OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 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: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012sure(Original post by dee11)
Hey! are we all askng questions to help with revision here?
Got any?
Oh and answer mine while you're at it
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012Where are you getting all these questions from?(Original post by darkxangel)
correct.
Suggest uses for polymer waste and how we can get rid of it (6)
How can waste hydrogen be used (in what process)? (2)
Are they PP questions? -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012http://www.a-levelchemistry.co.uk/OC...resources.html
Scroll down to find the past paper and MS for June/Jan 2011
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012(Original post by Lindizya)
has anyone got a link to the specimen paper?
http://www.ocr.org.uk/download/asses..._unit_f322.pdf
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012whats everything you know about polymers?(Original post by zainahmed)
yo yo yo let the revision begin throw some questions at me my chemists all stars!!!!!!!!!!! g star 4 lyf -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012Haber process, what else?(Original post by darkxangel)
correct.
Suggest uses for polymer waste and how we can get rid of it (6)
How can waste hydrogen be used (in what process)? (2) -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012my brain(Original post by splendidsun)
Where are you getting all these questions from?
Are they PP questions?
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012- adsorption of reactants(Original post by darkxangel)
How does a catalytic converter work? (4)
- bonds weaken
-desorption of products
the formula
NO+CO GIVE 1/2N2+CO2 -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012Margarine production(Original post by LifeIsGood)
Haber process, what else? -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012polymers are made up of monomers which is an alkene(Original post by splendidsun)
whats everything you know about polymers?
polymer waste is a problem lack of space in land fills etc
we can recycle them which involves sorting and reclamation
scientists are begining to develop biodegradeable plastics
we should recycle polymenrs
burning old polymers can also be a good fuel cource but this produce co2
polmer waster can also be used in feedstock recycling -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012Hydrogenation of margerine to be exact(Original post by splendidsun)
Margarine production
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012Biofuels are fuels such as ethanol, methanol? which i think burn more cleanly so have environmental benefits and are also are looking to replace the finite sources we have now
adv of fermentation; low temperatures and pressures used so less energy,
disad of fermenation; not 100% atom economy, only 14% conversion
adv of hydration of ethene; 100% atom eeconommy achieved
disadv of hydration of ethene; high temperatures and pressure used, which could be a health risk for workes
anything ive missed out??
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012State two factors that affect the contibution of a greenhouse gas to global warming?(Original post by zainahmed)
yo yo yo let the revision begin throw some questions at me my chemists all stars!!!!!!!!!!! g star 4 lyf -
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012nooope(Original post by dee11)
Biofuels are fuels such as ethanol, methanol? which i think burn more cleanly so have environmental benefits and are also are looking to replace the finite sources we have now
adv of fermentation; low temperatures and pressures used so less energy,
disad of fermenation; not 100% atom economy, only 14% conversion
adv of hydration of ethene; 100% atom eeconommy achieved
disadv of hydration of ethene; high temperatures and pressure used, which could be a health risk for workes
anything ive missed out??
but i think the general definition for biofuels is fuels that have been made from recently living materials like plants
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Re: OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012the amount of radiation it can absord i think its infared radiation? correct me if am wrong(Original post by dee11)
State two factors that affect the contibution of a greenhouse gas to global warming?
and its relative concentration in the atmosphere
the amount a gas has and effect is measured by its GWP global warming potential score
