Danyarl
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Is anyone else completely overwhelmed by the amount of information and chemical formula you have to use for this module?
A huge amount of the stuff you have to learn seems completely alien to me!
In the past two modules it was just about remembering the information, this time you actually seem to need a deep understanding of chemistry.
It's scary, as in my last exam I somehow managed to get full marks, but at the moment, I'd be surprised if I scraped a pass on this module!
Am I the only one who feels this way?
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TrampingRampage
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I find having to learn the experiments and the results hard -_- (titration, test for carbonates or whatever, flame tests and colour etc...)

I got fuyll marks in C2 too
I am also panicking about C3 ahaha, I need 83 UMS to get an overall A*, which I hope I can achieve
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JoyBarking
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Don't worry! It's true, there's a lot of learning in this one, and it's probably the hardest module. It's just a lot of sitting and learning colours and tests. I wrote them all out on one sheet of paper and just look at it every now and then.
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vedderfan94
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(Original post by Danyarl)
Is anyone else completely overwhelmed by the amount of information and chemical formula you have to use for this module?
A huge amount of the stuff you have to learn seems completely alien to me!
In the past two modules it was just about remembering the information, this time you actually seem to need a deep understanding of chemistry.
It's scary, as in my last exam I somehow managed to get full marks, but at the moment, I'd be surprised if I scraped a pass on this module!
Am I the only one who feels this way?
Woo I got full marks in Chem Unit 2 aswell! *high fives*

But I am finding this pretty easy tbh but that is partly because I have an awesome chem teacher who has been doing afterschool revision and given us 5 small sheets that pretty much sum up the whole unit.
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Leeshur
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Oh god, I'm scared about unit 3.
Unit 2 I managed to get 100%, because it was relatively straightforward, I'm clueless about titration.
I think they need to balance out the amount of information in each unit, since it's just too much to comprehend.
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fameisalluneed
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hey it seems everyone got 100% on c2, me too!
this new exam is really hard.
i think the hardest is trying to remember all the colours with the different experiments, and for glass!
titration and moles is fairly easy, for me, as im great at maths:woo: .

i really can't understand batteries , can anyone explain?

by the way, don't worry too much about the colours. in b3 i had to learn an aweful lot of bacteria and names. only ONE came up and it was worth 1 point.

i think it depends on the exam you get. i hope we get an easy one.:o:
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kangeroo
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Yeah all those tests for ions and flame tests are killers!
I remeber them all by making a really stupid story to conect them,
e.g
Barium sounds like bear
Bears sometimes leave in forests
Forests are green
So barium goes green in a flame test

Well it works for me...
K
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Leeshur
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(Original post by kangeroo)
Yeah all those tests for ions and flame tests are killers!
I remeber them all by making a really stupid story to conect them,
e.g
Barium sounds like bear
Bears sometimes leave in forests
Forests are green
So barium goes green in a flame test

Well it works for me...
K
Thank you so much!
I'm going to think of others now. :3
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oh.snap.its.amy
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If i were you i WOULD worry about ALL the tests. When i sat C3 it was about 8 of the marks and i religiously learnt every single one and hence got an A* in it. Do worry about the tests, theres like 20 you need to know if i remember right? And at least 3 of the marks will be on them. Some are relativly straight forward - if you learn the flame tests together ... it's just 5 colours and 5 elements?
Halogens:
Cl + AgNO3 = white precipitate - add dil NH3 = dissolves
Br + AgNO3 = cream precipitate - add conc NH3 = dissolves
I + AgNO3 = yellow precipitate - add conc NH3 doesn't dissolve

And for the titrations just learn:

number of moles = mass/Mr

number of moles = concentration x volume (in dm3)

And rearrange where necessary and you'll be fine!
Soft water = low calcium and magnesium
Hard water = high calcium and magnesium
Hard water = scum -> BAD
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tehforum
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(Original post by fameisalluneed)
hey it seems everyone got 100% on c2, me too!
this new exam is really hard.
i think the hardest is trying to remember all the colours with the different experiments, and for glass!
titration and moles is fairly easy, for me, as im great at maths:woo: .

i really can't understand batteries , can anyone explain?

by the way, don't worry too much about the colours. in b3 i had to learn an aweful lot of bacteria and names. only ONE came up and it was worth 1 point.

i think it depends on the exam you get. i hope we get an easy one.:o:

The Maths content is not hard, plugging in a few numbers is not hard.

Maybe understanding the question, and getting the key bits of information is harder.
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JoyBarking
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For the flame colours I literally just remember five words that seem to stick in the short term.
Li. Red
Na. Yellow
K. Lilac
Ca. Brick (red)
Ba. Green
lired nayellow klilac cabrick bagreen

Because they are so strange it seems to work for me.
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kangeroo
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Also
Litium -> Love -> love hearts are red
So litium goes bright red in a flames test.

Calcium in some baby milk adverts is said to be one of the main building blocks of healthy stuff and that,
Building blocks are bricks
So calcium goes brick red

Yeah they got worse the more i did...
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juliewho
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the first mock test i did in this - 40/45
the one i did yesterday - 17/45
fun stuff
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JoyBarking
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(Original post by kangeroo)
Also
Litium -> Love -> love hearts are red
So litium goes bright red in a flames test.

Calcium in some baby milk adverts is said to be one of the main building blocks of healthy stuff and that,
Building blocks are bricks
So calcium goes brick red

Yeah they got worse the more i did...
Lol no they're pretty useful actually.

For na is yellow, sodium rhymes with podium.
And if you stand on a podium you're really bright and stand out ie yellow.

And then Potassium = Purple (or lilac.)
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Danyarl
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I've hacked the flame test colours with an awful load of bad phrases to remember them by. xD
The precipitates are quite difficult to remember however, and I agree, titrations are quite difficult, I learnt it well just a week ago, only to find today that I've completely forgotten it!

(Original post by Leeshur)
I think they need to balance out the amount of information in each unit, since it's just too much to comprehend.
I definitely feel the same way about this, as I said, the past two units have just been about remembering the text, after that you're free to forget the entire module, this unit appears to require a bit more brainpower to hack the concept of how chemicals are used. Tricky stuff, and not helped by the fact that there's also english literature and physics in the same week!

Good luck to everyone anyway, I'm sure we'll all prevail in the end! :p:
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Danyarl
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This is how I remember them, some of them are quite abstract though.

Copper = Slang word for policeman = Blue uniform = Blue (& green)
Sodium = Sun = Yellow
Potassium = Purple = Lilac
Lithium = Love = Red
Calcium = Cement = Used in brick laying = Brick red
Barium = Bramley apple = Apple green

Hope they help. :p:
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JoyBarking
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NaOH

Cu
Fe 2
Fe 3

Al (white)
Mg
Ca

Dilute nitric acid and silver nitrate

Cl
Br
I

CARBONATES. HCl
makes Co2, which makes limewater cloudy.

SULPHATES. HCl and BaCl
makes white ppt.

AMMONIUM. NaOH
makes ammonia gas. Turns red litmus blue.

NITRATES. Al and NaOH
makes ammonia gas. Turns red litmus blue.
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JoyBarking
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That's the really basic form, and pretty much how i've learnt it so far
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Evanesyne
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My chem teacher didn't even finish teaching the whole course :mmm: I'm having trouble to remember all the tests for elements/compounds :p: I need to get an A to get an overall A* though. Although I know someone who can get an A* by sitting the foundation paper. Lucky sod.
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anna258
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Same I got full marks too!! lol
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