How is a mixture different from a compound?​

MIXTURE

1 In a mixture two or more substances are mixed together (elements or compounds)

2Therd is no fixed proportion of the constituents

3 The mixture may or may not be homogenous

4 There is no chemical reaction between the constituent substances

5 There cannot be a chemical formula for a mixture

6 Heat or any other type of energy is not required or released during the formation of a mixture

7 The constituents can be separated using simple physical processes

8 The properties of the constituents are retaied

COMPOUND

1 Two or more elements form a compound

2 The constituent elements combine in a definite proportion to form a compound

3 The elements are in a definite proportion in any part or fraction of the compound

4 There is a chemical reaction in the formation of a compound

5 A compound has always a chemical formula for a compound

6 Heat orany other energy is often required for the formation of a compound or released during the formation of a compound

7 The constituent elements can't be separated using simple physical processes in case of a compound

8 The properties of the constituent elements are not retained in the compound

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.