/edexcel/questions","basePath":"/gcse/physics/edexcel/density-and-states-of-matter/questions","formulaUrl":null,"initialIndex":75,"initialQuestionWindow":[{"id":"e70f5d27-3a01-4dd1-a1ab-37240c6a28d4","revisionId":"febf5646-b7dc-4fbe-8e79-422b453de03b","questionNumber":null,"questionType":"LA","specification":"","difficulty":3,"difficultyBand":"easy","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"e6409494-46c2-403e-a537-3687adecffe5","label":null,"content":"A silver ring has a mass of $14.7 \\text{ g}$.\n\nThe density, $\\rho$, of silver is $10.5 \\text{ g/cm}^3$.\n\nCalculate the volume of the silver ring.\n\nUse the equation\n\n$$\\rho = \\frac{m}{V}$$","markscheme":"- Rearranges the density equation to make volume ($V$) the subject: $V = \\frac{m}{\\rho}$ M1\n- Substitutes the given values of mass and density into the rearranged equation: $V = \\frac{14.7}{10.5}$ M1\n- Calculates the final volume to get $1.4 \\text{ cm}^3$ A1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"rearrange_density","label":"Rearrange the density equation","steps":[{"type":"text","order":0,"title":"Identify the quantities","content":"The mass is $m=14.7\\text{ g}$ and the density is $\\rho=10.5\\text{ g/cm}^3$. We need the volume $V$, so the answer unit will be $\\text{cm}^3$.","highlights":[{"text":"A silver ring has a mass of $14.7 \\text{ g}$.","location":"specification"},{"text":"The density, $\\rho$, of silver is $10.5 \\text{ g/cm}^3$.","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"\\rho=\\frac{m}{V}"},{"text":"First clear the denominator, then divide by density."},{"latex":"\\rho V=m"},{"latex":"\\htmlData{anchor=volume-final}{V=\\frac{m}{\\rho}}"}],"highlights":[{"color":"sky","style":"box","anchor":"volume-final"}]},"order":2,"title":"Make volume the subject","description":"Rearrange the density equation so that volume is alone. This earns the first method mark."},{"type":"hyper_latex","block":{"nodes":[{"latex":"V=\\frac{m}{\\rho}"},{"latex":"V=\\htmlData{anchor=substitution}{\\frac{14.7}{10.5}}"},{"latex":"V=\\htmlData{anchor=answer}{1.4\\ \\mathrm{cm^3}}"}],"highlights":[{"color":"amber","style":"box","anchor":"substitution"},{"color":"green","style":"box","anchor":"answer"}]},"order":3,"title":"Substitute and calculate","description":"Substitute the given values, then divide. The substitution earns the second method mark; the final value earns the final mark."}]}],"generatedAt":"2026-07-22T11:42:09.968Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"e7107ba0-b68a-4a6e-b14c-c1cea5164122","revisionId":"0999379c-b5bd-4c89-ad45-92217883ec31","questionNumber":null,"questionType":"LA","specification":"A student wants to measure the volume of an irregular piece of cork using a displacement can (Eureka can) filled with water.\n\nThe density of the cork is $0.24 \\text{ g/cm}^3$.\n\nThe density of water is $1.00 \\text{ g/cm}^3$.","difficulty":5,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"fb81b7a2-bb59-433e-9083-951bb48c6b1d","label":null,"content":"Explain why this displacement method cannot be directly used to determine the volume of the piece of cork.","markscheme":"- States that the cork will float because its density is less than the density of water (or $0.24 \\text{ g/cm}^3 < 1.00 \\text{ g/cm}^3$) B1\n- Explains that because it floats, it is not fully submerged, so the volume of water displaced is less than the actual volume of the cork B1","marks":2,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"compare_densities","label":"Compare the densities","steps":[{"type":"text","order":1,"title":"Compare the densities","content":"The cork has density $0.24\\ \\text{g/cm}^3$ and the water has density $1.00\\ \\text{g/cm}^3$. Since $0.24 < 1.00$, the cork is less dense than water, so it **floats**.\n\nThis compar

Density and states of matter

Question 48

Density and states of matter Questions

Density and states of matter

Question 48

Density and states of matter Questions