2026 AQA A LEVEL CHEMISTRY PAPER 2
COMPREHENSIVE TEST BANK COMPLETE
QUESTIONS AND ANSWERS PRACTICE
SOLUTION VERIFIED
◉ spectator ion. Answer: ion which does not take part in a reaction
◉ ionic lattice. Answer: ionic solid formed with the ions held in a
three-dimensional framework
◉ coordinate bond. Answer: a bond containing a shared pair of
electrons with both electrons supplied by one atom
◉ allotropes. Answer: different forms of the same element in the same
physical state (diamond and graphite)
◉ electronegativity. Answer: the power of an atom to attract the pair
of electrons in a covalent bond
◉ induced dipole. Answer: a temporary dipole caused by electrons
being more distributed to one side of an atom than the other and
another molecule approaching this side will have its electrons repelled
, ◉ enthalpy change. Answer: heat energy change at constant pressure
◉ activation energy. Answer: minimum amount of energy needed for
reacting particles to successfully collide
◉ standard enthalpy value. Answer: the delta H values for enthalpy
changes of specific reactions measured under standard conditions
◉ conservation of energy. Answer: law stating energy cannot be
created or destroyed, just converted from one form to another
◉ Hess' Law. Answer: law stating the enthalpy change for a chemical
reaction is independent of the route taken and depends only on the
initial and final states
◉ mean bond enthalpy. Answer: measure of energy required to break
one mole of a covalent bond measured in the gaseous state averaged
across many compounds containing the bond
◉ dynamic equilibrium. Answer: where you have a steady state
because the rates of the forward reaction and reverse reaction are the
same
◉ rate of reaction. Answer: change in concentration of a reactant or
product in a given period of time
COMPREHENSIVE TEST BANK COMPLETE
QUESTIONS AND ANSWERS PRACTICE
SOLUTION VERIFIED
◉ spectator ion. Answer: ion which does not take part in a reaction
◉ ionic lattice. Answer: ionic solid formed with the ions held in a
three-dimensional framework
◉ coordinate bond. Answer: a bond containing a shared pair of
electrons with both electrons supplied by one atom
◉ allotropes. Answer: different forms of the same element in the same
physical state (diamond and graphite)
◉ electronegativity. Answer: the power of an atom to attract the pair
of electrons in a covalent bond
◉ induced dipole. Answer: a temporary dipole caused by electrons
being more distributed to one side of an atom than the other and
another molecule approaching this side will have its electrons repelled
, ◉ enthalpy change. Answer: heat energy change at constant pressure
◉ activation energy. Answer: minimum amount of energy needed for
reacting particles to successfully collide
◉ standard enthalpy value. Answer: the delta H values for enthalpy
changes of specific reactions measured under standard conditions
◉ conservation of energy. Answer: law stating energy cannot be
created or destroyed, just converted from one form to another
◉ Hess' Law. Answer: law stating the enthalpy change for a chemical
reaction is independent of the route taken and depends only on the
initial and final states
◉ mean bond enthalpy. Answer: measure of energy required to break
one mole of a covalent bond measured in the gaseous state averaged
across many compounds containing the bond
◉ dynamic equilibrium. Answer: where you have a steady state
because the rates of the forward reaction and reverse reaction are the
same
◉ rate of reaction. Answer: change in concentration of a reactant or
product in a given period of time
