OCR Physics 9-1 P1 Matter

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  • Created by: JoshOooh
  • Created on: 18-12-17 21:22
Density =
Mass/Volume
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The Law of Conservatio of Mass
Particles do not appear or disappear. (1g of ice melts = 1g of water)
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0 °C = ?K
273
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The average kinetic energy of particles is the
temperature
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Specific heat capacity is the
energy needed to raise the temp of 1kg of a material by 1K
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Heating increases the
internal energy of the material
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The amount of energy needed to raise the temp of an object depends on (3 things)
the type of material, the mass, the temperature rise
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Change in thermal energy =
mass x shc x change in temp
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symbol for specific heat capacity (e.g. mass(kg))
J/kg°C
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The specific latent heat of fusion (or melting) is
the energy transferred when 1kg of a substance chances from a solid to a liquid (or reverse)
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The specific latent heat of vaporisation is
the energy transferred when 1kg of a substance changes from liquid to gas
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Latent heat is about changes in ... whereas heat capacity is about changes in ...
state temperature
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If the temperature of a gas increases then the particles have
a higher average speed
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Higher temperature in gas causes a higher
pressure
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The pressure of a gas is measured in
pascals(Pa)
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1 Pa =
1N/m^2
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Pressure =
force per unit area
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P(s) =
F/A
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Liquid pressure =
Density * Grav field strength * height
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P(l) =
ρgh
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Pressure is the same if the
density and height is the same
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Boyle's Law
P1V1 = P2V2
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Pressure and volume are
inversely proportional
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Gas exerts pressure through
collisions with objects of surfaces
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Three ways to increase pressure
Increasing energy (heating gas), increasing collisions (num of particles), decreasing volume of container
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Pressure and temperature are
proportional
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Gases in the atmosphere exert
atmospheric pressure
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When you pump out air of an object atmospheric pressure causes
the object to collapses (squashing a coke can)
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Diameter of an atom
10^-10
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Atmospheric pressure =
100kPa
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Pressure is bigger near the surface of the Earth due to the
weight of air above
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Other cards in this set

Card 2

Front

The Law of Conservatio of Mass

Back

Particles do not appear or disappear. (1g of ice melts = 1g of water)

Card 3

Front

0 °C = ?K

Back

Preview of the front of card 3

Card 4

Front

The average kinetic energy of particles is the

Back

Preview of the front of card 4

Card 5

Front

Specific heat capacity is the

Back

Preview of the front of card 5
View more cards

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