This question is about properties of materials - Edexcel - GCSE Chemistry Combined Science - Question 7 - 2016 - Paper 1

To calculate the surface area to volume ratio of a cube, we can use the following formulas:

1. Surface Area (SA) of a cube with side length s:

   $SA = 6s^2$

2. Volume (V) of a cube with side length s:

   $V = s^3$

Given that the length of one side of the cube is 2 cm:

• Surface Area:

  $SA = 6(2)^2 = 6 \times 4 = 24 \text{ cm}^2$

• Volume:

  $V = (2)^3 = 8 \text{ cm}^3$

3. Surface Area to Volume Ratio (SA:V):

   $\text{SA:V} = \frac{SA}{V} = \frac{24 \text{ cm}^2}{8 \text{ cm}^3} = 3 \text{ cm}^{-1}$

Thus, the surface area to volume ratio is 3 cm⁻¹.