THERMO Flashcards

1
Q

Science that deals with the relationship between heat and other forms of energy

A

THERMODYNAMICS

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2
Q

Thermodynamics was coined by

A

JAMES PRESCOTT JOULE

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3
Q

Father of thermodynamics

A

NICOLAS SADI CARNOT

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4
Q

Liquid that is non saturated

A

SUBCOOLED LIQUID

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5
Q

The phase of liquid that can absorb as much heat as it can without vaporizing

A

SATURATED LIQUID

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6
Q

Property that is dependent on the substance energy content

Measure of average kinetic energy of the different particles in a sample of matter

A

TEMPERATURE

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7
Q

When liquid inside a thermometer is being heated it

A

EXPANDS

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8
Q

Celsius scale is named after

A

ANDERS CELSIUS

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9
Q

Fahrenheit is named after _________ and was the inventor of the first Mercury thermometer that we use now a days

A

GABRIEL DANIEL FARENHEIT

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10
Q

Kelvin scale is named after

A

SIR WILLIAM THOMSON OR LORD KELVIN

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11
Q

Ranking scale is named after

A

WILLIAM JOHN RANKINE

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12
Q

Internal energy in transit from one body of matter to another by virtue of a temperature difference between them

A

HEAT

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13
Q

He proposed that heat is just another form of energy that can be convertible into mechanical form

A

JULIUS ROBERT MAYER

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14
Q

Created the Law of Conservation of Energy

A

HERMAN von HELMHOLTZ

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15
Q

A time when temperature of both system and surrounding reaches the same value

A

THERMAL EQUILIBRIUM

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16
Q

It is the temperature at which the molecules are believed to stop moving

A

ABSOLUTE ZERO

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17
Q

True pressure ,measured above a perfect vacuum

A

ABSOLUTE PRESSURE

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18
Q

Pressure measured from the level of atmospheric pressure by most pressure recording instrument like pressure gage and open ended manometer

A

Gage Pressure

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19
Q

Pressure of the surrounding

A

ATMOSPHERIC PRESSURE

20
Q

The minimum pressure needed to liquefy gas at its critical temperature

A

CRITICAL PRESSURE

21
Q

The ratio of the density of a certain substance to the density of standard substance at the same temperature

A

SPECIFIC GRAVITY

22
Q

Transmission of heat that takes place from molecule to molecule through a body or through bodies in contact

A

CONDUCTION

23
Q

Transmission of heat due to motion of molecule of the medium

A

CONVECTION

24
Q

Transmission of heat that takes place without any intervening medium

25
It is the heat needed to change the temperature of the body without changing its phase
SENSIBLE HEAT
26
The heat needed by the body to change its phase without changing its temperature
LATENT HEAT
27
It is the transfer of thermal energy between neighboring molecules in a substance due to temperature gradient
THERMAL CONDUCTION
28
It states that the time rate of heat transfer through a material is proportional to the gradient in the temperature and to the area at right angles to that gradient through which the heat is flowing
FOURIER'S LAW OF HEAT CONDUCTION
29
The ability of an object to emit radiation
EMISSIVITY
30
Device that measures the amount of infrared radiation each small portion of a person's skin emits
THERMOGRAPH
31
The term energy was coined by
THOMAS YOUNG
32
Measure of energy that is no longer available to perform useful work within the current environment Measure of randomness or disorder of the system
ENTROPY
33
Energy that is stored within the body
INTERNAL ENERGY (U)
34
Energy cannot be created nor destroyed, it can only be transformed from one form to another
LAW OF CONSERVATION OF ENERGY (1st LAW OF THERMODYNAMICS)
35
Heat energy flows spontaneously from hot body to cold body
CLAUSIUS STATEMENT
36
No heat engine that cycle continuously can change all its input energy to useful work
KELVIN - PLANCK STATEMENT
37
It is the heat energy transferred to a substance at a constant ensure process. Represents the total useful energy of a substance
ENTHALPHY
38
States that the total entropy of pure substances approaches zero as the absolute thermodynamic temperature approaches zero
LAW OF ABSOLUTE ENTROPY OR NERNST LAW (3rd LAW OF THERMODYNAMICS)
39
States that equal volumes of different gases at the same temperature and pressure contain equal number of molecules.
AVOGADRO'S LAW
40
When any two bodies are in thermal equilibrium with the third body, they a rein thermal equilibrium with each other
ZEROTH LAW OF THERMODYNAMICS
41
It is an experimental technique used to measure the specific heat of a substance.
CALORIMETRY
42
It states that for a confined fluid the pressure at a point has the same magnitude in all directions
PASCAL'S LAW
43
States that the total property of a mixture of ideal gases is the sum of properties that the individual gases would have if each occupied the same temperature
GIBB'S THEOREM
44
The ENTHALPHY change for any chemical reaction is independent of the intermediate stages provided initial and final conditions are the same for each route
HESS'S LAW
45
It states that the net mass transfer to or from a system during a process is equal to the net change in the total mass of the system during that process
CONSERVATION PF MASS PRINCIPLE