AQA Chemistry Unit 3: Revision Notes

Hi,

This powerpoint briefly covers most of the Unit 3 AQA specification.

I will gladly explain anything featured on this powerpoint further.

I'll admit Chemistry is definitely my weakest science however I hope this will be of use to you all!

Happy Revising and GOOD LUCK with your exams!

:D 

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  • Created by: Luke (:
  • Created on: 21-06-11 12:27
Preview of AQA Chemistry Unit 3: Revision Notes

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TRENDS IN
REACTIVITY
When explaining reactivity it
is important to recall the
reactivity series of metals,
this will explain which metals
are reactive enough to
displace - push out -…read more

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REACTIVITY IN GRP
1
Lithium + Water -> Lithium
Hydroxide + Hydrogen
2Li(s) + 2H2O(aq) -> 2LiOH(aq) + H2
(g)
ALL GRP 1 REACTIONS WITH WATER FOLLOW THIS
EQUATION PATTERN BUT AS YOU DESCEND THE GROUP…read more

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EXPLAINING
In REACTIVITY
Group 1
As you descend group 1, the single
electron on the outermost shell,
falls further away from the nucleus.
The nucleus is the hub of the atom
and generates the electrostatic `pull'
which attracts and holds electrons
in place. Electrons further away from
the nucleus have less force holding…read more

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EXPLAINING
In REACTIVITY
Group 7
Elements in Group VII want to gain
electrons, this is easier for them to
do when the electrostatic attraction
is greater, this is why elements at
the top of the group are more
reactive as they have more available
`pull' to draw in the needed
electron.…read more

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SHIELDING
Very important concept.
The idea that every
electron in an element
contributes to the
shielding (weakening) of
the electro-static pull,
making it easier for…read more

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