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PHYSICS > THERMODYNAMICS > Flashcards

THERMODYNAMICS Flashcards

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1
Q

the measure of how “hot” or “cold” a body is

A

temperature

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2
Q

its formla definition is the average kinetic energy of the molecules of a body

A

temperature

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3
Q

the freezing point of water in Celsius is set at

A

0°C

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4
Q

the boiling point of water in Celsius is set at

A

100°C

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4
Q

the freezing point of water in fahrenheit is set at

A

32 °F

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5
Q

the boiling point of water in Fahrenheit is set at

A

212 °F

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6
Q

what temperature scale has a scale whose zero point is where all the molecular motion steps

A

Kelvin scale

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7
Q

Three Temperature Scales

A

Celsius
Fahrenheit
Kelvin

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8
Q

boiling point of water in Kelvin

A

375.15 K

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9
Q

freezing point of water in Kelvin

A

273.15 K

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10
Q

absolute 0 of Kelvin

A

0

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11
Q

absolute zero in Celsius scale

A

-273.15 °C

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12
Q

absolute zero in Fahrenheit

A

-460°F

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13
Q

is the energy being transferred from one body to another due to the difference in their temperatures

A

heat

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14
Q

is heat a vector quantity or a scalar quantity?

A

Scalar

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15
Q

what is the symbol for heat

A

Q

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16
Q

what is the SI unit for heat

A

Joules, J

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17
Q

the direction of heat transfer or heat flow is ALWAYS from ________ to a ________

A

hot to cold

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18
Q

3 effects of heat transfer

A
  • temperature changes
  • phase change
  • thermal expansion
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19
Q

is the process of measuring heat

A

Calorimetry

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20
Q

it is amount of heat needed to raise the temperature of 1g of an object by 1°C

A

Specific heat capacity

21
Q

what is the symbol for calorimetry

A

c

22
Q

what is the SI unit for calorimetry

A

J/g * °C

23
Q

it depends on the material; each material has a unique specific heat capacity

A

specific heat capacity

24
Q

in calorimetry, it is the total amount of heat gained or lost an object when it changes temperature from T1 to T2

A

Q

25
Q

what is the formula for calorimetry

A

Q = mcΔT

26
Q

what does (m) mean in the formula:
Q = mcΔT

A

mass of the object

27
Q

what does (c) mean in the formula:
Q = mcΔT

A

specific heat capacity

28
Q

what does ΔT stand for

A

change in temperature

29
Q

this is a system that prevents its components from exchanging energy (such as heat) with the surroundings

A

Closed system

30
Q

what is the term when heat will flow until the system is said to be in _________ where A and B reaches a common temperature

A

thermal equilibrium

31
Q

the Law that states that if A is in thermal equilibrium with B, and B is in thermal equilibrium with C, then A is in thermal equilibrium with C

A

Zeroth Law of Thermodynamics

32
Q

What thermodynamic law can be observed when in a closed system, the sum of the heat gained by one body and the heat lost by another body is zero. This means that the total amount of energy inside a closed system does not change?

A

Law of Conservation of Energy

33
Q

it is described as solid, liquid, or gas

A

Phase

34
Q

it is the transition from one phase to another due to addition or removal of heat

A

Phase change

35
Q

what phase change occurs when solid turns to liquid

A

melting

36
Q

what is the opposite of melting?

A

freezing

37
Q

what phase change occurs when liquid become gas

A

vaporization

38
Q

what is opposit of vaporization

A

condensation

39
Q

what phase change occurs when solid becomes gas?

A

sublimation

40
Q

during phase change there is
no change in ————

A

temperature

41
Q

what formula cannot be used to determine the amount of heat involved during phase change

A

Q = mcΔT

42
Q

it is the amout of heat needed for 1 g of an object to undergo phase change

A

Latent Heat

43
Q

what is the symbol for Latent Heat

A

L

44
Q

what is the SI unit for Latent Heat

A

J/g

45
Q

What can be the other unit for Latent Heat

A

cal/g

46
Q

this depends on the material and type of phase transition; each material has a unique latent heat for each type of phase transition

A

Latent Heat

47
Q

is the Latent Heat negative or positive if the heat is released during phase change?

A

L is negative

48
Q

is the Latent Heat negative or positive if the heat is absorbed during phase change

A

L is positive

49
Q

it is the study of heat, energy transformation, work and temperature nad the relation of heat to other forms of energy and properties of matter

A

Thermodyamics

PHYSICS (4 decks)

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