2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
AQA GCSE Chemistry Paper 1 (2025)
comprehensive questions and verified answers (
detailed & elaborated) ACTUAL EXAM 2025
TEST!!
Save
Terms in this set (368)
What is an atom? Smallest part of an element that can exist
What is an element? A substance made up of one type of atom
How are elements Using symbols, in the periodic table
represented?
Approximately how many 100
elements are there?
A substance made up of two or more elements
What is a compound?
chemically combined in fixed proportions
How are the elements in By chemical reaction
a compound separated?
How are chemical By word or symbol equations
reactions represented?
Which group of the Group 1, alkali metals
periodic table includes
sodium and potassium?
Which group of the Group 7, halogens
periodic table includes
chlorine, bromine and
iodine?
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,2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
Which group of the Group 0, noble gases
periodic table includes
helium, neon and argon?
What information does a Which elements are bonded together, and how
chemical formula many atoms of each are present
provide?
Two or more elements or compounds not
What is a mixture?
chemically bonded together
Which separation Distillation
technique is used to
separate a mixture of two
liquids?
Which separation Fractional distillation
technique is used to
separate a mixture of
more than two liquids?
Which separation Filtration
technique is used to
separate an insoluble
solid and a liquid?
Which separation Chromatography
technique is used to
separate a mixture of
coloured substances?
Which separation Crystallisation
technique is used to
separate a soluble solid
from its solution?
Before the discovery of Tiny spheres that could not be divided
the electron what were
atoms thought to be?
What is the 'plum Ball of positive charge with negative electrons
pudding' model of the embedded in it
atom?
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,2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
What experiment led to Rutherford's alpha particle scattering experiment
the development of the
nuclear model?
What happened to the Most alpha particles went straight through, but a
alpha particles fired at few were scattered
thin gold foil in
Rutherford's scattering
experiment?
What is the 'nuclear' Mass of the atom is in the centre (nucleus) and the
model of the atom that nucleus was positively charged
Rutherford developed
that replaced the 'plum
pudding' model?
Who proposed that Niels Bohr
electrons orbit the
nucleus at specific
distances?
What name was given to Protons
the positive particles in
the nucleus?
What did James Neutrons
Chadwick discover?
In what order were the Electron, proton, neutron
subatomic particles
discovered?
What is the relative +1 (positive 1)
charge on a proton?
What is the relative 0 (no charge)
charge on a neutron?
What is the relative -1 (negative 1)
charge on an electron?
Why are atoms Number of protons = number of electrons
electrically neutral?
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, 2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
What name is given to Atomic number
the number of protons in
an atom of an element?
What does the atomic The element. Atoms of a particular element have the
number (number of same number of protons
protons) determine?
What is the approximate 0.1 nm (1 x 10-10 m)
size of an atom?
What is the approximate 1 x 10-14 m
radius of a nucleus?
Where is almost all the In the nucleus
mass of an atom?
What is the relative mass 1
of a proton?
What is the relative mass 1
of a neutron?
What is the relative mass Very small / negligible
of an electron?
What name is given to Mass number
the sum of the number of
protons and neutrons?
Atoms of the same element with different numbers
What are isotopes?
of neutrons (same number of protons)
What is relative atomic Average mass of an element's atoms, compared to
mass, Mr, of an element? 1/12th the mass of a carbon-12 atom
Mr = (Ar 1 x abundance 1)/100 + (Ar 2 x abundance
How is Mr calculated?
2)/100
What is the 'electronic Shows where in the atoms the electrons are situated
structure' of an atom?
How is the electronic By numbers or a diagram
structure of an atom
represented?
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AQA GCSE Chemistry Paper 1 (2025)
comprehensive questions and verified answers (
detailed & elaborated) ACTUAL EXAM 2025
TEST!!
Save
Terms in this set (368)
What is an atom? Smallest part of an element that can exist
What is an element? A substance made up of one type of atom
How are elements Using symbols, in the periodic table
represented?
