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National 5
Chemistry
Heat Energy
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Created by
Joshua Fraser
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Cards (5)
Exothermic Reaction - a reaction in which
energy
is
released
into the surrounding
Endothermic reaction
- a reaction in which
energy
is
taken
from the surroundings
Combustion
- the burning of a
fuel
in the presence of
oxygen
Alkanes and alcohol's release vast amounts of
energy
when they undergo
combustion
They are excellent fuels
The
energy released
by
fuels
is calculated using the following equation:
E
h
=
Eh=
E
h
=
c
m
∆
t
cm∆t
c
m
∆
t
Eh = the energy released (
kJ
)