/edexcel/questions","basePath":"/gcse/physics/edexcel/density-and-states-of-matter/questions","formulaUrl":null,"initialIndex":66,"initialQuestionWindow":[{"id":"d46a13da-ed09-4b17-9efa-a29fbf007659","revisionId":"619c5935-ef04-4822-a6fe-54798b5765c7","questionNumber":null,"questionType":"LA","specification":"A student has obtained a small, jagged fragment of an iron-nickel meteorite with an irregular, pitted surface of length approximately 3 cm.\n\nThe student wants to determine the density of this meteorite fragment.\n\nThe student uses a high-precision digital balance to measure the mass of the fragment.","difficulty":3,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"21c62192-a868-4845-9fa7-d9d1bccaa9d2","label":null,"content":"Explain how the student could measure the volume of this irregular meteorite fragment.","markscheme":"- Pour water into a measuring cylinder and record the initial volume (or fill a Eureka/displacement can with water until it is level with the bottom of the spout and place an empty measuring cylinder under the spout) M1\n- Submerge the meteorite fragment completely in the water, lowering it gently (e.g. using a thin thread) to prevent splashing M1\n- Record the final volume and subtract the initial volume to find the volume of the fragment (or measure the volume of the displaced water collected in the measuring cylinder), ensuring the scale is read at eye level to the bottom of the meniscus A1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"d4f27f3b-9f06-4ca0-b39a-efecbe2d545b","revisionId":"6e74eccf-62df-4473-9a23-0c5fb3ded0c1","questionNumber":null,"questionType":"LA","specification":"An industrial blending vat has a flat, rectangular base with dimensions of $3.2\\text{ m}$ by $2.5\\text{ m}$. It is filled with liquid chocolate to a depth of $1.2\\text{ m}$.\n\nThe density of liquid chocolate is $1300\\text{ kg/m}^3$ and the gravitational field strength, $g$, is $9.8\\text{ N/kg}$.","difficulty":5,"difficultyBand":"medium","totalMarks":4,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"6f2d0f0d-fa5a-4766-b24e-4b44b73268d0","label":null,"content":"Calculate the weight of the liquid chocolate in the vat. Give your answer to 3 significant figures.","markscheme":"- Calculates the volume of the liquid chocolate: $\\text{Volume} = 3.2\\text{ m} \\times 2.5\\text{ m} \\times 1.2\\text{ m} = 9.6\\text{ m}^3$ (or calculates the base area: $3.2\\text{ m} \\times 2.5\\text{ m} = 8.0\\text{ m}^2$) M1\n- Calculates the mass of the chocolate: $\\text{Mass} = 1300\\text{ kg/m}^3 \\times 9.6\\text{ m}^3 = 12480\\text{ kg}$ (or calculates hydrostatic pressure at the base: $p = 1.2\\text{ m} \\times 1300\\text{ kg/m}^3 \\times 9.8\\text{ N/kg} = 15288\\text{ Pa}$) M1\n- Calculates the weight: $\\text{Weight} = 12480\\text{ kg} \\times 9.8\\text{ N/kg} = 122304\\text{ N}$ (or calculates the downward force: $F = 15288\\text{ Pa} \\times 8.0\\text{ m}^2 = 122304\\text{ N}$) M1\n- Rounds correctly to 3 significant figures to give $122000\\text{ N}$ (or $1.22 \\times 10^5\\text{ N}$) A1","marks":4,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"volume_mass_weight","label":"Volume, mass then weight","steps":[{"type":"drawing","order":0,"title":"Visualise the chocolate","width":723,"height":474,"shapes":[{"id":"poly-1","type":"line","color":"black","points":[{"x":118.5,"y":431.8},{"x":545.2,"y":431.8},{"x":678.5,"y":298.5},{"x":251.8,"y":298.5},{"x":118.5,"y":431.8}]},{"id":"poly-2","type":"line","color":"black","points":[{"x":118.5,"y":271.8},{"x":545.2,"y":271.8},{"x":678.5,"y":138.5},{"x":251.8,"y":138.5},{"x":118.5,"y":271.8}]},{"id":"seg-AE","type":"line","color":"black","points":[{"x":118.5,"y":431.8},{"x":118.5,"y":271.8}]},{"id":"seg-BF","type":"line","color":"black","points":[{"x":545.2,"y":431.8},{"x":545.2,"y":271.8}]},{"id":"seg-CG","ty

Density and states of matter

Question 26

Density and states of matter Questions

Density and states of matter

Question 26

Density and states of matter Questions