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The particle model

The particle model

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Question 1

A student investigates the density of blocks made of different materials.

Each block has dimensions of 4 cm×5 cm×10 cm4\text{ cm} \times 5\text{ cm} \times 10\text{ cm}4 cm×5 cm×10 cm.

a.

Calculate the volume of one block.

[2]
b.

The table below shows the density of four different materials:

MaterialDensity (kg/m3\text{kg/m}^3kg/m3)
Material A650
Material B950
Material C1200
Material D850

Water has a density of 1000 kg/m31000\text{ kg/m}^31000 kg/m3. Identify which of the materials (A, B, C, or D) will sink in water and explain why.

[2]
c.

The student wants to make a lightweight float that sits as high as possible in the water. Suggest which material they should use, and explain your choice.

[2]
d.

Which two microscopic properties of a substance directly determine its macroscopic density?

  • Option 1: Shape of the block
  • Option 2: Mass of the individual particles
  • Option 3: Thermal conductivity
  • Option 4: Arrangement and spacing of the particles
  • Option 5: Color of the material
[2]
Markscheme

The particle model Questions

  1. GCSE
  2. /Physics
  3. /The particle model

29 exam-style questions on OCR GCSE Physics The particle model. Each one has a worked solution and a mark scheme showing where the marks go.

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