Agar cubes can be used to demonstrate the effect of changing surface area to volume ratio on diffusion.
Three different agar cubes made using a dilute acid were placed into an indicator solution that diffused into the cubes. When the indicator came into contact with the acid it changed colour.
The cubes were $1\,c{m^3}\,,\,2\,c{m^3}$ and $3\,c{m^3}$ and were left in the indicator solution for 10 minutes. All other variables were kept the same. The results were recorded as diagrams.
The results for the $2\,c{m^3}$ cube are shown.
Which diagrams represent the results for the $1\,c{m^3}$ and the $3\,c{m^3}$ cubes?
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