AQA GCSE COMBINED SCIENCE: TRILOGY
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
FINAL TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ fractions with a low boiling point.
Answer: evaporate easily
◍ effects of pressure increase in a gaseous reaction in equilibrium.
Answer: equilibrium position shifts to the side with the least molecules
◍ formation at anode in electrolysis of an aqueous solution.
Answer: oxygen is produced, unless aqueous solution contains halide ions,
in which case the halogen is produced
◍ catalyst in a biological system.
Answer: enzyme
◍ lots of energy.
Answer: water desalination requires...
◍ exothermic reaction.
Answer: transfers energy to the surroundings, surrounding temperature
increases, reactant energy greater than product energy, positive energy
change, energy released, more heat energy released making bonds than was
taken in to break bonds
◍ symbol for gas.
Answer: g
,◍ safe to drink.
Answer: potable water is...
◍ ammonia.
Answer: NH3, a substance manufactured by the Haber process and used to
make fertilizer and nitric acid.
◍ effect of carbon dioxide.
Answer: global warming
◍ units for volume of products/reactants.
Answer: cm³
◍ ethane.
Answer: C₂H₆
◍ resource.
Answer: a stock or supply of money, materials, staff, and other assets that
can be drawn on by a person or organization in order to function effectively.
◍ how metals less reactive than carbon can be extracted.
Answer: reduction with carbon
◍ what happens in a chemical reaction.
Answer: bonds in reactants are broken (energy absorbed), new bonds are
made in the products (energy released)
◍ steeper tangent shows the RoRxn is.
Answer: faster
◍ stages usually assessed during an LCA.
Answer: extraction and purification of raw materials; manufacture and
packaging; use/operation during product's lifetime; disposal at then end of
the product's useful life
◍ combustion.
Answer: a rapid reaction between a substance and oxygen that releases heat
and light energy
,◍ greenhouse effect (1).
Answer: EM radiation at most wavelengths for the Sun passes through the
atmosphere
◍ lithium, Li+.
Answer: flame colour = crimson
◍ solutions consist of 2 things:.
Answer: solute and solvent
◍ formula for calculating RoRxn using a graph (where time is on the y-axis).
Answer: RoRxn = ∆x ÷∆y
◍ green.
Answer: flame tests: Ba
◍ crude oil.
Answer: petroleum as it comes out of the ground and before it has been
refined or processed into useful products; A naturally occurring mixture of
many hydrocarbons.
◍ addition polymerisation.
Answer: The joining of unsaturated monomers by a series of addition
reactions.
◍ paraffin waxes are used for.
Answer: candles and waterproofing
◍ aluminium ore.
Answer: bauxite
◍ pipette.
Answer: a slender tube attached to or incorporating a bulb, for transferring
or measuring out small quantities of liquid.
◍ unsaturated hydrocarbon.
Answer: A hydrocarbon containing double and/or triple carbon-carbon
bonds.
, ◍ recycle.
Answer: to convert (waste) into reusable material.
◍ how an LCA can be used.
Answer: to compare and evaluate the impact of the use of different materials
for the same purpose, and the use of the same material for different jobs
◍ negative electrode.
Answer: cathode
◍ fractional distillation.
Answer: evaporating liquids with different boiling points
◍ peer review.
Answer: evaluation of scientific, academic, or professional work by others
working in the same field.
◍ effects of pressure decrease in a gaseous reaction in equilibrium.
Answer: equilibrium position shifts to the side with the most molecules
◍ how carbon footprint works.
Answer: calculates all the greenhouse gases involved and measures them in
units of carbon dioxide
◍ metal + oxygen reaction type.
Answer: oxidation
◍ each fraction of crude oil contains.
Answer: similar alkanes
◍ how oxygen levels in the atmosphere increased.
Answer: 2.7bn years ago, algae evolved, followed by other plants, which
photosynthesise, putting oxygen into the atmosphere to a point at which
animals were able to evolve
◍ soot is.
