Thermodynamics Lecture 1

Question 1

What Is a property

Answer 1

A property can be defined as any quantity that depends on the state of the
system and is INDEPENDENT of the path by which the system arrived at
the given state

Question 2

Intensive meaning

Answer 2

properties do not depend on the mass of substance in a system. (e.g.
pressure and temperature)

Question 3

Extensive meaning

Answer 3

Extensive properties depend on the mass of substance in a system. (e.g. volume
– the volume of 10kg of substance is ten times greater than the volume of 1kg of
the same substance)

Question 4

Specific

Answer 4

(extensive) properties are reduced to unit mass of substance to acquire
the meaning of intensive properties. For instance the specific volume

Question 5

Isothermal process

Answer 5

An Isothermal process is a
constant temperature process

Question 6

Isometric process (isochoric)

Answer 6

An Isometric process (isochoric)
is a constant volume process

Question 7

Isobaric process

Answer 7

An Isobaric process is a constant
pressure process

Question 8

Adiabatic process

Answer 8

An Adiabatic process is a process in
which heat does not cross the system
boundary

Question 9

isentropic

Answer 9

The term “isentropic” means constant entropy. A process during which the
entropy remains constant is called an isentropic process, which is
characterized by