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Slide 2

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In an exothermic reaction ­ heat energy is
given out ­ temperature rises.
· In an endothermic reaction ­ heat energy
is taken in ­ temperature drops.…read more

Slide 3

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WHY???
· All to do with MAKING and BREAKING
bonds.…read more

Slide 4

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When 2 atoms joined together by a
covalent bond are separated ie. The bond
is broken ­ the energy required to do this
is taken from the surroundings ­ ie.
Reactions that require an energy input are
ENDOTHERMIC.…read more

Slide 5

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When 2 atoms are joined together ie a
new bond is made ­ energy is released to
the surroundings ­ reactions that release
energy to the surroundings are
EXOTHERMIC.…read more

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