AQA GCSE COMBINED SCIENCE: TRILOGY
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ State symbols show the physical state of the substance solid (s), liquid (l),
gas (g), or dissolved in water (aq).
Answer: What are state symbols?
◍ Metals can be bent and shaped because the layers of atoms are able to slide
over each other.
Answer: Why can metals be bent and shaped?
◍ Ionic compounds are held together by strong electrostatic forces.
Answer: What are ionic compounds held together by?
◍ Graphene is a single layer of graphite and it is one atom thick.
Answer: Describe the structure of graphene
◍ exothermic and endothermic reversible reactions.
Answer: if endothermic in one direction, exothermic in otherenergy
transferred from surroundings = energy transferred to surroundings
◍ The amount of time the molecules spend in each phase depends on:.
Answer: 1) how soluble the molecules are in the solvent2) how attracted
they are to the paper
◍ They slightly break down to release H+ ions.
Answer: What happens to weak acids in water?
,◍ Graphene is a good conductor of electricity.
Answer: Is graphene a good or bad conductor of electricity?
◍ A substance that has any elements chemically joined.
Answer: What is a molecule?
◍ alkanes are saturated.
Answer: each carbon bonds to four other atoms
◍ They are hard, strong and have a high density and melting point, are good
conductors and can be used as catalysts.
Answer: Name some properties of transition elements
◍ Crude Oil.
Answer: -Crude oil is a fossil fuel- It is formed from remains of plats and
animals mainly plankton that dies million years ago and were buried in
mud.- Remains turn to oil over millions of years with high temp and
pressure - drilled from rocks.- Non-renewable fuel- Finite resource -
Mixture of lots of different hydrocarbons
◍ Graphite is a good conductor heat and electricity because when the carbon
atoms bond together each carbon atom has an electron that is not in a
covalent bond, these delocalised electrons can move and they can conduct
heat and electricity.
Answer: Why is graphite a good conductor of heat and electricity?
◍ Acids that partially ionise in aqueous solutions.
Answer: What are weak acids?
◍ volatility.
Answer: The tendency of a liquid to turn into a gas.
◍ Why do we need to have an alkene as a product of cracking.
Answer: There aren't enough hydrogens left to balance the equation and be
saturated (have all single bonds) so one of our products has to have a double
bond to hydrogen - which is what makes it an alkene
◍ An element at the top has less distance between the nucleus and the outer
, energy level so it gains electrons easier.
Answer: Why is it harder for an element at the bottom of the group to gain
an electron that an element at the top of the group?
◍ No.
Answer: Can diamond conduct electricity?
◍ changes to concentration.
Answer: change concentration = no more equilibriumincrease conc. of
reactants = makes more productsdecrease conc. of products = less
reactantsetc
◍ factors affecting rate of reaction.
Answer: 1. temperatureparticles have more energy, collide more
frequently2. concentration or pressuremore particles in an area = more
frequent collisions3. surface areasmaller pieces = more area for collisions to
happen on
◍ greenhouse gases.
Answer: CO2, methane, water vapoursinsulate earth as they trap infrared
radiation (sun) in the atmosphere
◍ By looking at it's equation, weak acid equations are reversible.
Answer: How can we tell if an acid is a weak acid?
◍ flammability.
Answer: How easily a substance will burn.
◍ They have a higher melting and boiling point as you move down the
column.
Answer: Describe the correlation of the melting and boiling point of a group
7 element and it's location in the table
◍ What is the test for carbon dioxide?.
Answer: Making a solution of calcium hydroxide in water (called limewater)
and bubbling gas through it into the test tube - forming calcium carbonate
and water
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ State symbols show the physical state of the substance solid (s), liquid (l),
gas (g), or dissolved in water (aq).
Answer: What are state symbols?
◍ Metals can be bent and shaped because the layers of atoms are able to slide
over each other.
Answer: Why can metals be bent and shaped?
◍ Ionic compounds are held together by strong electrostatic forces.
Answer: What are ionic compounds held together by?
◍ Graphene is a single layer of graphite and it is one atom thick.
Answer: Describe the structure of graphene
◍ exothermic and endothermic reversible reactions.
Answer: if endothermic in one direction, exothermic in otherenergy
transferred from surroundings = energy transferred to surroundings
◍ The amount of time the molecules spend in each phase depends on:.
Answer: 1) how soluble the molecules are in the solvent2) how attracted
they are to the paper
◍ They slightly break down to release H+ ions.
Answer: What happens to weak acids in water?
,◍ Graphene is a good conductor of electricity.
Answer: Is graphene a good or bad conductor of electricity?
◍ A substance that has any elements chemically joined.
Answer: What is a molecule?
◍ alkanes are saturated.
Answer: each carbon bonds to four other atoms
◍ They are hard, strong and have a high density and melting point, are good
conductors and can be used as catalysts.
Answer: Name some properties of transition elements
◍ Crude Oil.
Answer: -Crude oil is a fossil fuel- It is formed from remains of plats and
animals mainly plankton that dies million years ago and were buried in
mud.- Remains turn to oil over millions of years with high temp and
pressure - drilled from rocks.- Non-renewable fuel- Finite resource -
Mixture of lots of different hydrocarbons
◍ Graphite is a good conductor heat and electricity because when the carbon
atoms bond together each carbon atom has an electron that is not in a
covalent bond, these delocalised electrons can move and they can conduct
heat and electricity.
Answer: Why is graphite a good conductor of heat and electricity?
◍ Acids that partially ionise in aqueous solutions.
Answer: What are weak acids?
◍ volatility.
Answer: The tendency of a liquid to turn into a gas.
◍ Why do we need to have an alkene as a product of cracking.
Answer: There aren't enough hydrogens left to balance the equation and be
saturated (have all single bonds) so one of our products has to have a double
bond to hydrogen - which is what makes it an alkene
◍ An element at the top has less distance between the nucleus and the outer
, energy level so it gains electrons easier.
Answer: Why is it harder for an element at the bottom of the group to gain
an electron that an element at the top of the group?
◍ No.
Answer: Can diamond conduct electricity?
◍ changes to concentration.
Answer: change concentration = no more equilibriumincrease conc. of
reactants = makes more productsdecrease conc. of products = less
reactantsetc
◍ factors affecting rate of reaction.
Answer: 1. temperatureparticles have more energy, collide more
frequently2. concentration or pressuremore particles in an area = more
frequent collisions3. surface areasmaller pieces = more area for collisions to
happen on
◍ greenhouse gases.
Answer: CO2, methane, water vapoursinsulate earth as they trap infrared
radiation (sun) in the atmosphere
◍ By looking at it's equation, weak acid equations are reversible.
Answer: How can we tell if an acid is a weak acid?
◍ flammability.
Answer: How easily a substance will burn.
◍ They have a higher melting and boiling point as you move down the
column.
Answer: Describe the correlation of the melting and boiling point of a group
7 element and it's location in the table
◍ What is the test for carbon dioxide?.
Answer: Making a solution of calcium hydroxide in water (called limewater)
and bubbling gas through it into the test tube - forming calcium carbonate
and water
