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