First Law of Thermodynamics (Closed System)

Question 1

form of energy that is transferred between two systems (or a system and its surroundings) by virtue of a temperature difference

Answer 1

heat

Question 2

state functions

Answer 2

Pressure, Temperature, Volume, Mass, Internal Energy

Question 3

Conditions for reversibility

Answer 3

Absence of friction
Quasi-static process
No heat loss
Ideal fluid

Question 4

based on the law of conservation of energy

Answer 4

first law of thermodynamics

Question 5

path functions

Answer 5

heat and work

Question 6

performed whenever a force acts through a distance

Answer 6

work

Question 7

energy that a system possesses as a result of its elevation in a gravitational field

Answer 7

potential energy

Question 8

Real world thermodynamic processes are?

Answer 8

irreversible

Question 9

thermal energy transferred to or from the system to overcome the intermolecular forces between the molecules resulting to a phase change

Answer 9

Latent energy or Latent heat

Question 10

energy that a system possesses as a result of its motion relative to some reference frame

Answer 10

kinetic energy

Question 11

represents the heat storage capability of a material

Answer 11

specific heat

Question 12

defined as the energy required to raise the temperature of a unit mass of a substance by one degree

Answer 12

specific heat

Question 13

sum of the internal energy and flow work

Answer 13

enthalpy

Question 14

the internal energy of a system associated with the kinetic energies of the molecules

Answer 14

sensible energy

Question 15

a process whose direction can be reversed by infinitesimal changes in some properties of the surroundings, such as pressure

Answer 15

reversible process

Question 16

four components of internal energy

Answer 16

sensible, latent, chemical, and nuclear

Question 17

sum of all the microscopic forms of energy

Answer 17

internal energy

Question 18

the energy required to raise the temperature of a unit mass of a substance by one degree as the volume is held constant

Answer 18

Specific heat at constant volume

Question 19

Constant Temperature

Answer 19

ISOTHERMAL PROCESS

Question 20

a process in which the system and the surroundings do not return to their original condition once the process is initiated

Answer 20

irreversible process

Question 21

thermal energy transferred to or from the system to overcome the intermolecular forces between the molecules resulting to a phase change

Answer 21

Latent Heat

Question 22

refers to the process where an ideal gas expands into a vacuum without any resistance, work being done, or heat transfer

Answer 22

free expansion of an ideal gas

Question 23

consigned the caloric theory of heat to a footnote in history

Answer 23

Joule’s experiment

Question 24

“The energy of a thermodynamic system in equilibrium is partitioned equally among its degrees of freedom.”

Answer 24

equipartition theorem

Question 25

Constant Volume

Answer 25

ISOCHORIC PROCESS

Question 26

It is recognized only as it crosses the boundary of a system

Answer 26

heat

Question 27

An idealized concept that serves as a theoretical benchmark for understanding real processes.

Answer 27

reversible process

Question 28

the energy required to raise the temperature of a unit mass of a substance by one degree as the pressure is held constant

Answer 28

Specific heat at constant pressure

Question 29

refer to the sensible and latent forms of internal energy

Answer 29

thermal energy

Question 30

the internal energy associated with the atomic bonds in a molecule

Answer 30

chemical energy

Question 31

Lavoisier called heat as?

Answer 31

calorific fluid

Question 32

what type of function is enthalpy

Answer 32

state function

Question 33

𝐶𝑣 and 𝐶𝑝 are dependent of?

Answer 33

temperature

Question 34

the internal energy associated with the atomic bonds in a molecule

Answer 34

nuclear energy

Question 35

is energy in transition

Answer 35

heat

Question 36

the system can be returned to its initial state without any net change in the surroundings

Answer 36

reversible process

Question 37

Constant Pressure

Answer 37

ISOBARIC PROCESS

Question 38

property whose value doesn’t depend on the path taken to reach that specific value is known as

Answer 38

state function or point function

Question 39

thermal energy transferred to or from the system which changes the kinetic energy of molecules resulting to a temperature change

Answer 39

Sensible energy or Sensible heat

Question 40

are the mechanisms of energy transfer

Answer 40

heat and work

Question 41

Internal energy is related to the?

Answer 41

molecular structure and degree of molecular activity

Question 42

the internal energy associated with the intermolecular force of attraction between molecules

Answer 42

latent energy