AQA GCSE CHEMISTRY PAPER 1 EXAM WITH
VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| ALREADY GRADED A+||
LATEST VERSION 2026
Why does graphene have a high melting point? - ANSWER-Because large
amounts of energy are needed to overcome their strong covalent bonds to make
it melt or boil
Why does graphene conduct electricity? - ANSWER-The delocalised electrons
are free to move and can carry a charge across its surface
What are fullerenes? - ANSWER-Molecules of carbon atoms with hollow
shapes
What is the structure of fullerenes based upon? - ANSWER-Hexagonal rings of
carbon atoms (though they may also contains rings of five or seven carbon
atoms)
What was the first fullerene? - ANSWER-Buckminsterfullerene (C60) which
has a spherical shape
What are carbon nanotubes? - ANSWER-Cylindrical fullerenes with very high
length to diameter ratios giving then high tensile strength so are not easily
stretched
,What are carbon nanotubes used for? - ANSWER-In nanotechnology,
electronics and materials
What is nanoscience? - ANSWER-Nanoscience refers to structures
(nanoparticles) that are 1-100 nm in size, of the order of a few hundred atoms
What size are fine particles? - ANSWER-Fine particles (PM2.5) have a
diameter between 100 and 2500 nm
What size are coarse particles? - ANSWER-Coarse particles (PM10) have a
diameter between 1 x 10-7 m and 2.5 x 10-6 m and are often referred to as dust
As the size of a cube decrease by a factor of 10, what happens to the surface to
volume ratio? - ANSWER-It also decrease by a factor of 10
Why do nanoparticles have different properties to those for the same material in
bulk? - ANSWER-Because of their high surface to volume ratio
Name one advantage of using nanoparticles with a high surface to volume ratio
- ANSWER-Smaller quantities are needed to be effective than for materials
with normal particles sizes
What is produced when a metal reacts with an acid? - ANSWER-A metal salt
and hydrogen gas
What happens in an oxidation reaction in terms of electrons? - ANSWER-The
loss of electrons
What happens in a reduction reaction in terms of electrons? - ANSWER-The
gain of electrons
,What is the reaction called when oxidation and reduction take place at the same
time? - ANSWER-A redox reaction
What is an ionic equation? - ANSWER-A chemical equation that shows how
positively charged ions join with negatively charged ions to make a compound
Write the ionic equation for the displacement reaction between Magnesium and
Copper Sulfate solution - ANSWER-Mg(s) + Cu2+(aq) → Mg2+(aq) + Cu(s)
Write the half equation for the oxidation of Magnesium - ANSWER-Mg(s) →
Mg2+(aq) + 2e-
Write the half equation for the reduction of the copper ion Cu2+ - ANSWER-
Cu2+(aq) + 2e- → Cu(s)
How are unreactive metals found in the Earth's crust? - ANSWER-As the metal
itself
Name two metals found as elements in the Earth's crust - ANSWER-Gold,
platinum
How are most metals found in the Earth's crust? - ANSWER-As metal
compounds
How do extract metal from a metal compound? - ANSWER-By chemical
reactions
How do you extract metals from metal oxides when the metal is less reactive
than Carbon? - ANSWER-By reduction with carbon
, Why can Carbon extract iron from iron oxide? - ANSWER-Because it more
reactive than iron
What is an ore? - ANSWER-A rock that contains enough of a metal or a metal
compound to make extracting the metal worthwhile
How do you extract metals from metal oxides when the metal is more reactive
than Carbon? - ANSWER-By electrolysis of the metal compound
When acids react with some metals what is produced? - ANSWER-A metal salt
and hydrogen
Name five applications of nanoparticles - ANSWER-In medicine, in electronics,
in cosmetics and sun creams, as deodorants and as catalysts
What are the possible risks of using nanoparticles? - ANSWER-Their size
makes it possible to breathe them in and for them to pass into cells where they
have harmful effects
What is the law of conservation of mass? - ANSWER-That no atoms are lost or
made during a chemical reaction so that the mass of the products equals the
mass of the reactants
What is the relative formula mass (Mr) of a compound? - ANSWER-The sum
of the relative atomic masses of the atoms in the numbers shown in the formula
What is the relationship between the sum of the relative formula masses of the
reactant and the sum of the relative formula masses of the products in a
balanced symbol equation? - ANSWER-They are equal
VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| ALREADY GRADED A+||
LATEST VERSION 2026
Why does graphene have a high melting point? - ANSWER-Because large
amounts of energy are needed to overcome their strong covalent bonds to make
it melt or boil
Why does graphene conduct electricity? - ANSWER-The delocalised electrons
are free to move and can carry a charge across its surface
What are fullerenes? - ANSWER-Molecules of carbon atoms with hollow
shapes
What is the structure of fullerenes based upon? - ANSWER-Hexagonal rings of
carbon atoms (though they may also contains rings of five or seven carbon
atoms)
What was the first fullerene? - ANSWER-Buckminsterfullerene (C60) which
has a spherical shape
What are carbon nanotubes? - ANSWER-Cylindrical fullerenes with very high
length to diameter ratios giving then high tensile strength so are not easily
stretched
,What are carbon nanotubes used for? - ANSWER-In nanotechnology,
electronics and materials
What is nanoscience? - ANSWER-Nanoscience refers to structures
(nanoparticles) that are 1-100 nm in size, of the order of a few hundred atoms
What size are fine particles? - ANSWER-Fine particles (PM2.5) have a
diameter between 100 and 2500 nm
What size are coarse particles? - ANSWER-Coarse particles (PM10) have a
diameter between 1 x 10-7 m and 2.5 x 10-6 m and are often referred to as dust
As the size of a cube decrease by a factor of 10, what happens to the surface to
volume ratio? - ANSWER-It also decrease by a factor of 10
Why do nanoparticles have different properties to those for the same material in
bulk? - ANSWER-Because of their high surface to volume ratio
Name one advantage of using nanoparticles with a high surface to volume ratio
- ANSWER-Smaller quantities are needed to be effective than for materials
with normal particles sizes
What is produced when a metal reacts with an acid? - ANSWER-A metal salt
and hydrogen gas
What happens in an oxidation reaction in terms of electrons? - ANSWER-The
loss of electrons
What happens in a reduction reaction in terms of electrons? - ANSWER-The
gain of electrons
,What is the reaction called when oxidation and reduction take place at the same
time? - ANSWER-A redox reaction
What is an ionic equation? - ANSWER-A chemical equation that shows how
positively charged ions join with negatively charged ions to make a compound
Write the ionic equation for the displacement reaction between Magnesium and
Copper Sulfate solution - ANSWER-Mg(s) + Cu2+(aq) → Mg2+(aq) + Cu(s)
Write the half equation for the oxidation of Magnesium - ANSWER-Mg(s) →
Mg2+(aq) + 2e-
Write the half equation for the reduction of the copper ion Cu2+ - ANSWER-
Cu2+(aq) + 2e- → Cu(s)
How are unreactive metals found in the Earth's crust? - ANSWER-As the metal
itself
Name two metals found as elements in the Earth's crust - ANSWER-Gold,
platinum
How are most metals found in the Earth's crust? - ANSWER-As metal
compounds
How do extract metal from a metal compound? - ANSWER-By chemical
reactions
How do you extract metals from metal oxides when the metal is less reactive
than Carbon? - ANSWER-By reduction with carbon
, Why can Carbon extract iron from iron oxide? - ANSWER-Because it more
reactive than iron
What is an ore? - ANSWER-A rock that contains enough of a metal or a metal
compound to make extracting the metal worthwhile
How do you extract metals from metal oxides when the metal is more reactive
than Carbon? - ANSWER-By electrolysis of the metal compound
When acids react with some metals what is produced? - ANSWER-A metal salt
and hydrogen
Name five applications of nanoparticles - ANSWER-In medicine, in electronics,
in cosmetics and sun creams, as deodorants and as catalysts
What are the possible risks of using nanoparticles? - ANSWER-Their size
makes it possible to breathe them in and for them to pass into cells where they
have harmful effects
What is the law of conservation of mass? - ANSWER-That no atoms are lost or
made during a chemical reaction so that the mass of the products equals the
mass of the reactants
What is the relative formula mass (Mr) of a compound? - ANSWER-The sum
of the relative atomic masses of the atoms in the numbers shown in the formula
What is the relationship between the sum of the relative formula masses of the
reactant and the sum of the relative formula masses of the products in a
balanced symbol equation? - ANSWER-They are equal
