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Types of Chemical Reactions – Combination and Decomposition Video Lecture - Class 10

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FAQs on Types of Chemical Reactions – Combination and Decomposition Video Lecture - Class 10

1. What is a combination chemical reaction?
Ans. Combination chemical reaction is a type of reaction where two or more substances combine to form a new substance. It is also known as a synthesis reaction. An example of a combination reaction is the reaction between iron and sulfur to form iron sulfide (FeS).
2. What is a decomposition chemical reaction?
Ans. Decomposition chemical reaction is a type of reaction where a single compound breaks down into two or more simpler substances. It is the opposite of a combination reaction. An example of a decomposition reaction is the breakdown of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2).
3. What are some examples of combination reactions?
Ans. Some examples of combination reactions include the reaction between magnesium and oxygen to form magnesium oxide (2Mg + O2 → 2MgO) and the reaction between hydrogen and chlorine to form hydrogen chloride (H2 + Cl2 → 2HCl).
4. Can you provide an example of a decomposition reaction?
Ans. Yes, an example of a decomposition reaction is the reaction of calcium carbonate (CaCO3) to form calcium oxide (CaO) and carbon dioxide (CO2) gas. The reaction can be represented as: CaCO3 → CaO + CO2.
5. What are the key differences between combination and decomposition reactions?
Ans. The key difference between combination and decomposition reactions is that combination reactions involve the formation of a new compound from two or more substances, while decomposition reactions involve the breakdown of a compound into simpler substances. Combination reactions are also known as synthesis reactions, while decomposition reactions are the opposite of synthesis reactions.
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