11 thermal properties of matter Flashcards

1
Q

Definition

Heat Capacity

A

The amount of thermal energy required to raise the temperature of the body by 1K or 1°C.

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2
Q

Formula

Heat Capacity

A

Q = C∆θ

Q = thermal energy
C = heat capacity
∆θ = change in temperature

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3
Q

Definition

Specific Heat Capacity

A

The amount of thermal energy required to raise the temperature of a unit mass of the substance by 1K or 1°C.

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4
Q

Formula

Specific Heat Capacity

A

Q = mc∆θ

m = mass in kg
c = specific heat capacity
∆θ = change in temperature

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5
Q

Definition

Melting

A

A process where energy is supplied to change the state of a substance from solid to liquid without a change in temperature.

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6
Q

Definition

Freezing

A

A process where the state of a substance is changed from liquid to solid without a change in temperature.

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7
Q

Definition

Boiling

A

A process where energy is supplied to change the state of a substance from liquid to gas without a change in temperature.

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8
Q

Definition

Condensation

A

A process where the state of a substance is changed from gas to liquid without a change in temperature.

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9
Q

Factors

Evaporation

A
  • Temperature
  • Exposed surface area
  • Relative humidity
  • Wind
  • Pressure
  • Boiling Point of liquid
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10
Q

Definition

Latent Heat

A

The energy needed to change the state of a substance from solid to liquid or from liquid to gas.

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11
Q

Definition

Latent Heat of Fusion

A

The energy needed to change the state of a substance from solid to liquid without a change in temperature.

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12
Q

Definition

Latent Heat of Vaporisation

A

The energy needed to change the state of a substance from liquid to gas without a change in temperature.

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13
Q

Definition

Specific Latent Heat of Fusion

A

The amount of thermal energy needed to change a unit mass of the substance from solid to liquid without a change in temperature.

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14
Q

Definition

Specific Latent Heat of Vaporisation

A

The amount of thermal energy needed to change a unit mass of the substance from liquid to gas without a change in temperature.

Unit: Joule per kilogram, J/kg

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15
Q

Formula

Specific Latent Heat of Fusion/ Vaporisation

A

lf/v = Q/ m

m = mass

Q = thermal energy transferred

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