NCERT Solutions for Class 10 Science Chapter 1, Chemical Reaction and Equations Question Answer -

Q: 1 What are the important questions of chapter 1 of Class 10 Science?

Ans. What is a chemical change / What is a Physical Change? What do you mean by a chemical reaction? What are the different types of Chemical reactions? What is a neutralisation reaction? What do you mean by double displacement reaction? Give an example of Decomposition reaction? What is the meaning of the combination reaction? Write in brief about the endothermic reaction. Explain with an example, the meaning of exothermic reaction. What is the meaning of redox reaction? What is a single Displacement reaction? Give an example. What are the steps to write a chemical equation?

Table of Contents

Class 10 science is an important subject from the examination as well as application point of view. The first chapter of any subject is important as it provides with the fundamental concept and knowledge required to understand the rest of the chapters and topics. For this purpose, we have provided students with the NCERT solutions of class 10 science chapter 1 named Chemical Reaction and Equation. Our subject experts have given a detailed explanation of important questions, exercise questions along with their notes.

NCERT Solutions for Class 10 Science Chapter 1, Chemical Reaction and Equations

Adda247 provides NCERT Solutions for Chapter 1 of Science of Class 10th, Chemical Reaction and Equation. The NCERT Solutions provided here will enhance the concepts of the students, as well as suggest alternative methods to solve particular problems to the teachers.

Chemistry is much more than the language of Science. We aim to aid the students with answering the questions correctly using logical approach and methodology. The Class 10 Science NCERT Solutions for Chapter 1, Chemical Reaction and Equation provide ample material to enable students to form a good base with the fundamentals of the subject.

Class 10 board examination is the most crucial exam in every student’s life. Their future studies and career depend on the mark secured in the board exams. Every student works hard to score well in class 10 CBSE examinations. Science among all the subjects of class 10 has a vital role in every student’s career. Science teaches us how the world and our environment is made. The students can secure better marks in the science subject if they want to become a doctor or an engineer in future. It is important that they should prepare and study hard for this subject so they don’t lose marks.

Read: NCERT Solutions Class 10 Science

NCERT Solutions for Class 10 Science Chapter 1 Pdf Download

For the students in Class 10 Science is a great book to refer to. The Class 10 Science Chapter 1 NCERT Solution, Chemical Reaction and Equations are available chapter-wise at Adda247 and can prove to be very useful for the students. Whether you are struggling to grasp the concepts of various topics in the chapters or willing to push yourself to score better in the exams, NCERT Solutions for Class 10 Science PDF is the answer for you. These solutions are provided in an easy-to-understand language and will promote self-learning among students. The CBSE Class 10 Science Solutions, available for all the chapters, encourage a spirit of learning among students. Can learn all the chapters by following the NCERT Science Class 10 Solutions without even having to step out of their homes.

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While solving the textbook questions, students often find doubts and get confused. The Class 10 Science Chapter 1 NCERT Solutions, Chemical Reaction and Equations come in handy at such times, as they include precise explanations and detailed answers to those questions. These Class 10 Science Chapter 1 NCERT Solutions, Chemical Reaction and Equations cover solutions to all the important chapters included in the textbook-like Matter, Atom, tissues, Living Organisms, Motion, Force, Law of Motion, Gravitation, Energy and work, Sound, Natural Resources, etc.

Class 10 Science Chapter 1 Question Answer

Along with answers to the textbook questions, these solutions provide you with extra questions, exemplar problems, their NCERT Solutions for Class 10 Chapter 1 of Science, Chemical Reaction and Equations as well as tips and tricks.

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CBSE Class 10 Science chapter 1 NCERT Solutions, Chemical Reaction and Equations provides a clear insight into combustion and flame.
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All the topics that can appear in the exams are covered thoroughly in these CBSE Class 10 Science chapter 1 NCERT Solutions, Chemical Reaction and Equations for the students to gain more marks in the examination.

NCERT Solutions Class 10 Science Chapter 1 Notes

A chemical reaction is described by a chemical equation, an expression that gives the identities and quantities of the substances involved in a reaction. A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow.

In mathematic equations we use an equal sign (=) for example 2 + 2 = 4, but in scientific chemical equations, we use an arrow (→), for example C + O2→ CO2. To the left of the arrow, we have the ‘before’ situation. This side represents the substances we have before the reaction takes place. They are called the reactants.

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. … A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Chemical reactions are processes in which reactants become new products. Chemical equations are the symbolic representation of chemical reactions. Helmenstine, Anne Marie, Ph.

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products

Examples of chemical reactions in everyday life include photosynthesis, rust, baking, digestion, combustion, chemical batteries, fermentation, and washing with soap and water. Chemical reactions occur everywhere in the world around you, not just in a chemistry lab.

