AQA GCSE COMBINED SCIENCE: TRILOGY
ACTUAL EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◍ Aluminium.
Answer: Atomic Number: 13Symbol: Al
◍ How many neutrons does an aluminium atom have?.
Answer: 14
◍ What is Diffusion?.
Answer: The net movement of particles from an area of higher concentration
to an area of lower concentration until they are evenly spread out
◍ Element.
Answer: A pure substance made of only one kind of atom For example, a
diamond is made of pure carbon!
◍ What is the function of chloroplasts?.
Answer: To make food through photosynthesis, and contains chlorophyll
◍ DNA.
Answer: Nucleic acid molecules that contain genetic information and make
up chromosomes
◍ Electrons.
Answer: Negatively charged particles
◍ Plum Pudding Model (Thomson).
Answer: JJ Thomson's atomic model which depicts a positively charged
space containing negatively charged electrons
◍ The angle of reflection is....
Answer: between the reflected ray and the normal.
,◍ Denature.
Answer: When the shape of an enzyme is changed (by excessive
temperature or pH) so that it no longer functions
◍ What is the atomic number of aluminium?.
Answer: 13
◍ How many neutrons are there in an atom of potassium?.
Answer: 20
◍ Compound.
Answer: A substance made up of atoms of two or more different elements
joined by chemical bonds. For example, water.
◍ How many electrons are there in an aluminium atom?.
Answer: 13
◍ Can you draw a sodium atom?.
Answer: Sodium
◍ Transverse waves.
Answer: The oscillations are perpendicular (at 90 degrees to the direction of
energy transfer). E.g. all electromagnetic waves (radio, microwave, infrared,
visible light, ultra violet, x-rays and gamma rays) travel at the same speed in
a vacuum.
◍ How many electrons does a lithium atom contain?.
Answer: 3
◍ The amount of energy required to change the state of 1kg of the substance
with no change in temperature.
Answer: Specific latent heat
◍ What is the mass number of lithium?.
Answer: 7
◍ Freezing.
Answer: Another word for when a liquid changes into a solid.
,◍ How many protons are there in an atom of potassium?.
Answer: 19
◍ Sodium.
Answer: Atomic Number: 11Symbol: Na
◍ What is 1um in meters?.
Answer: 1x10-6m
◍ Proton.
Answer: A particle that has a positive charge and is found in the nucleus of
an atom
◍ Forces which do not require contact....
Answer: Non-contact Forces
◍ What is the electron structure of a sodium atom?.
Answer: 2.8.1
◍ What is the electron structure of aluminium?.
Answer: 2.8.3
◍ What ventricle pumps deoxygenated blood to the lungs?.
Answer: The right ventricle
◍ How many electrons does an aluminium atom have?.
Answer: 13
◍ What group can aluminium be found in?.
Answer: Aluminium is a group 3 element
◍ How many electrons does a sodium atom have?.
Answer: 11
◍ newton/meters and joules are.
Answer: the same
◍ Why do giant covalent bonds have such high melting point?.
Answer: All atoms are bonded together by strong covalent bonds
, ◍ Why do palisade mesophyll cells have a large central vacuole?.
Answer: To push chloroplasts to the outside of the cell so that they absorb
more sunlight
◍ number of neutrons =.
Answer: mass number - atomic number
◍ What limitations do diagrams have on showing the structure of an ionic
compound?.
Answer: It does not show the actual shape of the compound, and it says
nothing about their solubility
◍ capillary.
Answer: Tiny blood vessels with walls one cell thick that allow transport of
substances between the cells and the blood
◍ What substances are chemically digested at the stomach?.
Answer: Proteins by proteases
◍ Specific Latent Heat Of Fusion.
Answer: The amount of energy required to change one kilogram of a solid
into a liquid with no change of temperature.
◍ Factors that affect the rate of diffusion.
Answer: The concentration gradient, The Temperature, The Surface Area Of
the membrane
◍ What does the group number tell us?.
Answer: the number of electrons in the outer shell
◍ What is osmosis?.
Answer: The movement of water from an area of high concentration to an
area of low concentration across a partially permeable membrane
◍ In alpha decay, what happens to the atomic number of an isotope?.
Answer: Drops by 2
◍ Where does HIV reproduce?.
