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Paper 1
Particle model of matter
Internal energy and energy transfers
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Created by
Ellie MacKay
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Cards (9)
What is the internal energy of a substance
The
energy
stored by the particles
the sum of the total
kinetic
and
potential
energies that make up the system
How does heating affect the energy of a substance
Heating transfers
energy
to the
substance
it
increases
the
energy
of the
particles
that make up the
substance
What two things can heating up a substance do ?
Raise
its temperature
change
the state of the substance
What three factors determine the temperature change of a system
Mass
of substance being heated
type
of material (specific heat capacity)
energy
inputted into the system
Define specific heat capacity
The amount of
energy
needed to
increase
the
temperature
of
1kg
of a substance by
1
degree
Describe how the internal energy and temperature of a substance changes when a change of state occurs
The
internal energy
of the substance will be
increased
or
decreased
the temperature of the substance will remain
constant
Define specific latent heat
The amount of
energy
needed to change the
state
of
1kg
of a substance with
no change
in
temperature
What’s the specific latent heat of fusion
The energy required to change
1kg
of a substance from
solid
state to
liquid
state without a change in
temperature
What is the specific latent heat of vaporisation
The energy required to change
1kg
of a substance from
liquid
state to
gas
state without a change in
temperature
