Terminologies

Question 1

System (definition and types)

Answer 1

Portion of universe being studied
A. Open system- transfer of matter and energy
B. Closed-transfer of energy
C. Isolated-no transfer of matter or energy

Question 2

Surroundings

Answer 2

Portion of universe other than the system

Question 3

Boundary

Answer 3

Real/imaginary or fixed/moving surface that separates the ststem from its surroundings and where exchange of matter and energy takes place

Question 4

Diathermic boundary

Answer 4

Thermally-conducting boundary. Change of state is observed when two objects of diff temp is brought into contact

Question 5

Adiabatic boundary

Answer 5

A thermally-insulating boundary in wc no change of state is observed even when two objects of different temperatures come into contact.

Question 6

Equilibrium state

Answer 6

State in which
a. Properties of a system do not vary with time
b. System is uniform. No internal heat, work, temp, pressure, concent or velocity gradient
c. Net flows of heat, mass, or work is zero
d. Net rate of chemical reactions is zero

Question 7

Mechanical Equilibrium

Answer 7

State that exists between two subsystems of equal pressure

Question 8

Thermal Equilibrium

Answer 8

State that exists between two subsystems of equal temperature

Question 9

Process

Answer 9

Any change that undergoes within a sustem that causes shift from obe equilibrium state to another

Question 10

Types of process

Answer 10

A. Quasi-static process- slow process, system internally adjusts
B. Steady-flow- fluid flows through a controlled volume. Properties remain constant.
C. Adiabatic process- thermodynamic process in which net rate of heat transfer is zero
D. Isothermal process- process that occurs at constant temperature
E, Isobaric process- process that occurs at constant pressure
F. Isochoric/isometric process- occurs at constant volume

Question 11

State or Point Functions

Answer 11

Functions that depend on the current state of the system and not on how the system reaches the state

Question 12

Path Functions

Answer 12

Functions that depend on the path followed during the process.

Question 13

The Zeroth Law of Thermodynamics was formulated by

Answer 13

Ralph Howard Fowler

Question 14

The Zeroth law of thermodynamics states that

Answer 14

if body A is in thermal eq with body B and body B is in thermal eq with body C, then body A is in thermal eq with body C