/edexcel/questions","basePath":"/gcse/physics/edexcel/gas-pressure-and-temperature/questions","formulaUrl":null,"initialIndex":9,"initialQuestionWindow":[{"id":"17719638-9d66-4e5c-9eaf-95132968b4a7","revisionId":"477ca5f1-23b4-4d28-81b7-3496142b6b1e","questionNumber":null,"questionType":"LA","specification":"A researcher investigates the relationship between the temperature and pressure of a fixed volume of argon gas in a sealed rigid cylinder. Their results are shown in Table 1.\n\n### Table 1\n| Temperature ($T$) / $\\text{K}$ | Pressure ($p$) / $\\text{kPa}$ | $p / T$ / $\\text{kPa}\\cdot\\text{K}^{-1}$ |\n|:---|:---|:---|\n| 280 | 126 | 0.450 |\n| 300 | 134 | 0.447 |\n| 320 | 145 | 0.453 |\n| 340 | 152 | 0.447 |\n| 360 | 163 | 0.453 |","difficulty":6,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"e7b132c0-d04b-48ce-8f9e-925fb7150f1a","label":null,"content":"Explain whether the values in the column headed '$p / T$' fit the equation:\n\n$$\\frac{p_1}{T_1} = \\frac{p_2}{T_2}$$","markscheme":"- States that the experimental values fit the equation (or are consistent with the relationship) B1\n- Explains that if the equation holds, the ratio of pressure to temperature ($p / T$) must remain constant M1\n- Identifies that the calculated values (ranging from $0.447$ to $0.453\\text{ kPa}\\cdot\\text{K}^{-1}$) are extremely close, with the small variation (approximately $1.3\\%$) being well within the limits of experimental error A1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"compare_ratios","label":"Compare the ratios","steps":[{"type":"text","order":0,"title":"Explain the ratio","content":"If $$\\frac{p_1}{T_1}=\\frac{p_2}{T_2}$$ holds, the ratio $p/T$ must stay constant. The table tests this by calculating $p/T$ for each result. This explanation earns the **M1**.","highlights":[{"text":"\\frac{p_1}{T_1} = \\frac{p_2}{T_2}","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"0.447\\ \\mathrm{kPa\\,K^{-1}}\\leq \\frac{p}{T}\\leq 0.453\\ \\mathrm{kPa\\,K^{-1}}"},{"latex":"\\frac{0.453-0.447}{0.450}\\times 100\\%=1.3\\%"}]},"order":2,"title":"Calculate the variation","description":"Use the listed range and compare its spread with the central value 0.450 kPa K^-1."},{"type":"text","order":3,"title":"State the conclusion","content":"Therefore, the values of $p/T$ fit the equation and are consistent with the relationship, earning B1. The values range only from $0.447$ to $0.453\\ \\text{kPa}\\cdot\\text{K}^{-1}$, a variation of approximately $1.3\\%$. This small variation is well within the limits of experimental error, so the results support a constant ratio and earn A1.","highlights":[{"text":"\\frac{p_1}{T_1} = \\frac{p_2}{T_2}","location":"specification"}]}]}],"generatedAt":"2026-07-22T11:32:52.648Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"18cee428-ee58-4939-8703-19ef3eb1c957","revisionId":"bb03c6f0-6978-463a-a580-671c89a0af31","questionNumber":null,"questionType":"LA","specification":"A micro-capsule on a silicon semiconductor chip is hermetically sealed and contains pressurized neon gas.\n\n![Micro-capsule with pressurized gas](https://assets.mathsgenie.co.uk/aqa-qb/c2dfd67c-0048-4a17-bea0-182f3e9a092c.png)","difficulty":4,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"ea0b6a27-dfdd-4788-9410-f16548f7ae77","label":null,"content":"Describe, in terms of the kinetic theory of gas particles, how the neon gas exerts a pressure on the internal surfaces of the micro-capsule.","markscheme":"- States that the neon gas particles are in continuous, rapid, and random motion. B1\n- Explains that these moving particles collide with the internal walls/surfaces of the micro-capsule. B1\n- States that these collisions exert a force on the surfaces, and the total force per unit area constitutes the gas

Gas pressure and temperature

Question 3

Gas pressure and temperature Questions

Gas pressure and temperature

Question 3

Gas pressure and temperature Questions