Physics (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Physics — Foundation · Specification point · 6.3.1.1 · Particle model of matter · Changes of state and the particle model
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6.3.1.1 Density of materials
| Content | Key opportunities for skills development |
|---|---|
The density of a material is defined by the equation: |
density, ρ, in kilograms per metre cubed, kg/m³
mass, m, in kilograms, kg
volume, V, in metres cubed, m³
The particle model can be used to explain
MS 1a, b, c, 3b, c Students should be able to recall and apply this equation to changes where mass is conserved. |
Students should be able to recognise/draw simple diagrams to model the difference between solids, liquids and gases. | WS 1.2 |
Students should be able to explain the differences in density between the different states of matter in terms of the arrangement of atoms or molecules. | WS 1.2 |
Required practical activity 17: use appropriate apparatus to make and record the measurements needed to determine the densities of regular and irregular solid objects and liquids. Volume should be determined from the dimensions of regularly shaped objects, and by a displacement technique for irregularly shaped objects. Dimensions to be measured using appropriate apparatus such as a ruler, micrometer or Vernier callipers.
AT skills covered by this practical activity: physics AT 1.
This practical activity also provides opportunities to develop WS and MS. Details of all skills are given in Key opportunities for skills development (page 187).