Class 10 Science Study Guide: CBSE Class 10 Science Chemical Reactions And Equations
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CHEMICAL REACTIONS AND EQUATIONS
1. During chemical reactions, chemical composition of substances changes or new substances are formed.
2.Chemical reactions can be written in chemical equation form which should be always balanced.
3. Types of Chemical Reactions
4. i)Exothermic reaction: A chemical reaction in which heat energy is evolved.
C + O2 →CO2 (g) + heat
ii)Endothermic reaction: A chemical reaction in which heat energy is absorbed.
ZnCO3 + Heat →ZnO + CO2
5 .Redox reaction: Chemical reaction in which both oxidation and reduction take place simultaneously.
Oxidation: Reaction that involves the gain of oxygen or loss of hydrogen.
Reduction: Reaction that shows the loss of oxygen or gain of hydrogen
ZnO + C →Zn + CO
ZnO is reduced to Zn -reduction
C is oxidized to CO ------oxidation
6. Effectsof oxidation reactions in our daily life:
a)Corrosion: It is an undesirable change that occurs in metals, when they are attacked by moisture, air, acids and bases.
Corrosion (rusting) of iron: Fe2O3. xH2O (Hydrated iron oxide)
Corrosion of copper:CuCO3.Cu (OH)2 (Basic copper carbonate)
Corrosion of silver:Ag2S (Silver sulphide)
Corrosion of Aluminum: Al2O3 (Aluminum oxide)
b)Rancidity: Undesirable change that takes place in oil containing food items due to the oxidation of fatty acids.
Preventive methods
(1)Adding antioxidants to the food materials.
(2) Storing food in air tight container
(3) Flushing out air with nitrogen gas.
(4) Refrigeration
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CBSE Class 10 Science Study Material: Chapter 1 Chemical Reactions and Equations
Comprehensive Study Resources for Chapter 1 Chemical Reactions and Equations
Review targeted study resources for Chapter 1 Chemical Reactions and Equations tailored for Class 10 learners. Utilizing these structured notes and quick-revision tools ensures complete alignment with current CBSE evaluation standards.
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Built using official NCERT guidelines for Class 10 Science, these materials provide reliable academic support. Integrating past examination questions and step-by-step solutions helps students understand official CBSE grading criteria.
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Our advanced study package for Chapter 1 Chemical Reactions and Equations includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 10 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Chapter 1 Chemical Reactions and Equations act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 10 Science resources for lesson planning as they are in simple language and have lot of solved examples.
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