NCERT Solutions Class 9 Science - Chapter 2 Is Matter Around Us Pure - PDF Download

NCERT Solutions for class 9 science chapter 2 Is matter around us pure provides detailed answers and explanation to the exercise questions in the chapter. Even minute details are covered in the chapter which will help students to clear all their doubts. eSaral’s NCERT Solutions are very helpful for all students as it covers the whole syllabus and focuses mainly on basics to help students with the basic concepts.

The second chapter of the science syllabus of Class 9 Science is based on various types of matter. The definition and examples of various types of matter are provided in this chapter. Features of various substances are discussed and compared in detail.

NCERT Solution Class 9 science Chapter 2 will help students to develop conceptual understanding of the new concepts. You can download NCERT solution for class 9 science Chapter 2 pdf by eSaral for free. Reading NCERT Solutions to is matter around us pure class 9 PDF right after learning this chapter will help students to understand the topics covered more effectively.

NCERT Solutions for Class 9 Science Chapter 2 Topics

2.1 What is a Mixture?: A mixture is an arrangement of substances that are physically composed of one or more elements, each with its own unique characteristics and properties. A mixture is simply a combination of substances without any chemical reactions taking place. Mixtures may be composed of elements, compound substances, or a mixture of both.

Subtopics covered in the section 2.1 What is a Mixture?:

2.1.1 Types of mixtures

2.2 What is a Solution?: A solution is a homogeneous mix in which a single substance (solute) is evenly distributed and mixed with another substance (solvent). Particles of the solute in a solution are so fine-grained and dispersed in the solvent that they are not visible to the eye. Solutions are common in our daily lives and play an important role in many scientific, industrial and practical applications.

Subtopics covered in the section 2.2 What is a Solution?:

2.2.1 Concentration of a solution

2.2.2 What is a suspension?

2.2.3 what is a colloidal solution?

2.3 Physical and Chemical Changes: There are two main ways matter can change. These are physical and chemical changes. Physical changes involve changes in the shape, size, and composition of things.

2.4 What are the Types of Pure Substances?: Pure substances are substances that are chemically stable and have the same properties all over. Basically, there are two main kinds of pure substances - elements and compounds.

Subtopics covered in the section 2.4 What are the Types of Pure Substances?: 

2.4.1 Elements

2.4.2 Compounds

Key Features of Class 9 Science Chapter 2

• Matter is divided into two primary categories: pure substances and mixtures. 

• Pure substances are further subdivided into elements and compounds, with elements being substances that cannot be decomposed into simpler substances through chemical means. 

• Compounds are substances that combine two or more elements in a fixed ratio. Mixtures are substances that are physically mixed and can be separated using physical methods. 

• There are two types of mixtures: homogeneous mixtures, also known as solutions, which are composed of components that are uniformly distributed, and heterogeneous mixtures, which are not homogeneous and can be viewed as distinct phases. 

• The properties of pure substances and compounds are fixed, while the properties of mixtures are a combination of those of the components.

• The separation of mixtures is achieved through a variety of techniques, such as filtration and distillation; evaporation and chromatography; and crystallization. 

• Physical changes and chemical changes involve the alteration of the chemical composition of the material, as well as the formation of novel substances with varying properties as a result of chemical reactions. 

• Pure substances and impurities are subject to the influence of pressure and temperature, with melting points and boiling points being characteristic properties that are affected by these processes.

Benefits of Downloading the PDF of NCERT Solutions Class 9 Science Chapter 2 Is Matter Around Us Pure

Students can benefit from downloading the PDF of the NCERT solutions for Chapter 2 of Class 9 Science, "Is Matter around Us Pure?" for various reasons, such as convenience, ease of access, and comprehensive understanding. 

• The solutions are arranged in a systematic manner, following the order of the textbook, allowing students to easily follow the flow of the chapter. 

• Additionally, the explanations are concise and clear, making it easier to comprehend complex concepts. 

• The solutions include step-based solutions for numerical problems, as well as logical explanations for theoretical questions. 

• Furthermore, the solutions are designed to conform to the textbook and examination pattern, allowing students to effectively prepare for exams and achieve high scores.

• The solutions provide a variety of problems and exercises to help students practice and improve their problem solving skills.

• After students have tried their own questions, they can use solutions to evaluate their performance and see where they can improve.

• The solutions can be used to help students complete their homework assignments, making sure they are accurate and giving them guidance when they need it.

• If students have any doubts while studying a particular chapter, solutions can help to clarify their doubts and give them a better understanding of the topic.

Frequently Asked Questions

Question 1: What is the difference between a pure substance and a mixture?

Answer 1: A pure substance is made up of only one element or combination of elements, with a homogeneous composition. A mixture is made up of two or more elements that are chemically mixed together but retain their individual characteristics.

Question 2: What are the two types of pure substances?

Answer 2: Elements and compounds are two distinct categories of pure substances. Elements are composed of a single type of atom, and cannot be decomposed chemically. Compounds, on the other hand, are composed of either two elements or more elements in a fixed ratio.