MHSB - 8 - Science :: Chemical reactions and their types

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MSCERT-Science-Grade 8

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[Contributor - Anu Nived]


Objective: To teach the students about various chemical reactions

Subtopics to be covered:

- Types of chemical reactions-> combination, decomposition, displacement

- Oxidation and reduction reactions

- Exothermic and Endothermic reaction

- Speed of chemical reactions, use of catalyst

Learning Outcome:

- Students know about various types of chemical reactions and catalysts

- They know how to write chemical equations.


[Contributor - Kripa S]


https://www.youtube.com/watch?v=DEdRcfyYnSQ (bond formation)

https://www.youtube.com/watch?v=4jISjQvdyhs (balancing chemical reaction)

https://www.youtube.com/watch?v=NaGQ9VI5mwg (redox reaction)

https://www.youtube.com/watch?v=DVGaNxEM7M8 (decomposition reaction)

https://www.youtube.com/watch?v=LkAykOv1foc (covalent bond)

https://www.youtube.com/watch?v=p1Z9bUhA7G8 (Chemical reaction and their types - Marathi)


[Contributor - Kripa S]


1. Take little quicklime and add in a small glass of water. You will feel the glass turning warm. In this reaction, energy is generated.

2. Take little glucose powder and add in a small glass of water. You will feel the glass turning cool. In this reaction, energy is consumed.


[Contributor - Aditi Joglekar]

Term Transliterated Term Translated Term
Chemical reaction केमिकल रिऍक्शन रासायनिक अभिक्रिया
Reactant रिऍक्टन्ट अभिक्रियाकारक
Product प्रॉडक्ट उत्पादित
Equation इक्वेशन समीकरण
Combination (reaction) कॉम्बिनेशन (रिऍक्शन) संयोग (अभिक्रिया)
Decomposition (reaction) डिकंपोझिशन (रिऍक्शन) अपघटन (अभिक्रिया)
Dissociation (reaction) डिसोसिएशन (रिऍक्शन) अपघटन (अभिक्रिया)
Displacement (reaction) डिस्प्लेसमेंट (रिऍक्शन) विस्थापन (अभिक्रिया)
Oxidation ऑक्सिडेशन ऑक्सिडीकरण
Reduction रिइक्शन क्षपण
Catalyst कॅटॅलीस्ट उत्प्रेरक
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