AQA GCSE COMBINED SCIENCE: TRILOGY
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ What is electrolysis?.
Answer: Electrolysis is the processes that uses electricity to break down
ionic compounds into elements
◍ James Chadwick.
Answer: A British physicist, who confirmed the existence of neutrons,
which have no charge. Atomic nuclei contain neutrons and positively
charged protons in the electron cloud model.
◍ What is formed when hydrochloric acid reacts with magnesium?.
Answer: Hydrochloric Acid + Magnesium → Magnesium Chloride +
Hydrogen
◍ activation energy.
Answer: The minimum energy needed to initiate a reaction.
◍ carbonic acid.
Answer: H₂CO₃, a weak acid, found in sodas and fizzy water
◍ What element is diamond formed from?.
Answer: Diamond is formed from the element carbon
◍ Carbon.
Answer: Element which is more reactive than many metals and so can be
used to extract them from their ores
,◍ What is formed when group 7 elements react with non-metal atoms?.
Answer: Group 7 elements form covalent compounds when they react with
other non-metal atoms so the electrons are shared
◍ diatomic element.
Answer: Elements whose atoms always form stable pairs. (Have No Fear Of
Ice Cold Beer) Hydrogen (H₂), Nitrogen (N₂), Fluorine (F₂), Oxygen (O₂),
Iodine (I₂), Chlorine (Cl₂), Bromine (Br₂),
◍ How many electrons can you fit in the first, second and third shells?.
Answer: Shell 1 : 2 electronsShell 2 : 8 electrons Shell 3 : 8 electrons
◍ Show an example of a displacement reaction.
Answer: Magnesium + Iron Oxide → Magnesium Oxide + Iron
◍ electronegativity.
Answer: A measure of the ability of an atom in a chemical compound to
attract electrons. (A-Level)
◍ Burning Hydrocarbons.
Answer: Hydrocarbon + Oxygen -> Water + Carbon Dioxide
◍ Crude Oil.
Answer: Fossil fuel mixture of hydrocarbons
◍ What are exothermic reactions?.
Answer: Exothermic reactions are reactions that transfer energy to their
surroundings
◍ What is a molecule?.
Answer: A molecule is a substance that has any elements chemically joined
◍ aluminium oxide.
Answer: Al₂O₃
◍ Compound.
Answer: A substance made when two or more elements are chemically
bonded together
, ◍ (g).
Answer: indicates that a substance in a chemical equation is a gas
◍ Early periodic table.
Answer: An arrangement of elements in the order of their atomic mass
◍ Describe the structure of an ionic compound.
Answer: Ionic compounds form a giant ionic lattice where every positive ion
is surrounded by a negative ions
◍ Does silicon dioxide have a high or low melting and boiling point?.
Answer: Silicon dioxide has a high melting and boiling point
◍ Joule.
Answer: SI unit of energy
◍ Endothermic.
Answer: Reaction that absorbs in energy
◍ BBRR.
Answer: Breaking bonds aBsorbs energy, foRming bonds Releases energy
◍ Thermal decomposition.
Answer: Breaking down a compound by heating it
◍ Why do atoms have the same number of protons as electrons?.
Answer: Because atoms have have no overall charge
◍ polymer.
Answer: Any of numerous natural and synthetic compounds consisting of up
to millions of repeated linked units, each a relatively light and simple
molecule.
◍ energy.
Answer: the ability to do work
◍ What is the Reactivity Series?.
Answer: The reactivity series places metals in increasing order of reactivity
8464/C/2F CHEMISTRY PAPER 2F
8464/C/2F PAPER & MARK SCHEME
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ What is electrolysis?.
Answer: Electrolysis is the processes that uses electricity to break down
ionic compounds into elements
◍ James Chadwick.
Answer: A British physicist, who confirmed the existence of neutrons,
which have no charge. Atomic nuclei contain neutrons and positively
charged protons in the electron cloud model.
◍ What is formed when hydrochloric acid reacts with magnesium?.
Answer: Hydrochloric Acid + Magnesium → Magnesium Chloride +
Hydrogen
◍ activation energy.
Answer: The minimum energy needed to initiate a reaction.
◍ carbonic acid.
Answer: H₂CO₃, a weak acid, found in sodas and fizzy water
◍ What element is diamond formed from?.
Answer: Diamond is formed from the element carbon
◍ Carbon.
Answer: Element which is more reactive than many metals and so can be
used to extract them from their ores
,◍ What is formed when group 7 elements react with non-metal atoms?.
Answer: Group 7 elements form covalent compounds when they react with
other non-metal atoms so the electrons are shared
◍ diatomic element.
Answer: Elements whose atoms always form stable pairs. (Have No Fear Of
Ice Cold Beer) Hydrogen (H₂), Nitrogen (N₂), Fluorine (F₂), Oxygen (O₂),
Iodine (I₂), Chlorine (Cl₂), Bromine (Br₂),
◍ How many electrons can you fit in the first, second and third shells?.
Answer: Shell 1 : 2 electronsShell 2 : 8 electrons Shell 3 : 8 electrons
◍ Show an example of a displacement reaction.
Answer: Magnesium + Iron Oxide → Magnesium Oxide + Iron
◍ electronegativity.
Answer: A measure of the ability of an atom in a chemical compound to
attract electrons. (A-Level)
◍ Burning Hydrocarbons.
Answer: Hydrocarbon + Oxygen -> Water + Carbon Dioxide
◍ Crude Oil.
Answer: Fossil fuel mixture of hydrocarbons
◍ What are exothermic reactions?.
Answer: Exothermic reactions are reactions that transfer energy to their
surroundings
◍ What is a molecule?.
Answer: A molecule is a substance that has any elements chemically joined
◍ aluminium oxide.
Answer: Al₂O₃
◍ Compound.
Answer: A substance made when two or more elements are chemically
bonded together
, ◍ (g).
Answer: indicates that a substance in a chemical equation is a gas
◍ Early periodic table.
Answer: An arrangement of elements in the order of their atomic mass
◍ Describe the structure of an ionic compound.
Answer: Ionic compounds form a giant ionic lattice where every positive ion
is surrounded by a negative ions
◍ Does silicon dioxide have a high or low melting and boiling point?.
Answer: Silicon dioxide has a high melting and boiling point
◍ Joule.
Answer: SI unit of energy
◍ Endothermic.
Answer: Reaction that absorbs in energy
◍ BBRR.
Answer: Breaking bonds aBsorbs energy, foRming bonds Releases energy
◍ Thermal decomposition.
Answer: Breaking down a compound by heating it
◍ Why do atoms have the same number of protons as electrons?.
Answer: Because atoms have have no overall charge
◍ polymer.
Answer: Any of numerous natural and synthetic compounds consisting of up
to millions of repeated linked units, each a relatively light and simple
molecule.
◍ energy.
Answer: the ability to do work
◍ What is the Reactivity Series?.
Answer: The reactivity series places metals in increasing order of reactivity
