Definitions part 2

Question 1

define macroscopic energy

Answer 1

Macroscopic energy refers to the energy of a system that can be observed and measured directly,
without considering the microscopic structure of the system. It’s the energy that a whole system
possesses with respect to a fixed external reference. Including kinetic and potential energy

Question 2

____ energy refers to the energy of a system that can be observed and measured directly, without considering the microscopic structure of the system. It’s the energy that a whole system possesses with respect to a fixed external reference. Including kinetic and potential energy

Answer 2

macroscopic

Question 3

define kinetic energy

Answer 3

The energy associated with the motion of a system as a whole.

Question 4

define microscopic energy

Answer 4

Microscopic forms of energy are those related to the molecular structure of a system and are independent of an outside reference. It’s the energy at the scale of individual atoms and molecules
within a system. Including:
translational, rotational, vibrational energy

Question 5

__ forms of energy are those related to the molecular structure of a system and are independent of an outside reference. It’s the energy at the scale of individual atoms and molecules
within a system. Including:

Answer 5

microscopic

Question 6

define translational energy

Answer 6

The energy associated with the motion of molecules moving in space.

Question 7

define rotational energy

Answer 7

The energy due to the rotation of molecules about their axes.

Question 8

define vibrational energy

Answer 8

The energy due to the vibrations of atoms within a molecule.

Question 9

define internal energy in terms of microscopic energy

Answer 9

Internal energy 𝑼 (or 𝒖 per unit mass) is the total microscopic energy possessed by a substance
due to the microscopic motion and interactions of its particles, which includes the sum of all
microscopic kinetic, translational, rotational and vibrational energy of the molecules.

Question 10

______ energy 𝑼 (or 𝒖 per unit mass) is the total microscopic energy possessed by a substance
due to the microscopic motion and interactions of its particles, which includes the sum of all
microscopic kinetic, translational, rotational and vibrational energy of the molecules.

Answer 10

internal

Question 11

define potential energy

Answer 11

Potential energy is the energy possessed by a mass (𝑚) due to its position in the gravitational (𝑔) field measured from a reference datum point (𝑧)

Question 12

define kinetic energy

Answer 12

Kinetic energy is the energy possessed by a mass (𝑚) due to its velocity (𝑉)

Question 13

define an intensive property

Answer 13

Intensive property is independent of the total quantity of a substance. Pressure and temperature are examples of intensive properties

Question 14

define an extensive property

Answer 14

Extensive Property depends on the amount of substance present. Mass and volume are examples of extensive properties