Actual 2025 AQA GCSE CHEMISTRY 8462/1H
Paper 1 Higher Tier Merged Question Paper +
Mark S, Exams of Chemistry with pictures
element
A pure substance made of only one kind of atom
atom
the smallest component of an element having the chemical properties
of the element
periodic table
a table of the chemical elements arranged in order of atomic number,
usually in rows, so that elements with similar atomic structure (and
hence similar chemical properties) appear in vertical columns.
compound
A substance made up of atoms of two or more different elements joined
by chemical bonds
electron
A tiny, negatively charged particle that moves around the nucleus of
an atom.
,nucleus
A region that is located at the centre of an atom and contains most
of the atom's mass (protons and neutrons)
proton
A subatomic particle that has a positive charge and that is found in
the nucleus of an atom
neutron
A subatomic particle that has no charge and that is found in the
nucleus of an atom
atomic number
The number of protons in the nucleus of an atom
atomic mass
The average mass of all the isotopes of an element
mixture
A combination of two or more substances that are not chemically
combined
, chemical reaction
the process by which one or more substances change to produce one or
more different substances
mass
A measure of the amount of matter in an object
(g)
indicates that a substance in a chemical equation is a gas
(s)
indicates that a substance in a chemical equation is a solid
(aq)
indicates that a substance in a chemical equation is dissolved in
solution
(l)
indicates that a substance in a chemical equation is a liquid
chemical formula
A combination of chemical symbols and numbers to represent a
substance
chemical equation
A representation of a chemical reaction that uses symbols to show the
relationship between the reactants and the products
Paper 1 Higher Tier Merged Question Paper +
Mark S, Exams of Chemistry with pictures
element
A pure substance made of only one kind of atom
atom
the smallest component of an element having the chemical properties
of the element
periodic table
a table of the chemical elements arranged in order of atomic number,
usually in rows, so that elements with similar atomic structure (and
hence similar chemical properties) appear in vertical columns.
compound
A substance made up of atoms of two or more different elements joined
by chemical bonds
electron
A tiny, negatively charged particle that moves around the nucleus of
an atom.
,nucleus
A region that is located at the centre of an atom and contains most
of the atom's mass (protons and neutrons)
proton
A subatomic particle that has a positive charge and that is found in
the nucleus of an atom
neutron
A subatomic particle that has no charge and that is found in the
nucleus of an atom
atomic number
The number of protons in the nucleus of an atom
atomic mass
The average mass of all the isotopes of an element
mixture
A combination of two or more substances that are not chemically
combined
, chemical reaction
the process by which one or more substances change to produce one or
more different substances
mass
A measure of the amount of matter in an object
(g)
indicates that a substance in a chemical equation is a gas
(s)
indicates that a substance in a chemical equation is a solid
(aq)
indicates that a substance in a chemical equation is dissolved in
solution
(l)
indicates that a substance in a chemical equation is a liquid
chemical formula
A combination of chemical symbols and numbers to represent a
substance
chemical equation
A representation of a chemical reaction that uses symbols to show the
relationship between the reactants and the products
