Figure 5 shows the apparatus used to investigate the melting of some crushed ice - Edexcel - GCSE Physics - Question 3 - 2023 - Paper 2
Question 3
Figure 5 shows the apparatus used to investigate the melting of some crushed ice.
(a)
(i) Suggest one safety precaution needed when using the electrical heater.
(i... show full transcript
Worked Solution & Example Answer:Figure 5 shows the apparatus used to investigate the melting of some crushed ice - Edexcel - GCSE Physics - Question 3 - 2023 - Paper 2
Step 1
Suggest one safety precaution needed when using the electrical heater.
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Answer
One safety precaution is to avoid touching the heater when it is switched on, as it may cause burns.
Step 2
Suggest one way of heating the crushed ice without using electricity.
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Answer
One way to heat the crushed ice is to place it under sunlight.
Step 3
Describe what happens to the crushed ice during the next 15 minutes.
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Answer
Initially, from P to Q, the temperature of the crushed ice increases as it absorbs heat.
From Q to R, the temperature remains constant at 0°C as the ice melts into water.
From R to S, the water's temperature begins to increase.
Step 4
Calculate the volume, V₂, of the bubble near the surface.
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Answer
Using the equation:
V2=P2P1×V1
Substituting the values: V2=1.073.30×0.50≈1.54 litres
