BI-1750
Diffusion
Biology · Secondary 4 · Medium · Diffusion
A student investigates diffusion by placing a drop of blue dye in the centre of a beaker of still water. After 30 minutes, the water is evenly light blue. Which statement best explains this observation?
- Dye particles move from higher to lower concentration until evenly spread
- Water particles move from lower to higher concentration of dye only
- Dye particles move only when stirred with a glass rod
- Gravity pulls the dye particles evenly through the water
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.