NCERT Solutions For Class 9 Science Chapter 2: Is Matter Around Us Pure? is the second chapter in Class 9 Science textbook. It covers important concepts that kids need to learn before proceeding on to the next chapters. After reading and understanding the chapter, students must also solve the questions in this chapter in order to understand the concepts better. Embibe provides NCERT Solutions of Class 9 Science Chapter 2 which you can download and study offline. These solutions are prepared by our academic experts. They have solved all the Class 9 Science Chapter 2 Exercise Questions present in NCERT Books for Class 9. Read this article to find out NCERT Solution Class 9 Chapter 2 Science.
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NCERT Solutions For Class 9 Science Chapter 2: Is Matter Around Us Pure?
Before getting into the detailed NCERT Solution Class 9 Science Ch 2, let’s have an overview of topics and subtopics included in the Is Matter Around Us Pure? chapter. The different topics covered in this chapter are tabulated below. Click on any topic name to download the solutions as a PDF.
|2.1||What is a Mixture?|
|2.2||What is a Solution?|
|2.3||Separating the Components of a Mixture|
|2.4||Physical and Chemical Changes|
|2.5||What are the Types of Pure Substances?|
Chapter 2 Science Class 9 NCERT Solutions: Solved Exercises & In-Text Questions
The solutions for Science Chapter 2 Class 9 provided here on Embibe are solved by experts in an easy-to-understand language for all CBSE Class 9 students. Thus, students can grasp all the concepts easily.
- Chapter 1: Matter in Our Surroundings
- Chapter 3: Atoms and Molecules
- Chapter 4: Structure of Atoms
- Chapter 5: The Fundamental Unit of Life
- Chapter 6: Tissues
- Chapter 7: Diversity in Living Organisms
- Chapter 8: Motion
- Chapter 9: Force and Laws of Motion
- Chapter 10: Gravitation
- Chapter 11: Work and Energy
- Chapter 12: Sound
- Chapter 13: Why Do We Fall Ill
- Chapter 14: Natural Resources
- Chapter 15: Improvement in Food Resources
CBSE Class 9 Science Chapter 2 Questions And Answers: Chapter Summary
In this chapter, you will learn about mixtures, solution, heterogeneous mixture, colloids and their uses, pure substances, compound, etc. A pure substance consists of a single type of particle. Mixtures contain more than one kind of pure form of matter. A solution is a homogeneous mixture of two or more substances.
FAQs on NCERT Solutions For Class 9 Science Chapter 2
Here we have provided some of the frequently asked questions related to Class 9 Chapter 2 Science Solution:
|Q1: Differentiate between homogenous and heterogeneous mixtures with examples |
A: The differences between homogenous and heterogeneous mixtures are tabulated below:
|Q2: What type of mixtures are separated by the technique of crystallization?|
A: The technique of crystallization is used to separate solids from a liquid solution.
|Q3: To make a saturated solution, 36g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.|
A: Mass of solute (NaCl) = 36 g
Mass of solvent (H2O) = 100 g
Mass of solution (NaCl + H2O) = 136 g
Concentration = Mass of solute/Mass of solution x 100
Concentration = 36/136 x 100 = 26.47%
Hence, the concentration of the solution is 26.47%
|Q4: Name the techniques used to separate the following:|
(i) Butter from curd.
(ii) Salt from seawater
(iii) Camphor from salt
A: i) To separate butter from curd, a process called centrifugation is used. The process is governed by the principle of density.
ii) We can use the simple evaporation technique to separate salt from seawater. Distillation causes water to evaporate leaving solid salt behind, hence the production of salt.
iii) Sublimation can be used to separate camphor from salt as, during the phase change, camphor does not undergo a liquid phase.
|Q5: Classify each of the following as a homogeneous or heterogeneous mixture.|
soda water, wood, air, soil, vinegar, filtered tea.
A: The materials are classified as follows:
|Q6. Give some examples of pure substances or mixtures that we use in our daily lives?|
A. Some examples of the substances we use in our daily lives.
Pure substances—Water, bread, sugar and gold.
Mixtures—Steel, plastic, paper, talc, milk and air.
|Q7. What is the definition of Saturated solution, Pure substance, Colloid and Suspension?|
A. Saturated solution: In a given solvent, no solute that can dissolve further at a given temperature is called a saturated solution.
Pure substance: When a single type of particles comprises an element, it is a pure substance. E.g., silver, gold.
Colloid: A solution in which the size of solute particles is more significant than a proper solution. These kinds of particles cannot be seen with our naked eyes. e.g., ink, blood.
Suspension: A heterogeneous mixture in which the solute particles are large enough to settle down, e.g., chalk-water, paints, etc.
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