Terms

Question 1

The branch of physical science that deals with the various phenomena of energy and the related properties of matter, especially of the laws of transformation of heat into other forms of energy and vice verse

Answer 1

Thermodynamics

Question 2

From “thermo” (meaning heat) and “dynamics” (work).

Answer 2

Thermodynamics

Question 3

A word that means heat

Answer 3

Thermo

Question 4

A word that means work

Answer 4

Dynamics

Question 5

a fluid in which energy can be stored and from which energy can be removed

Answer 5

Working Substance

Question 6

liquid, gas, or vapor that offers little resistance to deformation

Answer 6

Fluid

Question 7

the quantity of matter with a certain volume in space chosen for study

Answer 7

System

Question 8

the mass or region outside the system

Answer 8

Surrounding

Question 9

a real or imaginary surface that separates the system from its surrounding

Answer 9

Boundary

Question 10

It can either be fixed or movable

Answer 10

Boundary

Question 11

a thermodynamic system there is no transfer of matter across the boundary, only energy like heat and work

Answer 11

Closed System

Question 12

a thermodynamic system where energy and matter can cross the control surface

Answer 12

Open System

Question 13

a thermodynamic system where neither mass nor energy crosses the boundaries and it is not influenced by the surrounding

Answer 13

Isolated System

Question 14

pertains to a law of thermodynamics where energy can neither be created nor destroyed, It can only change form

Answer 14

First Law of Thermodynamics or Law of Conservation of Energy

Question 15

pertains to a law of thermodynamics where the entropy of an isolated system not in equilibrium will tend to increase overtime approaching a maximum value at equilibrium

Answer 15

Second Law of Thermodynamics

Question 16

pertains to a law of thermodynamics where the temperature approaches absolute zero, the entropy of a system approaches a constant minimum

Answer 16

Third Law of Thermodynamics

Question 17

pertains to a law of thermodynamics that if two thermodynamics systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other

Answer 17

Zeroth’s Law

Question 18

Any interaction that when unopposed will change the motion of an object, It can cause an object with mass to change its velocity.

Answer 18

Zeroth’s Law

Question 19

Newton’s Second Law of Motion

Answer 19

Law of Acceleration

Question 20

the acceleration of a particular body is directly proportional to the resultant force acting on it, and inversely proportional to its mass

Answer 20

Newton’s Second Law of Motion

Question 21

The force exerted by gravity on mass or the force of an object due to gravity

Answer 21

Weight

Question 22

when do k and g are numerically equal?

Answer 22

at or near the surface of the earth

Question 23

mass over volume

Answer 23

Density

Question 24

The measure of the coolness or hotness of a body

Answer 24

Temperature

Question 25

temperature measured from absolute zero

Answer 25

Absolute Temperature

Question 26

It states that mass is indestructible

Answer 26

Conservation of Mass

Question 27

the energy of a body due to its position or elevation

Answer 27

Gravitational Potential Energy

Question 28

The stored capacity for performing work possessed by a moving body, by virtue of its momentum

Answer 28

Kinetic Energy

Question 29

energy stored within a body or substance by virtue of the activity and configuration of its molecules and the vibration of the atoms within the molecules

Answer 29

Internal Energy

Question 30

The product of the displacement of a body and the component of force in the direction of the displacement. Also,a force moving thru a distance

Answer 30

Work

Question 31

Work done by the system is

Answer 31

Positive

Question 32

Work done on the system

Answer 32

Negative

Question 33

Work done in pushing a fluid across a boundary usually into or out of a system

Answer 33

Flow Work

Question 34

energy in transit from one body or system to another solely because of the temperature difference between the bodies or systems

Answer 34

Heat

Question 35

it states that one form of energy may be converted into another

Answer 35

First Law of Thermodynamics

Question 36

it states that energy is neither created nor destroyed

Answer 36

Law of Conservation of Energy

Question 37

a composite property applicable to all fluids

Answer 37

Enthalpy

Question 38

A theoretical gas composed of many randomly moving point particles whose only interactions are perfectly elastic collision

