2026 AQA A LEVEL CHEMISTRY PAPER 3
EXAMPREP MATERIAL SOLVED QUESTIONS
AND VERIFIED SOLUTIONS PREMIUM
COLLECTION
◉ Make Up a Volumetric Solution. Answer: 1. Weigh dry weighing
boat
2. Place mass of solid into the boat and weigh accurately
3. Pour solid into a beaker. Reweigh empty weighing boat and
calculate how much was transferred
4. Add deionised water and stir with glass rod until dissolved
5. Funnel into a volumetric flask
6. Make up to mark with deionised water until bottom of meniscus is
on the mark
7. Stopper and invert to mix
◉ Acid-Base Titration. Answer: 1. Fill a burette
2. Use a pipette to transfer 25cm³ of the other solution into the conical
flask
3. Add 2-3 drops of indicator
4. Start adding from the burette, swirling constantly, until the
indicator changes colour. Record how much solution was added
(rough titre)
, 5. Repeat to get concordant results and calculate a mean titre
◉ Measuring Enthalpy Change of Combustion. Answer: 1. Measure
100cm³ of water into a calorimeter
2. Weigh the spirit burner
3. Measure initial temperature of the water
4. Clamp calorimeter above spirit burner
5. Light the spirit burner
6. Heat until the temperature rises by 15°C. Stir and record final
temperature
7. Reweigh spirit burner
8. Calculate temperature change and heat energy change (q=mcAT)
9. Calculate mass of fuel used and moles of fuel used. Calculate
energy change per mole.
◉ Measuring Enthalpy Change of Neutralisation. Answer: 1. Place
polystyrene cup in glass beaker
2. Measure out 25cm³ of 1moldm³ HCl and transfer to polystyrene
cup
3. Stir and record temperature
4. Measure out 25cm³ of 1moldm³ NaOH into another measuring
cylinder.
5. Add NaOH to HCl, stir and record the highest temperature reached
6. Calculate temperature change and q=mcAT
7. Calculate moles of acid used and water formed, and the enthalpy of
neutralisation
EXAMPREP MATERIAL SOLVED QUESTIONS
AND VERIFIED SOLUTIONS PREMIUM
COLLECTION
◉ Make Up a Volumetric Solution. Answer: 1. Weigh dry weighing
boat
2. Place mass of solid into the boat and weigh accurately
3. Pour solid into a beaker. Reweigh empty weighing boat and
calculate how much was transferred
4. Add deionised water and stir with glass rod until dissolved
5. Funnel into a volumetric flask
6. Make up to mark with deionised water until bottom of meniscus is
on the mark
7. Stopper and invert to mix
◉ Acid-Base Titration. Answer: 1. Fill a burette
2. Use a pipette to transfer 25cm³ of the other solution into the conical
flask
3. Add 2-3 drops of indicator
4. Start adding from the burette, swirling constantly, until the
indicator changes colour. Record how much solution was added
(rough titre)
, 5. Repeat to get concordant results and calculate a mean titre
◉ Measuring Enthalpy Change of Combustion. Answer: 1. Measure
100cm³ of water into a calorimeter
2. Weigh the spirit burner
3. Measure initial temperature of the water
4. Clamp calorimeter above spirit burner
5. Light the spirit burner
6. Heat until the temperature rises by 15°C. Stir and record final
temperature
7. Reweigh spirit burner
8. Calculate temperature change and heat energy change (q=mcAT)
9. Calculate mass of fuel used and moles of fuel used. Calculate
energy change per mole.
◉ Measuring Enthalpy Change of Neutralisation. Answer: 1. Place
polystyrene cup in glass beaker
2. Measure out 25cm³ of 1moldm³ HCl and transfer to polystyrene
cup
3. Stir and record temperature
4. Measure out 25cm³ of 1moldm³ NaOH into another measuring
cylinder.
5. Add NaOH to HCl, stir and record the highest temperature reached
6. Calculate temperature change and q=mcAT
7. Calculate moles of acid used and water formed, and the enthalpy of
neutralisation
