Question

For the mixing of salt water and blue food colouring in beaker 1 mixed with fresh water and yellow food colouring in beaker 2. From 2.5 to 9 minutes the zone of mixing should be gradually becoming thicker, although you may not able to easily observe this.what process is causing this slow mixing?

Answer 1

The process causing the slow mixing and gradual thickening of the zone of mixing is diffusion. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, resulting in the equal distribution of substances throughout a mixture. In this case, the salt water and blue food coloring in beaker 1 and the fresh water and yellow food coloring in beaker 2 are gradually diffusing into each other, leading to the thickening of the zone of mixing over time.