Exam (elaborations)
OCR A Level Chemistry exam with 100% complete guide
- Course
- Institution
OCR A Level Chemistry exam with 100% complete guide
[Show more]
Content preview
OCR A Level Chemistry exam with 100%complete guide
acid - ANS A species that is a proton donor.
activation energy - ANS The minimum amount of kinetic energy that particles need to have
in order to react when they collide
addition polymer - ANS A very long molecular chain formed by repeated addition reactions
of many unsaturated alkene molecules (monomers).
addition polymerisation - ANS The process in which unsaturated alkene molecules
(monomers) add on to a growing polymer chain one at a time to form a very long saturated
molecular chain (the addition polymer).
addition reaction - ANS A reaction in which a reactant is added to an unsaturated molecule
to make a saturated molecule.
adsorption - ANS The process that occurs when a gas, liquid or solute is held to the surface
of a solid or, more rarely, a liquid.
alicyclic hydrocarbon - ANS A hydrocarbon with carbon atoms joined together in a ring
structure.
aliphatic hydrocarbon - ANS A hydrocarbon with carbon atoms joined together in straight or
branched chains.
alkali - ANS A type of base that dissolves in water forming hydroxide ions, OH- (aq) ions.
alkanes - ANS The homologous series with the general formula: CnH2n+2.
alkyl group - ANS An alkane with a hydrogen atom removed, e.g. CH3, C2H5; alkyl groups
are often shown as 'R'.
amount of substance - ANS The quantity whose unit of the mole. Chemists use 'amount of
substance' as a means of counting atoms.
anhydrous - ANS A substance that contains no water molecules.
anion - ANS A negatively charged ion.
, atom economy - ANS atom economy = molecular mass of the desired product ×100 sum of
molecular masses of all products
atomic orbital - ANS A region within an atom that can hold up to two electrons, with
opposite spins.
atomic (proton) number - ANS The number of protons in the nucleus of an atom
acid - ANS A species that is a proton donor.
activation energy - ANS The minimum energy required to start a reaction by the breaking of
bonds.
addition polymer - ANS A very long molecular chain formed by repeated addition reactions
of many unsaturated alkene molecules (monomers).
addition polymerisation - ANS The process in which unsaturated alkene molecules
(monomers) add on to a growing polymer chain one at a time to form a very long saturated
molecular chain (the addition polymer).
addition reaction - ANS A reaction in which a reactant is added to an unsaturated molecule
to make a saturated molecule.
adsorption - ANS The process that occurs when a gas, liquid or solute is held to the surface
of a solid or, more rarely, a liquid.
alicyclic hydrocarbon - ANS A hydrocarbon with carbon atoms joined together in a ring
structure.
aliphatic hydrocarbon - ANS A hydrocarbon with carbon atoms joined together in straight or
branched chains.
alkali - ANS A type of base that dissolves in water forming hydroxide ions, OH- (aq) ions.
alkanes - ANS The homologous series with the general formula: CnH2n+2.
alkyl group - ANS An alkane with a hydrogen atom removed, e.g. CH3, C2H5; alkyl groups
are often shown as 'R'.
amount of substance - ANS The quantity whose unit of the mole. Chemists use 'amount of
substance' as a means of counting atoms.
anhydrous - ANS A substance that contains no water molecules.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller excellentrevision964. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now