Particles in a liquid and a gas move continuously. Because of this movement, particles will spread themselves evenly throughout a liquid or a gas. If a crystal of a coloured chemical, eg potassium ...

We construct a modified Arratia flow with mass and energy conservation. We suppose that particles have a mass obeying the conservation law, and their diffusion is inversely proportional to the mass.

This article brings you the CBSE Class 9 Science notes for Chapter 1 - Matter in Our Surroundings. These chapter notes are prepared by the subject experts and cover every important topic from the ...