AQA A Level Chemistry Paper 1 Exam with Questions and Answers – 100%
Solved
Acceleration (TOF) - ✔✔✔-positive ions accelerated using electric field so they all have the
same kinetic energy
Activation energy - ✔✔✔-the minimum energy colliding particles must have in order to react
Adsorption too weak - ✔✔✔-Not many molecules adsorbed so catalyst has little effect
Analysis (TOF) - ✔✔✔--computer uses data to produce mass spectrum which shows mass m /
charge z ratio
-mr or ar is furthest right peak (small peaks larger than mr are due to isotopes)
-may be large peaks at lower mr due to fragmentation
Atom economy - ✔✔✔-(Molecular mass of desired products/ Molecular mass of all products) x
100
Bidentate - ✔✔✔-Forms two coordinate bonds per ligand
Br- with H2SO4 - ✔✔✔-Produces SO2
S goes from +6 to +4
Test for SO2 if potassium dichromate goes from orange to green
Bronstead-Lowry base - ✔✔✔-proton acceptor
Bronsted-Lowry acid - ✔✔✔-proton donor
Buffer - ✔✔✔-A solution that resists changes in pH when small amounts of acid or base are
added.
, AQA A Level Chemistry Paper 1 Exam with Questions and Answers – 100%
Solved
Cl- with H2SO4 - ✔✔✔-Produces NaHSO4 and HCl
Not redox as in change in oxidation state because Cl- not strong enough reducing agent
Test for HCl with ammonia solution, white cloud produced
Complex - ✔✔✔-Central metal ion surrounded by ligands
Coordinate bonding - ✔✔✔-Shared pair of electrons in the covalent bond come from only one
of the bonding atoms
coordination number - ✔✔✔-The number of coordinate bonds attached to the central metal
ion
Detection (TOF) - ✔✔✔-positive ions hit negatively charged plate and gain an electron which
forms a current, the larger the current the higher the abundance
Dip in ionisation energy groups 2-3 - ✔✔✔-Electrons take up higher orbital (s to p) which makes
ionisation energy lower as higher orbitals have higher energy
Dip in ionisation energy groups 5-6 - ✔✔✔-Electron- electron repulsion in orbital makes
electron easier to lose
dynamic equilibrium - ✔✔✔-Forward and backward reactions take place at same rate so
concentrations of products and reactants remain constant
Only reached in closed system
Effect of changing pressure on Kp - ✔✔✔-No effect on Kp as partial pressures of top and bottom
change to keep Kp same
Solved
Acceleration (TOF) - ✔✔✔-positive ions accelerated using electric field so they all have the
same kinetic energy
Activation energy - ✔✔✔-the minimum energy colliding particles must have in order to react
Adsorption too weak - ✔✔✔-Not many molecules adsorbed so catalyst has little effect
Analysis (TOF) - ✔✔✔--computer uses data to produce mass spectrum which shows mass m /
charge z ratio
-mr or ar is furthest right peak (small peaks larger than mr are due to isotopes)
-may be large peaks at lower mr due to fragmentation
Atom economy - ✔✔✔-(Molecular mass of desired products/ Molecular mass of all products) x
100
Bidentate - ✔✔✔-Forms two coordinate bonds per ligand
Br- with H2SO4 - ✔✔✔-Produces SO2
S goes from +6 to +4
Test for SO2 if potassium dichromate goes from orange to green
Bronstead-Lowry base - ✔✔✔-proton acceptor
Bronsted-Lowry acid - ✔✔✔-proton donor
Buffer - ✔✔✔-A solution that resists changes in pH when small amounts of acid or base are
added.
, AQA A Level Chemistry Paper 1 Exam with Questions and Answers – 100%
Solved
Cl- with H2SO4 - ✔✔✔-Produces NaHSO4 and HCl
Not redox as in change in oxidation state because Cl- not strong enough reducing agent
Test for HCl with ammonia solution, white cloud produced
Complex - ✔✔✔-Central metal ion surrounded by ligands
Coordinate bonding - ✔✔✔-Shared pair of electrons in the covalent bond come from only one
of the bonding atoms
coordination number - ✔✔✔-The number of coordinate bonds attached to the central metal
ion
Detection (TOF) - ✔✔✔-positive ions hit negatively charged plate and gain an electron which
forms a current, the larger the current the higher the abundance
Dip in ionisation energy groups 2-3 - ✔✔✔-Electrons take up higher orbital (s to p) which makes
ionisation energy lower as higher orbitals have higher energy
Dip in ionisation energy groups 5-6 - ✔✔✔-Electron- electron repulsion in orbital makes
electron easier to lose
dynamic equilibrium - ✔✔✔-Forward and backward reactions take place at same rate so
concentrations of products and reactants remain constant
Only reached in closed system
Effect of changing pressure on Kp - ✔✔✔-No effect on Kp as partial pressures of top and bottom
change to keep Kp same
