Class 9 Is matter around us pure notes.
In, this post, we will see class 9th chapter 2. Is Matter Around us Pure?
In this post, of is matter around us pure we will study:-
- What is a pure substance?
- What is a Mixture?
- What is a Solution?
- Properties of a Solution.
- The concentration of a Solution.
- What is a suspension?
- What is colloidal Solution?
- Property of a Colloid.
- Separation of Mixture ( Excluded from our new syllabus)
Notes of is matter around us pure
Pure Substance
According to science if any substance is pure it means all the constituent particles of that substance are the same in there chemical
composition.
What is a mixture?
Mixtures are made up of more than one kind of pure form of matter.
Mixtures can easily be separated by the physical process but Pure substance cant not separated anymore from the physical process.
Examples of mixtures are:- Mixture of sugar in water, Soft drink, Soil , etc.
Type of Mixture.
On the basis of the nature of the component that forms the mixture, we can have many types of mixture.
What is a solution?
A solution is a Homogeneous mixture of two or more substances.
We can see many types of solutions in our daily life.
Ex:- Lemond, soda water, etc.
We can have a water solution, solid to a liquid solution,
Alloys are also Examples of a solution.
Property of Solution
- Solutions are the homogeneous Mixtures.
- The particles of a solution are really really small which is (10^-9 meter ) 1nm meter in diameter.
- They can be not seen by naked eyes.
- They do not scatter beam of light.
- By the process of filtration solute, particles can't be separated.
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