GCSE Edexcel Physics Combined Science Density ρ: a) Complete each box in Figure 1

Question

a) Complete each box in Figure 1 to show how particles are arranged in a solid, liquid and gas. One particle in each box has been drawn for you.

Figure 1

(i) In the solid box: regular arrangement and particles touching.
In the liquid box: irregular arrangement and most particles touching.
In the gas box: random and spaced (compared to liquid).

(ii) Which row of the table is correct for water compared to steam?

|                     | the density of water is | the water molecules are |
|---------------------|------------------------|------------------------|
| A                   | bigger                 | smaller                |
| B                   | smaller                | bigger                 |
| C                   | bigger                 | closer together        |
| D                   | smaller                | further apart          |

(b) A student investigates the density of a copper block and the density of a small stone, as shown in Figure 2.

Figure 2

(i) The student calculates the volume of the block as 13 cm³. She finds that the mass of the block is 100 g. Calculate the density of the block. 
Use the equation
density = mass / volume

a) Complete each box in Figure 1 to show how particles are arranged in a solid, liquid and gas - Edexcel - GCSE Physics Combined Science - Question 1 - 2016 - Paper 1

Worked Solution & Example Answer:a) Complete each box in Figure 1 to show how particles are arranged in a solid, liquid and gas - Edexcel - GCSE Physics Combined Science - Question 1 - 2016 - Paper 1

Complete each box in Figure 1 to show how particles are arranged in a solid, liquid and gas.

Which row of the table is correct for water compared to steam?

Calculate the density of the block.

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