Unit - 10 Mixture

 Unit - 10

Mixture

summary

1. A mixture of two or more substances is called a mixture.

2. Inhomogeneous mixtures and homogeneous mixtures according to the state of the ingredients in the mixture There are two types.

3. A mixture in which the components are uniformly mixed is called a mixture.

It is called equal mixture.

4. A mixture in which the components are uniformly mixed is called a mixture. It is called unequal mixture.

5. By removing unnecessary and harmful substances from the mixture, a useful and pure substance is obtained The mixture is separated.

6. Separation of mixtures A method of separating the components in a mixture from each other

It is called (Kabhaubachbatsyal or Mashhatagachabha).

7. Inhibits the accumulation of water-insoluble substances on the surface of the vessel It is called (Kabhamashmbhalatbatsyal).

8. Separation of insoluble substances from liquids by means of fine-pored objects

The method is called selection method.

9. A method of separating a mixture of light and heavy solids by means of air

Nifanne (Dashlalaydhashlan) is called Vriya.

3. Write the answers to the following questions:

  (a) What is mixture? How many types of mixtures are there?

  (b) List the methods for separating insoluble matter from liquid matter.

  (c) Write any three reasons for separating the mixture.

Answer 👉 

(a) A mixture is a physical combination of two or more substances that are not chemically combined. The substances in a mixture retain their own chemical identities and properties. Mixtures can be classified as homogeneous or heterogeneous.

• Homogeneous mixtures are mixtures in which the components are evenly distributed throughout the mixture. Examples of homogeneous mixtures include salt water, air, and milk.
• Heterogeneous mixtures are mixtures in which the components are not evenly distributed throughout the mixture. Examples of heterogeneous mixtures include sand and water, salad, and chocolate chip cookies.

(b) There are several methods for separating insoluble matter from liquid matter. Some of the most common methods include:

• Filtration is a process that uses a filter to remove solid particles from a liquid. The filter allows the liquid to pass through, but it traps the solid particles.
• Centrifugation is a process that uses a centrifuge to spin a mixture at high speed. The centrifugal force causes the solid particles to settle to the bottom of the container, while the liquid remains at the top.
• Decanting is a process that uses gravity to separate a liquid from a solid. The liquid is poured off the top of the container, leaving the solid behind.

(c) There are many reasons why you might want to separate insoluble matter from liquid matter. Some of the most common reasons include:

• To remove impurities from a liquid. For example, you might want to remove dirt or sand from water.
• To concentrate a liquid. For example, you might want to remove water from a solution of salt.
• To recycle a liquid. For example, you might want to remove oil from used motor oil.