Mass and energy balance

Question 1

What is a steady-state?

Answer 1

relevant factors of a process are operating at a constant time rate (equilibrium)

Question 2

What is unsteady-state?

Answer 2

relevant factors of a process are operating at an unstable state (e.g. storing food in a fridge because the temperature decreases over time)

Question 3

What are extensive properties?

Answer 3

the value of a property depends on the extent or the size of a system (E.g. length, mass etc. - larger the system, the larger the length and mass)

Question 4

What are intensive properties?

Answer 4

The property does not depend on the size of a system (e.g. pressure and temperature)

Question 5

What is the first law of thermodynamics?

Answer 5

The first law of thermodynamics states that energy cannot be created or destroyed. It can only be converted from one form to another