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Learning objective

Outline the methods for measuring the density of a liquid, a solid with a regular shape, and a solid with an irregular shape that sinks in a liquid (using volume displacement), including necessary calculations.

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Cambridge IGCSE Combined ScienceMotion, forces and energyCore contentPractical objective

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Quick explanation

Outline the methods for measuring the density of a liquid, a solid with a regular shape, and a solid with an irregular shape that sinks in a liquid (using volume displacement), including necessary calculations

  • This point belongs to Density, especially Density outcomes.
  • You need to be able to outline the methods for measuring the density of a liquid, a solid with a regular shape, and a solid with an irregular shape that sinks in a liquid (using volume displacement), including necessary calculations.
  • The key ideas to know are Describe, Demonstrate, and Determine.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeDemonstrateDetermineCalculate

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Paper 6 structured question: Density

Paper 6Alternative to PracticalPractical1 marks

Method

Density Measurement Method

To measure the density of a liquid, use a graduated cylinder to find the volume and a balance to find the mass. For a regular solid, calculate the volume using geometric formulas. For an irregular solid, submerge it in water and measure the volume of water displaced.

  1. a

    State the method used to measure the volume of an irregular solid.

    Aim for approximately 1 distinct marking point.

    [1]
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