AQA GCSE COMBINED SCIENCE: TRILOGY
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ To find the exact volumes of acid and alkali that react with each other.
Answer: What are titrations used for?
◍ chromatography.
Answer: the process whereby small amounts of dissolved substances are
separated by running a solvent along a material such as absorbent paper
◍ The reactant that get used up first in a reaction is called the limiting reactant.
Answer: What is the Limiting Reactant?
◍ Graphite has a giant covalent molecular structure it contains many layers of
carbon atoms each carbon atom covalently bonded to three other carbon
atoms, the layers are held by weak forces between them.
Answer: Describe the structure of Graphite
◍ Impure substances will: 2 things.
Answer: 1) lower the melting point and increase the melting range of the
substance - depending on how much of each substance there is in the
mixture2) increase the boiling point of the substance
◍ He arranged the elements in order of increasing atomic mass, he switched
the order of some elements to the fitted in the patterns of other elements. He
left gaps for undiscovered elements.
Answer: What did Dmitri Mendeleev's periodic table look like?
,◍ What are examples of surface water sources.
Answer: Lakes, rivers, reservoirs
◍ fast reactions examples.
Answer: combustionexplosions
◍ Why are reverse osmosis and distillation impractical for producing large
amounts of water.
Answer: They both use loads of energy, so very expensive
◍ agriculture.
Answer: farm animals produce methane
◍ rate of a chemical reaction definition.
Answer: how fast the reactants are changed into products
◍ Test for Alkenes.
Answer: - Orange Bromine water stays bright orange when added o an
ALKANE.- Orange Bromine water turns into a colourless compound when
added to an ALKENE (decolourised).
◍ the elements in a molecule and the number of atoms of each element.
Answer: What does a chemical formula tell you about a molecule?
◍ Extremely fast reaction, a small flame is produced. Water turns alkaline.
Answer: What is the reaction between potassium (G1) and water
◍ properties of alkenes.
Answer: unsaturatedc=c bond can open to bond to other atomsmuch more
reactive than alkanes
◍ What is a pure substance?.
Answer: A substance where nothing has been added to it, so it's in its natural
state - contains only one compound or element throughout - like water
◍ Graphene is very strong.
Answer: Is graphene strong or weak?
◍ catalytic cracking.
, Answer: -Vaporise hydrocarbon-Pass hydrocarbon vapour over the hot
powdered aluminium oxide, long hydrocarbons come into contact with the
catalyst and they split apart into 2 smaller hydrocarbons
◍ He arranged the elements in order of increasing atomic mass, he saw that
every eighth element reacted in a similar way.
Answer: What did John Newlands periodic table look like?
◍ A substance in which all the atoms are the same.
Answer: What is an element?
◍ What will happen if oxygen is present?.
Answer: The split will relight
◍ What will happen if hydrogen is present?.
Answer: There will be a 'squeaky pop' sound
◍ stationary phase of chromatography - what is the substance in our practical?.
Answer: Is a substance are molecules can't move(usually a solid or a really
thick liquid) In our case it's the paper
◍ What forms Whilst the particles are constantly moving between the mobile
and stationary phases in chromatography?.
Answer: An equilibrium
◍ What are industrial systems.
Answer: Factories that make and use chemicals
◍ that they are tiny spheres that cannot be divided.
Answer: What were the early ideas of the structure of atoms?
◍ Hydrogen + oxygen -> water.
Answer: What is the word equation for the overall reaction of hydrogen fuel
cars
◍ What trapped the carbon from the plants from getting back out into the
atmosphere.
Answer: Sedimentary rock, oil and gas
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ To find the exact volumes of acid and alkali that react with each other.
Answer: What are titrations used for?
◍ chromatography.
Answer: the process whereby small amounts of dissolved substances are
separated by running a solvent along a material such as absorbent paper
◍ The reactant that get used up first in a reaction is called the limiting reactant.
Answer: What is the Limiting Reactant?
◍ Graphite has a giant covalent molecular structure it contains many layers of
carbon atoms each carbon atom covalently bonded to three other carbon
atoms, the layers are held by weak forces between them.
Answer: Describe the structure of Graphite
◍ Impure substances will: 2 things.
Answer: 1) lower the melting point and increase the melting range of the
substance - depending on how much of each substance there is in the
mixture2) increase the boiling point of the substance
◍ He arranged the elements in order of increasing atomic mass, he switched
the order of some elements to the fitted in the patterns of other elements. He
left gaps for undiscovered elements.
Answer: What did Dmitri Mendeleev's periodic table look like?
,◍ What are examples of surface water sources.
Answer: Lakes, rivers, reservoirs
◍ fast reactions examples.
Answer: combustionexplosions
◍ Why are reverse osmosis and distillation impractical for producing large
amounts of water.
Answer: They both use loads of energy, so very expensive
◍ agriculture.
Answer: farm animals produce methane
◍ rate of a chemical reaction definition.
Answer: how fast the reactants are changed into products
◍ Test for Alkenes.
Answer: - Orange Bromine water stays bright orange when added o an
ALKANE.- Orange Bromine water turns into a colourless compound when
added to an ALKENE (decolourised).
◍ the elements in a molecule and the number of atoms of each element.
Answer: What does a chemical formula tell you about a molecule?
◍ Extremely fast reaction, a small flame is produced. Water turns alkaline.
Answer: What is the reaction between potassium (G1) and water
◍ properties of alkenes.
Answer: unsaturatedc=c bond can open to bond to other atomsmuch more
reactive than alkanes
◍ What is a pure substance?.
Answer: A substance where nothing has been added to it, so it's in its natural
state - contains only one compound or element throughout - like water
◍ Graphene is very strong.
Answer: Is graphene strong or weak?
◍ catalytic cracking.
, Answer: -Vaporise hydrocarbon-Pass hydrocarbon vapour over the hot
powdered aluminium oxide, long hydrocarbons come into contact with the
catalyst and they split apart into 2 smaller hydrocarbons
◍ He arranged the elements in order of increasing atomic mass, he saw that
every eighth element reacted in a similar way.
Answer: What did John Newlands periodic table look like?
◍ A substance in which all the atoms are the same.
Answer: What is an element?
◍ What will happen if oxygen is present?.
Answer: The split will relight
◍ What will happen if hydrogen is present?.
Answer: There will be a 'squeaky pop' sound
◍ stationary phase of chromatography - what is the substance in our practical?.
Answer: Is a substance are molecules can't move(usually a solid or a really
thick liquid) In our case it's the paper
◍ What forms Whilst the particles are constantly moving between the mobile
and stationary phases in chromatography?.
Answer: An equilibrium
◍ What are industrial systems.
Answer: Factories that make and use chemicals
◍ that they are tiny spheres that cannot be divided.
Answer: What were the early ideas of the structure of atoms?
◍ Hydrogen + oxygen -> water.
Answer: What is the word equation for the overall reaction of hydrogen fuel
cars
◍ What trapped the carbon from the plants from getting back out into the
atmosphere.
Answer: Sedimentary rock, oil and gas
