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GCSE Physics > P6 - Particles > Flashcards

P6 - Particles Flashcards

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1
Q

What does thr particle model of matter say?

A

Everything is made up of lots of tiny particles

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2
Q

What is density?

A

The measurement of the compactness of a substance

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3
Q

What is the equation for density?

A

Density = mass x volume

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4
Q

What is density measured in?

A

Kg/m3

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5
Q

What are the positions of particles in a dense material?

A

Packed tightly together

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6
Q

What are thr postions of particles in a less dense material?

A

Spread out

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7
Q

If you compressed a less dense material, what would happen?

A

The particles would move closer together and become more dense

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8
Q

What is the symbol for density?

A

Wierd P which is a greek letter for rho

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9
Q

Convert 1g/cm3 into kg/m3

A

1000kg/m3

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10
Q

What are the properties of a SOLID?

A

Strong forces of attraction
Fixed position
High density - particles are close together

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11
Q

What are the properties of a LIQUID?

A

Weaker forces of attraction
Close together but can move past each other
Less dense than solids
More energy than solids

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12
Q

What are the properties of a LIQUID?

A

Weaker forces of attraction
Close together but can move past each other
Less dense than solids
More energy than solids

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13
Q

What are the properties of a GAS?

A

No forces of attraction
Spaced out and move in random directions
More energy than solids and liquids
Much less dense compared to solids and liquids

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14
Q

How do you find the density of a solid object?

A
  1. Weigh the solid
  2. Measure dimensions with a ruler to find volume
    3a. If its an irregular solid, find volume by slowing submerging it into a eureka can filled with water.
    3b. Collect the water displaced in a measuring cylinder and record its volume
  3. Use the density calculation to find the density
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15
Q

What is internal energy?

A

The total amount of kinetic and chemical potential energy of all the particles in a system

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16
Q

What two parts is internal energy made up of?

A

Potential energy stores
Kinetic energy stores

17
Q

What does the potential energy stores refer to in internal energy?

A

Gravitational energy stores
Elastic energy stores

18
Q

What does kinetic energy stores refer to in internal energy?

A

The movement energy of the particles

19
Q

What is the internal energy of a substance or particle?

A

Total energy that its particles have in their kinetic and potential energy stores

20
Q

Heating a substance will increase the kinetic energy of its particles. What will happen to the internal energy?

A

It will increase

21
Q

Changes of state is a physical change not a chemical change. True or False?

A

True

22
Q

What is change of state from a SOLID to a GAS?

A

Sublimation

23
Q

What is change of state from a GAS to a LIQUID?

A

Condensing

24
Q

What is latent heat?

A

The energy needed to change the state of a substance

25
Q

What is specific latent heat?

A

The amount of energy needed to change 1Kg pf a substance from one state to another, without changing its temperature

26
Q

What is specific latent heat of fusion?

A

The amount of energy needed to change 1Kg pf a substance from SOLID to LIQUID state, without changing its temperature

27
Q

What is specific latent heat of vaporisation?

A

The amount of energy needed to change 1Kg of a substance from LIQUID to GASEOUS state, without changing its temperature

28
Q

What is the equation for specific latent heat of fusion?

A

Energy / mass

29
Q

What is the equation for specific latent heat of vaporisation?

A

Energy / mass

30
Q

What increases gas pressure!

A

Faster particles and more frequent collisions

31
Q

What is the equation for a gas of fixed mass at a constant temperature?

A

Constant = pressure (Pa) x Volume (m3)

GCSE Physics (12 decks)

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