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GCSE Physics [AQA] > P3 - Particle Model Of Matter > Flashcards

P3 - Particle Model Of Matter Flashcards

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1
Q

What does the state of a material depend upon?

A

It depends on the strength of the forces of attraction between the particles of the material,

Which is determined by the:

  • structure of the substance and type of bonds holding the particles together
  • temperature
  • pressure
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2
Q

Describe the structure and properties of solids

A

Solids have strong forces of attraction between particles holding them close together in fixed positions, therefore:

  • Solids have a definite shape and volume
  • The particles form a regular lattice arrangement
  • The particles vibrate in their positions
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3
Q

Describe the structure and properties of liquids

A

Particles in liquids have weak forces of attraction. They are randomly arranged and free to move but tend to stick close together.

  • Liquids have a definite volume but don’t have a definite shape
  • The particles move constantly with random motion

Liquids expand slightly when heated.

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4
Q

Describe the structure and properties of gases

A

Particles in gases have very weak forces of attraction, so are far apart. They’re free to move and travel in straight lines

  • Gases don’t have a definite shape or volume
  • The particles move constantly with random motion

Gases expand slightly when heated, or their pressure increases.

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5
Q

How do colliding gas particles create pressure?

A
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6
Q

How does increasing the temperature of a gas increase pressure?

A
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7
Q

What is density?

A
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8
Q

What is the equation for density?

A
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9
Q

How do you measure the density of a solid object?

A
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10
Q

How do you measure the density of a liquid?

A
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11
Q

What is internal energy?

A
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12
Q

Why is change of state a physical change (rather than a chemical change)?

A

It is the same substance you started with, just in a different form.

There are no new substances created.

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13
Q

What is sublimation?

A

The physical change of a substance from a solid directly to a gas, without passing through a liquid state.

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14
Q

What are the changes of state?

A

Liquid to solid = freezing or solidifying
Solid to liquid = melting

Liquid to gas = boiling or evaporating
Gas to liquid = condensing

Solid to gas = sublimating

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GCSE Physics [AQA] (7 decks)

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