Last seen: Nov 14, 2021
(a) When air is blown the particles in air pushes the tyre walls from inside and exerts a pressure on them. (b) Steel is used to make railway lines...
Honey is more viscous than water because the force of attraction between the particles of honey is much more than that of the force of attraction of p...
When a crystal of copper sulphate is placed at the bottom of a beaker containing water, the water slowly turns blue because of the diffusion of copper...
The particles of perfume start diffusing around the air and moves from lower concentration by virtue of their kinetic energy.
The smell of food being cooked reaches us even from a considerable distance is because of the process of diffusion.
The rate of diffusion of a hot gas is faster than the cold gas. So the particles have greater kinetic energy when the gas is hot and moves faster.
(a) Diffusion of gases tells us that the matter comprises of tiny particles and has space between them. The particles of matter are in constant motion...
(a) Diffusion is the process involved in this as the fragrance quickly spreads in the entire room. (b) The smell of food being cooked reaches the o...
(a) (i)Water has fixed volume but no fixed shape. (ii) Water flows freely. (b) (i) The iron almirah has fixed shape and volume. (ii) Particles...
Oxygen < Water < Sugar Oxygen has minimum force of attraction as it is a gas and then water and then sugar.
(i) Solids – They have a fixed shape and a fixed volume. (ii) Liquids – They have a fixed volume but no fixed shape. (iii) Gases – They neither ...
Gases do not have a fixed shape or volume so that the particles are freely moving. They do not have a fixed position or spaces between them.
Solid: 1. It has strong intermolecular force of attraction between particles 2. It has definite shape and volume Liquid: 1. It does not ha...
(i) The solid state – Ice. (ii) The liquid state – Water. (iii) The gas state – Air.
The fragrance of incense stick spreads quickly because the particle moves continuously in all directions. Both the air and fragrance have large interm...
Solids diffuse the slowest as the particles in solids do not move from their fixed positions. Gases diffuse the fastest as the particles in gases m...
Diffusion is a slow process in solids because the particles do not move from their fixed positions and only vibrate.
Diffusion of solid into another solid is an extremely slow process because the particles do not move from the fixed positions and they vibrate. When t...
There will be a weak force of attraction between the particles in air. So we can move our hands on air whereas the particles in solid plank are closel...
Salt when dissolves in water the tiny particles occupy the spaces between the water particles and mix with them, thus gives a taste to water. There wo...