AQA AS Chemistry Paper 1 2026 Mark
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Which property would you expect the element radium, Ra, to possess?
A) It forms a soluble sulfate.
B) It does not react with water.
C) It is a good conductor of electricity.
D) It forms a covalent fluoride
C (It is a good conductor of electricity)
Which box hich statement is not correct?
A) Strontium has a lower first ionisation energy than calcium.
B) Strontium has a larger ionic radius than calcium.
C) Strontium reacts less vigorously with water than calcium.
D) Strontium hydroxide is more soluble in water than calcium hydroxide.
C (Strontium reacts less vigorously with water than calcium.)
,Which property of the Group 2 elements, Ca to Ba, increases with increasing
atomic number?
A) Atomic Radius
B) Electronegativity
C) First ionisation energy
D) Melting Point
A (Atomic Radius)
What is the best oxidising agent?
A) F2
B) F-
C) I2
D) I -
A (F2)
Some fuel in a spirit burner is burned, and the heat produced is used to heat a
container of water. In this experiment: The mass of water heated = m g The
temperature rise = y °C The specific heat capacity of water = c J K-1 g-1 What is
the amount of heat energy absorbed by the water?
A) mcy
B) mc(y + 273)
C) y / mc
D) (y + 273) / mc
,A (mcy)
The equation below represents the complete combustion of butane. C4H10(g) + 6
1 2 O2(g) --> 4CO2(g) + 5H2O(g) 20 cm3 of butane are completely burned in 0.20
dm3 of oxygen. Which statement is correct? All volumes are measured at the
same temperature and pressure.
A) 40 cm3 of carbon dioxide are formed
B) 0.065 dm3 of oxygen react
C) 70 cm3 of oxygen remain
D) 0.50 dm3 of steam are formed
C (70 cm3 of oxygen remain )
Which statement is correct about reactions involving halide ions box?
A) Sodium chloride forms chlorine when added to concentrated sulfuric acid.
B) Sodium chloride forms chlorine when added to bromine.
C) Sodium bromide forms bromine when added to concentrated sulfuric acid.
D) Sodium bromide forms bromine when added to iodine
C (Sodium bromide forms bromine when added to concentrated sulfuric acid.)
What is the percentage yield when 20 g of aluminium are produced from 50 g of
aluminium oxide?
2Al2O3 → 4Al + 3O2
, A) 76%
B) 40%
C) 33%
D) 19%
C (33%)
During the titration the student washed the inside of the conical flask with some
distilled water.
Suggest why this washing does not give an incorrect result
Sodium fluoride contains sodium ions (Na+ ) and fluoride ions (F- ). Na+ and F-
have the same electron configuration. Explain why a fluoride ion is larger than a
sodium ion.
Sodium fluoride contains sodium ions (Na+ ) and fluoride ions (F- ).
Na+ and F- have the same electron configuration. Explain why a fluoride ion is larger
than a sodium ion.
Explain, in terms of structure and bonding, why the melting point of sodium
fluoride is high.
(Electrostatic) forces of attraction between oppositely charged ions/Na+ and F-
Lots of energy needed to overcome/break forces
Scheme | Full Answers & Breakdown
guaranteed pass
Which property would you expect the element radium, Ra, to possess?
A) It forms a soluble sulfate.
B) It does not react with water.
C) It is a good conductor of electricity.
D) It forms a covalent fluoride
C (It is a good conductor of electricity)
Which box hich statement is not correct?
A) Strontium has a lower first ionisation energy than calcium.
B) Strontium has a larger ionic radius than calcium.
C) Strontium reacts less vigorously with water than calcium.
D) Strontium hydroxide is more soluble in water than calcium hydroxide.
C (Strontium reacts less vigorously with water than calcium.)
,Which property of the Group 2 elements, Ca to Ba, increases with increasing
atomic number?
A) Atomic Radius
B) Electronegativity
C) First ionisation energy
D) Melting Point
A (Atomic Radius)
What is the best oxidising agent?
A) F2
B) F-
C) I2
D) I -
A (F2)
Some fuel in a spirit burner is burned, and the heat produced is used to heat a
container of water. In this experiment: The mass of water heated = m g The
temperature rise = y °C The specific heat capacity of water = c J K-1 g-1 What is
the amount of heat energy absorbed by the water?
A) mcy
B) mc(y + 273)
C) y / mc
D) (y + 273) / mc
,A (mcy)
The equation below represents the complete combustion of butane. C4H10(g) + 6
1 2 O2(g) --> 4CO2(g) + 5H2O(g) 20 cm3 of butane are completely burned in 0.20
dm3 of oxygen. Which statement is correct? All volumes are measured at the
same temperature and pressure.
A) 40 cm3 of carbon dioxide are formed
B) 0.065 dm3 of oxygen react
C) 70 cm3 of oxygen remain
D) 0.50 dm3 of steam are formed
C (70 cm3 of oxygen remain )
Which statement is correct about reactions involving halide ions box?
A) Sodium chloride forms chlorine when added to concentrated sulfuric acid.
B) Sodium chloride forms chlorine when added to bromine.
C) Sodium bromide forms bromine when added to concentrated sulfuric acid.
D) Sodium bromide forms bromine when added to iodine
C (Sodium bromide forms bromine when added to concentrated sulfuric acid.)
What is the percentage yield when 20 g of aluminium are produced from 50 g of
aluminium oxide?
2Al2O3 → 4Al + 3O2
, A) 76%
B) 40%
C) 33%
D) 19%
C (33%)
During the titration the student washed the inside of the conical flask with some
distilled water.
Suggest why this washing does not give an incorrect result
Sodium fluoride contains sodium ions (Na+ ) and fluoride ions (F- ). Na+ and F-
have the same electron configuration. Explain why a fluoride ion is larger than a
sodium ion.
Sodium fluoride contains sodium ions (Na+ ) and fluoride ions (F- ).
Na+ and F- have the same electron configuration. Explain why a fluoride ion is larger
than a sodium ion.
Explain, in terms of structure and bonding, why the melting point of sodium
fluoride is high.
(Electrostatic) forces of attraction between oppositely charged ions/Na+ and F-
Lots of energy needed to overcome/break forces