Answer 38

Ideal Gas

Question 39

Also called as perfect gas

Answer 39

Ideal Gas

Question 40

If the temperature remains constant, the volume of a given mass of gas is inversely proportional to the pressure. Thus, for any two states 1 and 2 of a gas at the same temperature

Answer 40

Boyle's Law

Question 41

Law with constant temperature

Answer 41

Boyle's Law

Question 42

If the pressure is held constant, the volume of a given mass of gas varies directly as the absolute temperature

Answer 42

Charles' Law

Question 43

Law with constant pressure

Answer 43

Charles' Law

Question 44

The amount of energy in a system that is no longer available for doing mechanical work

Answer 44

Entropy

Question 45

That property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alter its volume, but which increases or diminishes should a small amount of heat enter or leave

Answer 45

Entropy

Question 46

No heat is gain, no heat loss, the system is perfectly insulated

Answer 46

Adiabatic

Question 47

refers to the quantity of matter or certain volume in space chosen for the study

Answer 47

Thermodynamic System

Question 48

all matter and space outside the system

Answer 48

Thermodynamic Surroundings

Question 49

a real/imaginary surface that separates the system from its surroundings. It can be fixed or movable.

Answer 49

Thermodynamic Boundary

Question 50

As you change the amount of substance, the property does not change. Independent on its mass.

Answer 50

Intensive Property

Question 51

Property varies with amount. Dependent on its mass

Answer 51

Extensive Property

Question 52

a substance to which heat can be stored and from which heat can be extracted

Answer 52

Working Substance

Question 53

is a working substance whose chemical composition remains the same even if there is a change in phase

Answer 53

Pure Substance

Question 54

a working substance that remains in the gaseous state during its operating cycle and whose equation of state is PV=mRT

Answer 54

Ideal Gas

Question 55

property of matter that constitutes one of the fundamental physical measurements or the amount of matter a body contains

Answer 55

Mass

Question 56

the force acting on a body in a gravitational field, equal to the product of its mass and the gravitational acceleration of the field

Answer 56

Weight

Question 57

amount of space occupied by, or contained in a body and is measured by the no. of cubes a body contains

Answer 57

Volume

Question 58

Degree of hotness and coldness

Answer 58

Temperature

Question 59

force per unit area

Answer 59

Pressure

Question 60

Mass per unit volume

Answer 60

Density

Question 61

volume per unit mass

Answer 61

Specific Volume

Question 62

force on gravity or weight per unit volume

Answer 62

Specific Weight

Question 63

Heat energy due to the movement of the molecules within the substance brought about its temperature.

Answer 63

Internal Energy

Question 64

work due to the change in volume

Answer 64

Flow Work

Question 65

the total heat and heat content of a substance which is equal to the sum of the internal energy of a body and the product of pressure and specific volume.

Answer 65

Enthalpy

Question 66

measure of randomness of the molecules of a substance or measures the fraction of the total energy of a system that is not available for doing work

Answer 66

Entropy

Question 67

the quantity of energy transferred from one system to another

Answer 67

Work

Question 68

energy in transit from a high-temperature object to a lower temperature object

Answer 68

Heat

Question 69

the amount of energy transferred per unit time

Answer 69

Power

Question 70

Total Energy Entering the System = Total Energy Leaving the System

Answer 70

First Law of Thermodynamics

Question 71

The entropy of a substance of absolute zero temperature is zero

Answer 71

Third Law of Thermodynamics

Question 72

most efficient operating cycle

Answer 72

Carnot Cycle

Question 73

If two bodies have the same temperature as a third body, they have the same temperature with each other.

Answer 73

Zeroth Law of Thermodynamics

Question 74

substance that has the equation of state

Answer 74

Ideal Gases

Question 75

Law with Constant Temperature

Answer 75

Boyle's Law

Question 76

Law with Constant Pressure and Volume Process

Answer 76

Charles' Law

Question 77

Process with No friction Loss

Answer 77

Reversible Process