed from one form to another.

Answer 2

1st Law of Thermodynamics

Law of Conservation of Energy

Question 3

Heat will spontaneously flow from a hot region to a cold region.

Cannot extract more work from a system than the quantity of available energy present.

Available energy present is less than the total energy present unless a temperature of absolute zero can be attained.

*the essence of the 2nd law is that when heat is used to do work, the heat is never entirely converted to work. There is always wasted heat.

Answer 3

2nd Law of Thermodynamics

Question 4

Device that converts thermal energy to other forms of energy such as mechanical or electrical.

Answer 4

Heat Engine