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Gcse Physics > Topic 3 > Flashcards

Topic 3 Flashcards

1
Q

What are Properties of Solids?

A

Strong forces of Attraction
Particles don’t have much energy to vibrate
In fixed positions
A regular arrangement

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2
Q

What are Properties of Liquids?

A

Weaker forces of attraction
Moves in random directions
Have more energy than Solids
Can move past each other

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3
Q

What are the properties of Gases?

A 
No forces of Attraction
Free to move 
Far apart
More energy than liquids & solids
Move in random directions and Speeds
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4
Q

What is Pressure?

A

The force exerted per unit area

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5
Q

How can you increase pressure?

A

By increasing the number of collisions per second by increasing Temperature.

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6
Q

Decreasing the temperature of a gas decreases what and why?

A

When their is a lower temperature particles have lower Kinetic energy which means that their are fewer collisions per second, meaning their are fewer energy collisions, decreasing pressure.

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7
Q

Increasing the temperature of a gas increases what and why?

A

When their is a Higher temperature particles have Higher Kinetic energy which means that their are more collisions per second, meaning their are Higher energy collisions, this increases the pressure

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8
Q

What is Density?

A

Is a measure of the compactness of a substance which tells you the mass of a given volume.

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9
Q

What is the equation for Density?

A

Density(Kg/m3)=Mass(Kg)/Volume(m3)

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10
Q

Why are solids dense?

A

Because the particles are packed close together and solids have a lot of mass

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11
Q

What is Internal Energy?

A

The total kinetic and Potential energy of all particles that make up a system.

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12
Q

If you increase the temperature of a solid what does it mean for the Internal energy?

A

You increase the internal energy.

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13
Q

What is a solid to a liquid called?

A

Melting

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14
Q

What is a liquid to a gas called?

A

Evaporating or boiling

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15
Q

What is a gas to a liquid called?

A

Condensation

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16
Q

What is a liquid to a solid called?

A

Freezing

17
Q

What is a solid to a gas called?

A

Sublimating

18
Q

What is Specific latent heat?

A

The energy needed to change the state of 1kg of a mass with no change in temperature.

19
Q

What is Specific latent heat of fusion?

A

The energy needed to change 1kg of a substance from a solid to a liquid with no change in temperature

20
Q

What is Specific latent heat of Vaporization?

A

The energy needed to change 1kg of a substance from a liquid to a gas with no change in temperature.

21
Q

What is the Equation for Specific latent heat?

A

Energy(j) = Mass(kg) x Specific latent heat(J/kg)

E=ml

Gcse Physics (9 decks)

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