Approximately how many 100
elements are there?
A substance made up of two or more elements
What is a compound?
chemically combined in fixed proportions
How are the elements in By chemical reaction
a compound separated?
How are chemical By word or symbol equations
reactions represented?
Which group of the Group 1, alkali metals
periodic table includes
sodium and potassium?
Which group of the Group 7, halogens
periodic table includes
chlorine, bromine and
iodine?
https://quizlet.com/1009117181/aqa-gcse-chemistry-paper-1-2025-comprehensive-questions-and-verified-answers-detailed-elaborated-actual-ex… 1/33
,2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
Which group of the Group 0, noble gases
periodic table includes
helium, neon and argon?
What information does a Which elements are bonded together, and how
chemical formula many atoms of each are present
provide?
Two or more elements or compounds not
What is a mixture?
chemically bonded together
Which separation Distillation
technique is used to
separate a mixture of two
liquids?
Which separation Fractional distillation
technique is used to
separate a mixture of
more than two liquids?
Which separation Filtration
technique is used to
separate an insoluble
solid and a liquid?
Which separation Chromatography
technique is used to
separate a mixture of
coloured substances?
Which separation Crystallisation
technique is used to
separate a soluble solid
from its solution?
Before the discovery of Tiny spheres that could not be divided
the electron what were
atoms thought to be?
What is the 'plum Ball of positive charge with negative electrons
pudding' model of the embedded in it
atom?
https://quizlet.com/1009117181/aqa-gcse-chemistry-paper-1-2025-comprehensive-questions-and-verified-answers-detailed-elaborated-actual-ex… 2/33
,2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
What experiment led to Rutherford's alpha particle scattering experiment
the development of the
nuclear model?
What happened to the Most alpha particles went straight through, but a
alpha particles fired at few were scattered
thin gold foil in
Rutherford's scattering
experiment?
What is the 'nuclear' Mass of the atom is in the centre (nucleus) and the
model of the atom that nucleus was positively charged
Rutherford developed
that replaced the 'plum
pudding' model?
Who proposed that Niels Bohr
electrons orbit the
nucleus at specific
distances?
What name was given to Protons
the positive particles in
the nucleus?
What did James Neutrons
Chadwick discover?
In what order were the Electron, proton, neutron
subatomic particles
discovered?
What is the relative +1 (positive 1)
charge on a proton?
What is the relative 0 (no charge)
charge on a neutron?
What is the relative -1 (negative 1)
charge on an electron?
Why are atoms Number of protons = number of electrons
electrically neutral?
https://quizlet.com/1009117181/aqa-gcse-chemistry-paper-1-2025-comprehensive-questions-and-verified-answers-detailed-elaborated-actual-ex… 3/33
, 2/22/25, 6:15 AM AQA GCSE Chemistry Paper 1 (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM…
What name is given to Atomic number
the number of protons in
an atom of an element?
What does the atomic The element. Atoms of a particular element have the
number (number of same number of protons
protons) determine?
What is the approximate 0.1 nm (1 x 10-10 m)
size of an atom?
What is the approximate 1 x 10-14 m
radius of a nucleus?
Where is almost all the In the nucleus
mass of an atom?
What is the relative mass 1
of a proton?
What is the relative mass 1
of a neutron?
What is the relative mass Very small / negligible
of an electron?
What name is given to Mass number
the sum of the number of
protons and neutrons?
Atoms of the same element with different numbers
What are isotopes?
of neutrons (same number of protons)
What is relative atomic Average mass of an element's atoms, compared to
mass, Mr, of an element? 1/12th the mass of a carbon-12 atom
Mr = (Ar 1 x abundance 1)/100 + (Ar 2 x abundance
How is Mr calculated?
2)/100
What is the 'electronic Shows where in the atoms the electrons are situated
structure' of an atom?
How is the electronic By numbers or a diagram
structure of an atom
represented?
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