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Chemistry F325 - 22nd January 2013

Hi,
I have made this thread for anyone studying Chemistry f325 and sitting the exam in January 2013. Most people sitting this exam are resitting or sitting it for the first time. I am regularly going to post notes and I would like everyone to contribute with their own resources as well.
Good luck with studying guys

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Reply 1

otrivine

Original post by Kangaroo_rampage

I am doing this exam too :smile:

i finished my notes should i post them :smile:

and quote me so we can ask questions

Reply 2

Kangaroo_rampage

Original post by otrivine

I am doing this exam too :smile:

i finished my notes should i post them :smile:

and quote me so we can ask questions

Yeah go ahead and post up your notes.

Reply 3

otrivine

Original post by Kangaroo_rampage

Yeah go ahead and post up your notes.

ill do it tonight :smile:

want to revise a bit on chapter 1 and 2 asking questions :biggrin:

Reply 4

Kangaroo_rampage

Visit this site for all the old spec past papers: http://www.sci2.co.uk/chemistry.html

Reply 5

Optical

My sixth form said that it was too late to re-do Year 13, so I'm resitting this exam externally. Haven't started any revision, and I fear that I've forgotten everything :frown:

Reply 6

otrivine

Original post by Optical

My sixth form said that it was too late to re-do Year 13, so I'm resitting this exam externally. Haven't started any revision, and I fear that I've forgotten everything :frown:

do you want to revise

Reply 7

otrivine

anyone up for some revision questions

Reply 8

Kangaroo_rampage

Original post by otrivine

anyone up for some revision questions

Yeah, lets get some revision started, I have mocks stating at the end of november

Reply 9

otrivine

Original post by Kangaroo_rampage

Yeah, lets get some revision started, I have mocks stating at the end of november

1) define:acid
2) define:alkali

Reply 10

Kangaroo_rampage

An acid is a species which is a proton donor
An alkali is a base that dissolves in water forming OH- ions

Reply 11

otrivine

Original post by Kangaroo_rampage

An acid is a species which is a proton donor
An alkali is a base that dissolves in water forming OH- ions

correct my turn :smile:

Reply 12

Kangaroo_rampage

Lets get all the How far? How fast? questions done this weekend from the site:

http://www.a-levelchemistry.co.uk/OCR%20Chemistry%20A/OCR%20Chemistry%20A%20home.html

If we have any problems we can ask each other.

Reply 13

Kangaroo_rampage

Original post by otrivine

correct my turn :smile:

Define strong acid and weak acid.
What is the equivalence point?

Reply 14

otrivine

Original post by Kangaroo_rampage

Define strong acid and weak acid.
What is the equivalence point?

STRONG acid where the solution fully dissociates and weak acid is where it partially dissociates

Equivalence point =is where the volume of one solution is the same as the volume of a different solution

Reply 15

Kangaroo_rampage

Original post by otrivine

Correct, full marks!!

How much of this module have you completed so far?
Have you done any of the questions from this site: http://www.a-levelchemistry.co.uk/OCR%20Chemistry%20A/OCR%20Chemistry%20A%20home.html

Reply 16

otrivine

Original post by Kangaroo_rampage

Yes i have :smile:

more question

1) What is buffer solution
2) define:conjugate

Reply 17

Kangaroo_rampage

Original post by otrivine

Yes i have :smile:

more question

1) What is buffer solution
2) define:conjugate

1) A buffer solution is a mixture that will minimise changes in pH on the addition of an acid or base.
2) Something that releases or accepts a proton, i think

Reply 18

otrivine

Original post by Kangaroo_rampage

1) A buffer solution is a mixture that will minimise changes in pH on the addition of an acid or base.
2) Something that releases or accepts a proton, i think

first one is correct
second nearly there its where the H+ differs and is where the species transform into each other by the gain or loss of a proton

my turn :smile:

Reply 19

Kangaroo_rampage