SC-391
Diffusion
Lower Sec Science · Secondary 1 · Medium · Diffusion
A student places a drop of blue ink in the centre of a beaker of still water. After 30 minutes, the whole beaker of water is light blue. Which statement best explains this observation using the particle model?
- Ink particles are heavier, so they sink to the bottom.
- Water particles move towards the ink, pushing it outwards.
- Ink particles move randomly from high to low concentration until evenly spread.
- Heat from the room causes convection currents that mix the ink.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.