AQA GCSE Chemistry Exam Unit 1 (C1) 15th June 2012 (New Spec.)

I put that the gene with deisred characteristics are cut using an enzyme from the chromosome of the jellyfish and placed in the chromosome of the zebra fish.

What did you get for the Drug question ? the last part ?

I put no

Reply 41

Rikathetika

5

Original post by LjWol

I put no

Sorry guys but aren't we talking about Chemistry?

Reply 42

i9l7f

Will we post here once the exam is done? Sorry I'm new to this…haha

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Reply 43

Rikathetika

5

Original post by i9l7f

Will we post here once the exam is done? Sorry I'm new to this…haha

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I think so, I think AQA You're allowed they did for the biology

Reply 44

i9l7f

Original post by Rikathetika

I think so, I think AQA You're allowed they did for the biology

Ok that's good. Good luck everyone

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Reply 45

LjWol

2

I'm just wondering whether we will be given an equations sheet for the exam as n my mocks i was given one :smile:

Reply 46

charliemaudsley

Original post by LjWol

I'm just wondering whether we will be given an equations sheet for the exam as n my mocks i was given one :smile:

you get one in the exam :smile:

Reply 47

Rikathetika

5

Original post by charliemaudsley

you get one in the exam :smile:

Are they the equations for the limestone or do you have to learn them

Reply 48

Mrkingpenguin

18

Original post by LjWol

I'm just wondering whether we will be given an equations sheet for the exam as n my mocks i was given one :smile:

You mean the sheet with the periodic table/reactivity series on it?

Equations..no

Reply 49

charliemaudsley

Original post by Rikathetika

Are they the equations for the limestone or do you have to learn them

you have to learn the limestone equation, you just get a periodic table and things but thats it, its really hard, but hopefully they'll lower the grade boundaries :smile:

Reply 50

AZ786

I am doing the exam on friday too, really nervous
Also, any last minute revision A* tips because i am finding it really hard to remember everything!! :frown:

Reply 51

MajorRisk

2

CaCO3 (Limestone Thermally Decomposes) ----> CaO (Calcium oxide) + CO2 (Carbon dioxide)
________________

Calcium carbonate (limestone) also reacts with acid to form Calcium salt, carbon dioxide and water.

CaCO3 + H2SO4 (Sulphuric acid) ------> CaSO4(Calcium sulfate/calcium salt)+ CO2 + H2O
__________
Calcium Oxide reacts with water to produce Calcium Hydroxide.
CaO (calcium oxide)+ H2O ---> Ca(OH)2 (Calcium Hydroxide, otherwise known as limewater and is used for neutralising acidic fields (Soil)because it is an alkali)

______________
Limewater (Calcium Hydroxide) turns cloudy when Carbon dioxide is present.
Ca(OH)2 (Calcium Hydroxide)+ CO2 ---> CaCO3 (Limestone)+ H2O
The limestone that is formed is what turns the limewater milky/cloudy.
I think you can get a A*/A from just knowing the Word Equation as the marks are either for the Word Equation shown or Symbol Equation, but I find Word Equation easier.

For the first two reactions I think any metal in Group I will work for it (Just substitute the metal in for Calcium) But the other metals Symbol equation will be different in some equations so thats why the Word Equation is easier to remember.
I found January paper pretty easy questions though, as always I was rushed for time...got an A* by 2 marks though :cool:

If I was to bet, i'd bet Metal Extraction would come up since it is a massive unit...

Any advice on time management, what do you guys do? And good luck on exam...

Reply 52

charliemaudsley

Original post by MajorRisk

CaCO3 (Limestone Thermally Decomposes) ----> CaO (Calcium oxide) + CO2 (Carbon dioxide)
________________

Calcium carbonate (limestone) also reacts with acid to form Calcium salt, carbon dioxide and water.

CaCO3 + H2SO4 (Sulphuric acid) ------> CaSO4(Calcium sulfate/calcium salt)+ CO2 + H2O
__________
Calcium Oxide reacts with water to produce Calcium Hydroxide.
CaO (calcium oxide)+ H2O ---> Ca(OH)2 (Calcium Hydroxide, otherwise known as limewater and is used for neutralising acidic fields (Soil)because it is an alkali)

______________
Limewater (Calcium Hydroxide) turns cloudy when Carbon dioxide is present.
Ca(OH)2 (Calcium Hydroxide)+ CO2 ---> CaCO3 (Limestone)+ H2O
The limestone that is formed is what turns the limewater milky/cloudy.
I think you can get a A*/A from just knowing the Word Equation as the marks are either for the Word Equation shown or Symbol Equation, but I find Word Equation easier.

For the first two reactions I think any metal in Group I will work for it (Just substitute the metal in for Calcium) But the other metals Symbol equation will be different in some equations so thats why the Word Equation is easier to remember.
I found January paper pretty easy questions though, as always I was rushed for time...got an A* by 2 marks though :cool:

If I was to bet, i'd bet Metal Extraction would come up since it is a massive unit...

Any advice on time management, what do you guys do? And good luck on exam...

give yourself about 1 minute for a 1 mark question, 2 for 2 marks ect. then go through the paper and check loads of times it really helped me

Reply 53

i9l7f

Original post by MajorRisk

Any advice on time management, what do you guys do? And good luck on exam...

I usually work around a minute per mark too…and don't get too hung up on one question. I did in biology and it made me mess up :frown:

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Reply 54

Firuza1029

hiyya, i'm trying to get as much revision done as possible and i've come across this table, do we need to memorise it?
it mentions 'type of steel, Iron alloyed with, Properties and Typical use'

Reply 55

Mrkingpenguin

18

Original post by Firuza1029

hiyya, i'm trying to get as much revision done as possible and i've come across this table, do we need to memorise it?
it mentions 'type of steel, Iron alloyed with, Properties and Typical use'

Yep

Reply 56

hannnahlucy

Dose anyone know if anything that's 'likely' to come up? :smile:

Reply 57

Crystallouise99

How's everyone feeling at the moment ?? I'm kinda not prepared !!! :s-smilie:

I kinda know some stuff but I dunno any of the how science works questions

BETTER GET REVISING :tongue:

Reply 58

Ame1

I'm really worried! I've revised as much as I can but am so scared!

Reply 59

i9l7f

Original post by Ame1

I'm really worried! I've revised as much as I can but am so scared!

Me too! I'm going to try and get some last minute revision in tomorrow before the exam and keep calm (somehow) haha. Good luck!

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AQA GCSE Chemistry Exam Unit 1 (C1) 15th June 2012 (New Spec.)

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