4 marksHigher6.3.2.3 Changes of state and specific latent heat
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.3.2.3
Original practice question
Answer and supported method checks
A heater supplies 12000 J to 0.10 kg of ice already at 0 °C. The specific latent heat of fusion is 334000 J/kg. Assume no energy reaches the surroundings.
.1
Calculate the mass of ice that melts.
[2 marks]
.2
Evaluate the statement that the final temperature must be above 0 °C because energy was supplied.
[2 marks]
6 marksHigher6.2.4.3 The National Grid
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.2.4.3
Original practice question
Answer and supported method checks
A town receives electricity from distant power stations through the National Grid. A pupil proposes removing all transformers because transformers do not create energy.
Evaluate the proposal by explaining the roles of the transformers and the cables.
[6 marks]
4 marksFoundation and Higher6.3.3.1 Particle motion in gases
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.3.3.1
Original practice question
Answer and supported method checks
A student warms a rigid sealed flask in water and immediately records the gas pressure when the water reaches a target temperature. They then record a higher pressure two minutes later, although the water temperature has not changed.
Explain the delayed pressure change and describe how to improve the method.
[4 marks]
6 marksFoundation and Higher6.4.2.4 Radioactive contamination
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.4.2.4
Original practice question
Answer and supported method checks
A worker is near a sealed radioactive source for a short time. Another worker has radioactive dust on a glove. A supervisor recommends tongs, shielding and careful removal of the contaminated glove.
Explain the different hazards and how the precautions reduce them.
[6 marks]
5 marksFoundation and HigherRequired practical 146.1.1.3 Energy changes in systems
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.1.1.3
Original practice question
Answer and supported method checks
In a specific heat capacity investigation, a 0.60 kg block receives 7200 J from a heater. Its temperature rises from 18 °C to 38 °C. A second run with the same block and input energy gives a rise of only 16 °C.
.1
Calculate the specific heat capacity using the first run.
[3 marks]
.2
The student claims that the second run proves the metal has changed. Evaluate the claim and describe one check on the temperature measurement.
