AQA A LEVEL CHEMISTRY QUESTION PAPERS
AND MARKSCHEMES [VERIFIED]
Acid hydrolysis of esters - correct answer - Acid and
alcohol
activation energy - correct answer - The minimum
amount of energy needed to start a chemical reaction
Activation energy - correct answer - the minimum
amount of energy required to start a chemical reaction
addition polymers - correct answer - polymers
madenfrom alkenes in an addition reaction
Alkali - correct answer - a soluble base
Anion - correct answer - A negatively charged ion
atom economy - correct answer - molecular mass of the
desired product/ sum of the molecular masses of all
reactants x100
,autocatalyst - correct answer - Catalyst that is a
reaction product
Base hydrolysis of esters - correct answer - Carboxylate
ion and alcohol
Biofuel - correct answer - Any fuel made from living
organisms or their waste
bond dissociation energy - correct answer - The energy
required to break the bond between two covalently
bonded atoms.
Brosted- lowry Acid - correct answer - proton donor
Brosted- lowry base - correct answer - proton acceptor
buffer - correct answer - A solution that resists changes
in pH when small amounts of acid or base are added.
Carbon neutral - correct answer - No net annual
emissions of carbon dioxide into the atmosphere
, Carboxylic acid + alcohol - correct answer - Ester +
water
Carboxylic acid + carbonates - correct answer - Salt,
carbon dioxide + water
catalyst - correct answer - A substance that increases
the rate of a chemical reaction without being changed by
providing an alternative reaction pathway by lowering
activation energy
Cation - correct answer - A positively charged ion
chain isomer - correct answer - different ways of
arranging a carbon chain
chiral carbon - correct answer - A carbon atom attached
to four different atoms or groups of atoms.
co-ordinate bond - correct answer - a shared pair of
electrons where both electrons are supplied by one atom
co-ordination number - correct answer - Number of lone
pairs bonded to the metal ion
AND MARKSCHEMES [VERIFIED]
Acid hydrolysis of esters - correct answer - Acid and
alcohol
activation energy - correct answer - The minimum
amount of energy needed to start a chemical reaction
Activation energy - correct answer - the minimum
amount of energy required to start a chemical reaction
addition polymers - correct answer - polymers
madenfrom alkenes in an addition reaction
Alkali - correct answer - a soluble base
Anion - correct answer - A negatively charged ion
atom economy - correct answer - molecular mass of the
desired product/ sum of the molecular masses of all
reactants x100
,autocatalyst - correct answer - Catalyst that is a
reaction product
Base hydrolysis of esters - correct answer - Carboxylate
ion and alcohol
Biofuel - correct answer - Any fuel made from living
organisms or their waste
bond dissociation energy - correct answer - The energy
required to break the bond between two covalently
bonded atoms.
Brosted- lowry Acid - correct answer - proton donor
Brosted- lowry base - correct answer - proton acceptor
buffer - correct answer - A solution that resists changes
in pH when small amounts of acid or base are added.
Carbon neutral - correct answer - No net annual
emissions of carbon dioxide into the atmosphere
, Carboxylic acid + alcohol - correct answer - Ester +
water
Carboxylic acid + carbonates - correct answer - Salt,
carbon dioxide + water
catalyst - correct answer - A substance that increases
the rate of a chemical reaction without being changed by
providing an alternative reaction pathway by lowering
activation energy
Cation - correct answer - A positively charged ion
chain isomer - correct answer - different ways of
arranging a carbon chain
chiral carbon - correct answer - A carbon atom attached
to four different atoms or groups of atoms.
co-ordinate bond - correct answer - a shared pair of
electrons where both electrons are supplied by one atom
co-ordination number - correct answer - Number of lone
pairs bonded to the metal ion
