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Selina solutions for Concise Chemistry Class 7 ICSE Chapter 5 Language of Chemistry Exercise Exercise | Q 1.1 Define chemical reaction. Exercise | Q 1.2 What is a chemical equation? Exercise | Q 1.3 Why do we need to balance chemical equations? Exercise | Q 2 State four conditions necessary for chemical reactions to take place. Exercise | Q 3.1


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Question 1. (a) Define chemical reaction. (b) What is a chemical equation? (c) Why do we need to balance chemical equations? Answer: (a) Chemical reaction : Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction.


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Question 1 (a) Define a chemical reaction. (b) What is a chemical equation? (c) Why do we need to balance chemical equations? Answer (a) Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction.


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Selina Concise Class 7 Chemistry Solution Chapter No. 5- 'Language of Chemistry' For ICSE Board Students. 1) a) Answer : Chemical reaction : A compound or molecules (Reactant) chemically react with each other and form one or more new different compound or substance ( product) are known as chemical reaction. b)


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Question 1. Explain the term 'chemical reaction' with special reference to - 'reactants' and 'products'. Answer 1: A reaction between matter that react together and form new products. The substances that undergo reaction are reactants while the new substances formed are called products. Question 2.


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Answer A chemical reaction involves the breaking of existing bonds between atoms or groups of atoms of the reactants and leading to formation of new bonds forming new substances called the products. Question 2 Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation.


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July 6, 2019 by Laxmi Selina Concise Chemistry Class 7 ICSE Solutions Chapter 5 Language of Chemistry includes all the important topics with detailed explanation that aims to help students to understand the concepts better.


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Question 1. (a) Define chemical reaction. (b) What is a chemical equation? (c) Why do we need to balance chemical equations? Answer: (a) Chemical reaction : Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction.


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