Question

` Q. 4 Classify the following substances into mixtures and compoundsWater. Steel. Soft
drinks. Carbon di oxide. Air and Baking sode .

Q5 In which of the following mixture ,path of light rays will be visible? Why?a) salty waterb) sugar in waterc) milk in waterd) lemonade

Q. 6 You are given three beakers, A,B and C. One of these is a solution, other two arecolloidal solution and suspension 2 of 2how will you identify these mixture typesusing Tyndall effect.`

with full explanations
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Answer 1

Answer:

A4-COMPOUNDS--WATER,CARBON DIOXIDE,BAKING SODA.

MIXTURE--STEEL,AIR.

A5-WATER IN MILK BECAUSE IT IS A *COLLOIDAL SOLUTION.

A6-Take a mixture of milk and water which is a colloidal solution. Then, take a mixture of sugar and water which is a true solution. ... From the above-mentioned activity, we can say that the light scattering through a colloidal solution is known as Tyndall scattering and the effect is known as Tyndall effect.

Explanation:

*The definition of a colloid is a combination of molecules mixed through other substances that will not settle out or join with the other substance. Mayonnaise and blood are both examples of colloids.

HOPE IT HELPED YOU...

Answer 2

A Mixture is a substance made up of two or more different chemical substances that are not chemically combined, whereas a Compound is made up of the union of separate elements that are chemically bonded together.

Explanation:

• Water, Carbon Dioxide and Baking Soda are compounds since they are chemically formed substances and show new characteristic properties than their constituent units.
• Steel, Soft Drinks and Air are mixtures since there constituents are not chemically bonded to each other, Furthermore, they retain the properties of their constituent units.

Hence, Water, Carbon Dioxide and Baking Soda are compounds and Steel, Soft Drinks and Air are mixtures.

• Milk is a colloid of microscopic liquid butterfat globules dispersed and suspended in water which are not visible to the naked eye which can easily showcase Tyndall effect (makes the path of light ray visible when passed through it).

Hence, In (c) Milk in water mixture, path of light rays will be visible.

• The Tyndall effect, also known as the Tyndall phenomenon, is the scattering of a light beam by a medium containing microscopic suspended particles such as in a colloid solution.

• Therefore, We will direct a ray of light in each of the beakers. The beakers in which the path of light will be visible will be the colloidal ones and the one in which the path is not visible will be the suspension.