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hey frnd!
your answers....
1)a)Density-The degree to which something is dense.Specially classified on the basis of solid,liquid and gas.
density=mass(kg)/volume(m^3).
b)Diffusion-Diffusion is the movement of a substance from a region of higher concentration to a region of lower concentration.
c)Particle motion-Its is referred as the movement of the particles.
2)---
3)a)this is so because the particles of the aroma of food mix with the particles of the air spread from the kitchen ,reach us and even farther away.The smell of hot cooked food reaches us within seconds whereas the cold food doesn't .
b)This is so because naphthalene balls are sublime in nature.With time it directly changes into gaseous form with changing into liquid form.
4)---
hopes this helps!!
your answers....
1)a)Density-The degree to which something is dense.Specially classified on the basis of solid,liquid and gas.
density=mass(kg)/volume(m^3).
b)Diffusion-Diffusion is the movement of a substance from a region of higher concentration to a region of lower concentration.
c)Particle motion-Its is referred as the movement of the particles.
2)---
3)a)this is so because the particles of the aroma of food mix with the particles of the air spread from the kitchen ,reach us and even farther away.The smell of hot cooked food reaches us within seconds whereas the cold food doesn't .
b)This is so because naphthalene balls are sublime in nature.With time it directly changes into gaseous form with changing into liquid form.
4)---
hopes this helps!!
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