Question

what is osmosis and diffusion...?

Answer 1

Diffusion is the movement of particles (atoms, ionsor molecules) from a region in which they are in higher concentration to regions of lower concentration. A good example of diffusion is food colouring. If you place a drop of red food colouring in a beaker of water eventually the entire beaker of water will have a red tint. The food colouring movedthrough the water until it was equally distributed throughout the beaker. Diffusion takes place along aconcentration gradient. A concentration gradient exists until the diffused substance is evenly distributed.Other everyday examples of diffusionare:
1. Sugar will diffuse through tea until the entire cup of tea is sweet. (We stir the tea to speed up the diffusion.)
2. The odour of food cooking diffuses throughout the kitchen. If you open the kitchen door it willspread into the next room.Themovementof these molecules is said to bepassive. No energy is needed to be provided. The natural kinetic energy of the particles supplies the energy.Examples of diffusionin science are:
1. Carbon dioxide entering the stomata of leaves.
2. Oxygen diffusing out of the stomata and lenticels of leaves.

Answer 2

i hope it helps u ....