~ Physics P6: Molecules and Matter ~

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Physical change:
A change in which no new substances are produced.
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Boiling point:
The temperature at which a pure substance boils or condenses.
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Freezing point:
The temperature at which a pure substance freezes.
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Melting point:
Temperature at which a pure substance melts or freezes (solidifies).
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Boyle's law:
For a fixed mass of gas at constant temperature, its pressure multiplied by its volume is constant.
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Pressure:
Force per unit cross-sectional area; for a force acting on a surface, at right angles to the surface.
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Units of pressure:
The pascal (Pa) / Newton per square metre (N/m2).
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Density:
Mass per unit volume.
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Internal energy:
The energy of the particles of a substance due to their individual motion and positions.
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Latent heat:
The energy transferred to or from a substance when it changes its state.
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Specific latent heat of fusion:
energy needed to melt 1 kg of a substance, with no change of temperature.
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Specific latent heat of vaporisation:
Energy needed to boil away 1 kg of a substance, with no change of temperature.
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Other cards in this set

Card 2

Front

The temperature at which a pure substance boils or condenses.

Back

Boiling point:

Card 3

Front

The temperature at which a pure substance freezes.

Back

Preview of the back of card 3

Card 4

Front

Temperature at which a pure substance melts or freezes (solidifies).

Back

Preview of the back of card 4

Card 5

Front

For a fixed mass of gas at constant temperature, its pressure multiplied by its volume is constant.

Back

Preview of the back of card 5
View more cards

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