Chemical equation is the representation of chemical reactions using symbols. Chemical reaction is the process in which one reactant breaks or two or more reactants reacts to form one or more products but chemical equation represents the reaction which had occurred by symbols.

Four basic types

Representation of four basic chemical reactions types: synthesis, decomposition, single replacement and double replacement.

Chemical reactions help us understand the properties of matter. … By observing chemical reactions, we are able to understand and explain how the natural world works. Chemical reactions turn food into fuel for your body, make fireworks explode, cause food to change when it is cooked, make soap remove grime, and much more. The mixing of soap and water is a physical rather than a chemical reaction.

Chemical reaction is just a rearrangement of atoms. It can neither create nor destroyed during the course of a chemical reaction. Chemical equations must be balanced to satisfy the law of conservation of matter that states that matter cannot be produced or destroyed in a closed system.

If a chemical equation is not balanced it implies that either mass has been created or destroyed which is a contradiction to law of conversation of mass which states that matter can neither be created nor destroyed.

A balanced chemical equation has an equal numbers of atoms of different elements in the side of reactants and products. An unbalanced chemical equation has an unequal number of atoms of one or more elements in the reaction.

The characteristics of a chemical reaction are: Evolution of gas, Formation of a precipitate, Change in colour, Change in temperature, Change in state etc. The relationship between the products and reactants in a balanced chemical equation is very important in understanding the nature of the reaction. This relationship tells us what materials and how much of them are needed for a reaction to proceed.

NCERT Solutions for Class 10 Science Chapter 1, Chemical Reaction and Equations: Key Features

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NCERT Solutions of Class 10 Science Chapter 1 Important Questions and Answers

1 What are the important questions of Chapter 1 of Class 10 Science?

Ans.

What is a chemical change ?
What is a Physical Change?
What do you mean by a chemical reaction?
What are the different types of Chemical reactions?
What is a neutralisation reaction?
What do you mean by double displacement reaction?
Give an example of Decomposition reaction?
What is the meaning of the combination reaction?
Write in brief about the endothermic reaction.
Explain with an example, the meaning of exothermic reaction.
What is the meaning of redox reaction?
What is a single Displacement reaction? Give an example.
What are the steps to write a chemical equation?

2 What is a chemical reaction?

Ans. When one or more chemicals react and produce one or more substances as a product, this is known as a chemical reaction. Reactants react in such a form that they are chemically combined in order to find a new compound. Chemical elements or compounds can be produced as a result of this process. The atomic composition of the reactant changes when it undergoes a chemical reaction, resulting in the formation of new material.

3 What is a chemical change?

Ans. A chemical change occurs when one or more new compounds with differing physical and chemical characteristics are created. If two elements react with each other to form a new compound. Both elements individual properties are lost. The resultant compound has its own new properties which can be similar to the reactants or completely different. In most cases, this sort of alteration is irreversible and permanent. When iron interacts with CuSO4 solutions, for example, ferrous sulphate and copper are produced as by-products.

4 What is the concept of decomposition and combination reaction in the NCERT Solutions for Class 10 Science Chapter 1?

Ans. The reaction between two or more molecules to form a larger molecule is called a combination reaction whereas the splitting up of larger molecules into two or more smaller molecules is called the decomposition reaction. To understand these concepts in a better way, students are recommended to refer to the chapter-wise solutions created by the subject matter experts at Adda247. The solutions are prepared after conducting vast research on each concept to boost the term wise exam preparation of students.

5 Why do we paint materials made up of iron?

Ans. Materials made of iron are painted to prevent the surface of the material from coming in contact with moisture in the air. This prevents the materials from rusting.

6 Why do copper sulphate solution changes colour when an iron nail is dipped in it?

Ans. Iron is more reactive than copper and thus, it displaces copper from the copper sulphate solution. This changes the colour of the copper sulphate solution.

NCERT Solutions for Class 10 Science Chapter 1 Exercise

Some of the important exercise questions for the chapter 1 of class 10 science subject (Chemical Reaction and Equations) is given below.

Q. What is a balanced chemical equation?

Solution: A chemical equation in which the number of elements present on the reactant side is equal to the product side is known as a balanced chemical equation.

Q. Why should a magnesium ribbon be cleaned before burning in the air?

Solution: Because magnesium metal combines with ambient oxygen to generate magnesium oxide (MgO) layer, a very stable chemical. Hence, the ribbon must be cleaned by removing the coating of MgO in order to stop more reactions with oxygen.

Q. Why do we paint Iron objects?

Solution: Paint prevents wrought iron objects from coming into contact with water or air and prevents rusting damage. It increases the longevity of the iron.