Question

why when blue ink dropped in water and the water turn blue

Answer 1

hey user
here's your answer
the particles of blue ink get into the spaces between water molecules. therefore the water turns blue.
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Answer 2

1) The drop of blue ink diffuses in water and thus the colour of solution becomes blue.In other words, the particles of blue ink mix with particles of water and the resultant solution is blue in colour.

2) The intermolecular spaces between gas molecules are large and due to negligible intermolecular attraction these molecules move in a random motion with high speed.Due to this gases diffuse fast.

8) Potassium permanganate crystals put in hot water mixes faster than in cold water because rate of diffusion increases with the increases in temperature.This is due to the increase in the energy and thereby speed of the of the particles with increase in temperature.