ACTUAL EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◍ Aluminium.
Answer: Atomic Number: 13Symbol: Al
◍ How many neutrons does an aluminium atom have?.
Answer: 14
◍ What is Diffusion?.
Answer: The net movement of particles from an area of higher concentration
to an area of lower concentration until they are evenly spread out
◍ Element.
Answer: A pure substance made of only one kind of atom For example, a
diamond is made of pure carbon!
◍ What is the function of chloroplasts?.
Answer: To make food through photosynthesis, and contains chlorophyll
◍ DNA.
Answer: Nucleic acid molecules that contain genetic information and make
up chromosomes
◍ Electrons.
Answer: Negatively charged particles
◍ Plum Pudding Model (Thomson).
Answer: JJ Thomson's atomic model which depicts a positively charged
space containing negatively charged electrons
◍ The angle of reflection is....
Answer: between the reflected ray and the normal.
,◍ Denature.
Answer: When the shape of an enzyme is changed (by excessive
temperature or pH) so that it no longer functions
◍ What is the atomic number of aluminium?.
Answer: 13
◍ How many neutrons are there in an atom of potassium?.
Answer: 20
◍ Compound.
Answer: A substance made up of atoms of two or more different elements
joined by chemical bonds. For example, water.
◍ How many electrons are there in an aluminium atom?.
Answer: 13
◍ Can you draw a sodium atom?.
Answer: Sodium
◍ Transverse waves.
Answer: The oscillations are perpendicular (at 90 degrees to the direction of
energy transfer). E.g. all electromagnetic waves (radio, microwave, infrared,
visible light, ultra violet, x-rays and gamma rays) travel at the same speed in
a vacuum.
◍ How many electrons does a lithium atom contain?.
Answer: 3
◍ The amount of energy required to change the state of 1kg of the substance
with no change in temperature.
Answer: Specific latent heat
◍ What is the mass number of lithium?.
Answer: 7
◍ Freezing.
Answer: Another word for when a liquid changes into a solid.
,◍ How many protons are there in an atom of potassium?.
Answer: 19
◍ Sodium.
Answer: Atomic Number: 11Symbol: Na
◍ What is 1um in meters?.
Answer: 1x10-6m
◍ Proton.
Answer: A particle that has a positive charge and is found in the nucleus of
an atom
◍ Forces which do not require contact....
Answer: Non-contact Forces
◍ What is the electron structure of a sodium atom?.
Answer: 2.8.1
◍ What is the electron structure of aluminium?.
Answer: 2.8.3
◍ What ventricle pumps deoxygenated blood to the lungs?.
Answer: The right ventricle
◍ How many electrons does an aluminium atom have?.
Answer: 13
◍ What group can aluminium be found in?.
Answer: Aluminium is a group 3 element
◍ How many electrons does a sodium atom have?.
Answer: 11
◍ newton/meters and joules are.
Answer: the same
◍ Why do giant covalent bonds have such high melting point?.
Answer: All atoms are bonded together by strong covalent bonds
, ◍ Why do palisade mesophyll cells have a large central vacuole?.
Answer: To push chloroplasts to the outside of the cell so that they absorb
more sunlight
◍ number of neutrons =.
Answer: mass number - atomic number
◍ What limitations do diagrams have on showing the structure of an ionic
compound?.
Answer: It does not show the actual shape of the compound, and it says
nothing about their solubility
◍ capillary.
Answer: Tiny blood vessels with walls one cell thick that allow transport of
substances between the cells and the blood
◍ What substances are chemically digested at the stomach?.
Answer: Proteins by proteases
◍ Specific Latent Heat Of Fusion.
Answer: The amount of energy required to change one kilogram of a solid
into a liquid with no change of temperature.
◍ Factors that affect the rate of diffusion.
Answer: The concentration gradient, The Temperature, The Surface Area Of
the membrane
◍ What does the group number tell us?.
Answer: the number of electrons in the outer shell
◍ What is osmosis?.
Answer: The movement of water from an area of high concentration to an
area of low concentration across a partially permeable membrane
◍ In alpha decay, what happens to the atomic number of an isotope?.
Answer: Drops by 2
◍ Where does HIV reproduce?.
