Advertisement Remove all ads

Concept of Mixture

Advertisement Remove all ads

Topics

description

  • Mixture
  • General Properties of Mixtures
  • Examples of Mixtures
  • Types of mixture: Homogeneous mixture and Heterogeneous mixture

definition

  • Mixture: Mixtures are formed when two or more substances mixed together without participating in a chemical change.
  • Homogeneous Mixtures: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. Example: salt in water.
  • Heterogeneous Mixture: A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. Eg. Vegetable soup.

notes

Mixture:

  • Mixtures are formed when two or more substances mixed together without participating in a chemical change.
  • In simple words, a mixture is a material made up of two or more different substances which are physically combined.

Examples of Mixtures:

  1. Oil and water
  2. Potassium nitrate, sulfur, and carbon (Gunpowder)
  3. Minerals, organic materials, air, water, and living organisms (Soil)

General Properties of Mixtures:

  • A mixture is a combination of two or more substances that are not chemically combined.
  • No chemical change happens when a mixture is made. So, each substance has the same chemical makeup it has before the mixture was formed.
  • A mixture is a physical change.
  • Each substance in a mixture keeps its identity.
  • The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation.

Types of mixture:

1) Homogeneous Mixtures:

  • Homo means same
  • A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.
  • Example: salt in water.
  • It has a uniform composition and it can’t be separated out physically.

2) Heterogeneous Mixture:

  • Hetero means different
  • A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. Eg. Vegetable soup.
  • It has a non-uniform composition and it can be separated out physically.

Then is air homogeneous or heterogeneous?

It is homogeneous because as its constituents quickly mix in with the other constituents to become uniform (clearly, we do not see different layers of its components)

Example

List the points of differences between homogeneous and heterogeneous mixtures with examples.

Sr. No. Homogeneous mixture Heterogeneous mixture
1 All the components of the mixture are uniformly mixed. All the components of the mixture are not thoroughly mixed.
2 No separation boundaries are visible. Separation boundaries are visible.
3 It consists of a single phase. It consists of two or more phases.
4 Example: Sugar dissolved in water Example: Air, sand, and common salt.
If you would like to contribute notes or other learning material, please submit them using the button below.

Shaalaa.com | Homogeneous mixture and Heterogeneous mixture

Shaalaa.com


Next video


Shaalaa.com


Homogeneous mixture and Heterogeneous mixture [00:01:24]
S
Series: Homogeneous mixture and Heterogeneous mixture
0%


Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×