AS OCR chemistry B (SALTERS) F331 on the 15th may 2012
Chemistry exam discussion - share revision tips in preparation for GCSE, A Level and other chemistry exams and discuss how they went afterwards.
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012revise(Original post by amber109)
got half an hour left to revise, what should do?.... -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012What?(Original post by bertiejess)
am just doing some old questions and drawing an enthalpy diagram has come up as a question, is this no longer in F331 because this is a resit and I haven't revised F332!! -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012yeah it does(Original post by randomfatguy)
Does this exam start at 1:30? please say yes
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Read posts # 10 and 11 here(Original post by dirrane)
Can someone explain to me what i need to know for periodicity and group 2 trends? -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Thank you, you just saved my life(Original post by xxZazxx)
basically just the lime water going cloudy in the presence of CO2, so u know, heat the metal in a test tube over a bunsen burner, collect the gas given off in a gas syringe and feed the other end of the syringe into a test tube of lime water. refer to controls like same amount of metal, same volume of limewater, repeats etc. the longer it takes for the lime water to go cloudy the more thermally stable the metal, thermal stability increases down the group. that should be enough to get you the full marks
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012my teacher gave us like a list of polar bonds and ones that form permanent dipole- permanent dipole bonds, but i cant find the sheet. can anyone tell me what bonds they are?
i know halogen- pretty much anything
c-o
any others? -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Yes(Original post by randomfatguy)
Does this exam start at 1:30? please say yes
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Group 2 trends -(Original post by dirrane)
Can someone explain to me what i need to know for periodicity and group 2 trends?
Carbonate solubility decreases down group
Hydroxide solubility increases down group
Thermal stability of carbonates increases down group
Periodicity - melting point increases and then after Group 4 decreases
This trend is repeated through the periods
Hope this helps a bit
Last edited by bertiejess; 15-05-2012 at 11:32. -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012I think youre in the wrong thread. This is for OCR SALters.. I think you do Chem A which is F321 and this is F331(Original post by vicky8761)
my teacher gave us like a list of polar bonds and ones that form permanent dipole- permanent dipole bonds, but i cant find the sheet. can anyone tell me what bonds they are?
i know halogen- pretty much anything
c-o
any others? -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012With chem, you really cannot predict anything at all. You just have to learn and practisr the spec compared to something like bio, where you can actuallly predicts what might come up.(Original post by randomfatguy)
Does anyone know what topics from F331 came up in Jan exam?
If so could someone make a short list of them, this would narrow down what they could put in our exam today. I think it would help
Godd luck today
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012no i definitely do salters and im sitting f331(Original post by ManPowa)
I think youre in the wrong thread. This is for OCR SALters.. I think you do Chem A which is F321 and this is F331 -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Yes that stuff is in either F332 or you're on the wrong thread for your exam sylabus, will not find anything on that in F331(Original post by vicky8761)
my teacher gave us like a list of polar bonds and ones that form permanent dipole- permanent dipole bonds, but i cant find the sheet. can anyone tell me what bonds they are?
i know halogen- pretty much anything
c-o
any others?
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012That was Beautifully put together mate(Original post by bertiejess)
Group 2 trends -
Carbonate solubility decreases down group
Hydroxide solubility increases down group
Thermal stability of carbonates increases down group
Periodicity - melting point increases and then after Group 4 decreases
This trend is repeated through the periods
Hope this helps a bit
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012Okay, but whatever you said about bonding is not in the F331 spec.(Original post by vicky8761)
no i definitely do salters and im sitting f331 -
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Re: AS OCR chemistry B (SALTERS) F331 on the 15th may 2012But polarising bonds etc. is all to do with mechanisms found in F332, so you have nothing to worry about.(Original post by vicky8761)
no i definitely do salters and im sitting f331
