What do you undestand by exothermic reaction and endothermic reaction? Give one example of each type.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Exothermic Reaction:**
An exothermic reaction is a type of chemical reaction that releases energy into the surroundings. This energy is typically released in the form of heat, light, or sound.

2. **Example of Exothermic Reaction:**
A common example of an exothermic reaction is the combustion of carbon. When carbon (C) reacts with oxygen (O₂), it forms carbon dioxide (CO₂) and releases heat. The reaction can be represented as:
\[ C + O_2 \rightarrow CO_2 + \text{Heat} \]

3. **Definition of Endothermic Reaction:**
An endothermic reaction is a type of chemical reaction that absorbs energy from the surroundings. This energy is required for the reaction to proceed, and it is usually absorbed in the form of heat.

4. **Example of Endothermic Reaction:**
A well-known example of an endothermic reaction is the formation of nitrogen monoxide (NO) from nitrogen (N₂) and oxygen (O₂). This reaction requires heat to occur and can be represented as:
\[ N_2 + O_2 + \text{Heat} \rightarrow 2NO \]

5. **Summary:**
- Exothermic reactions release energy (e.g., combustion of carbon).
- Endothermic reactions absorb energy (e.g., formation of nitrogen monoxide).

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