Answer: carcinogenic
◍ chemical equation example.
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
FINAL TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ fractions with a low boiling point.
Answer: evaporate easily
◍ effects of pressure increase in a gaseous reaction in equilibrium.
Answer: equilibrium position shifts to the side with the least molecules
◍ formation at anode in electrolysis of an aqueous solution.
Answer: oxygen is produced, unless aqueous solution contains halide ions,
in which case the halogen is produced
◍ catalyst in a biological system.
Answer: enzyme
◍ lots of energy.
Answer: water desalination requires...
◍ exothermic reaction.
Answer: transfers energy to the surroundings, surrounding temperature
increases, reactant energy greater than product energy, positive energy
change, energy released, more heat energy released making bonds than was
taken in to break bonds
◍ symbol for gas.
Answer: g
,◍ safe to drink.
Answer: potable water is...
◍ ammonia.
Answer: NH3, a substance manufactured by the Haber process and used to
make fertilizer and nitric acid.
◍ effect of carbon dioxide.
Answer: global warming
◍ units for volume of products/reactants.
Answer: cm³
◍ ethane.
Answer: C₂H₆
◍ resource.
Answer: a stock or supply of money, materials, staff, and other assets that
can be drawn on by a person or organization in order to function effectively.
◍ how metals less reactive than carbon can be extracted.
Answer: reduction with carbon
◍ what happens in a chemical reaction.
Answer: bonds in reactants are broken (energy absorbed), new bonds are
made in the products (energy released)
◍ steeper tangent shows the RoRxn is.
Answer: faster
◍ stages usually assessed during an LCA.
Answer: extraction and purification of raw materials; manufacture and
packaging; use/operation during product's lifetime; disposal at then end of
the product's useful life
◍ combustion.
Answer: a rapid reaction between a substance and oxygen that releases heat
and light energy
,◍ greenhouse effect (1).
Answer: EM radiation at most wavelengths for the Sun passes through the
atmosphere
◍ lithium, Li+.
Answer: flame colour = crimson
◍ solutions consist of 2 things:.
Answer: solute and solvent
◍ formula for calculating RoRxn using a graph (where time is on the y-axis).
Answer: RoRxn = ∆x ÷∆y
◍ green.
Answer: flame tests: Ba
◍ crude oil.
Answer: petroleum as it comes out of the ground and before it has been
refined or processed into useful products; A naturally occurring mixture of
many hydrocarbons.
◍ addition polymerisation.
Answer: The joining of unsaturated monomers by a series of addition
reactions.
◍ paraffin waxes are used for.
Answer: candles and waterproofing
◍ aluminium ore.
Answer: bauxite
◍ pipette.
Answer: a slender tube attached to or incorporating a bulb, for transferring
or measuring out small quantities of liquid.
◍ unsaturated hydrocarbon.
Answer: A hydrocarbon containing double and/or triple carbon-carbon
bonds.
, ◍ recycle.
Answer: to convert (waste) into reusable material.
◍ how an LCA can be used.
Answer: to compare and evaluate the impact of the use of different materials
for the same purpose, and the use of the same material for different jobs
◍ negative electrode.
Answer: cathode
◍ fractional distillation.
Answer: evaporating liquids with different boiling points
◍ peer review.
Answer: evaluation of scientific, academic, or professional work by others
working in the same field.
◍ effects of pressure decrease in a gaseous reaction in equilibrium.
Answer: equilibrium position shifts to the side with the most molecules
◍ how carbon footprint works.
Answer: calculates all the greenhouse gases involved and measures them in
units of carbon dioxide
◍ metal + oxygen reaction type.
Answer: oxidation
◍ each fraction of crude oil contains.
Answer: similar alkanes
◍ how oxygen levels in the atmosphere increased.
Answer: 2.7bn years ago, algae evolved, followed by other plants, which
photosynthesise, putting oxygen into the atmosphere to a point at which
animals were able to evolve
◍ soot is.
Answer: carcinogenic
◍ chemical equation example.
